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Voilamart eBike Conversion Kit Review

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The Voilamart ebike conversion kit – is it any good?

Voilamart are a global Chinese online retailer that sell everything from domestic appliances through to Beauty products. They also happen to sell budget ebike conversion kits. But just because they’re cheap doesn’t necessarily mean they aren’t any good.

The Voilamart 1000w ebike conversion kit represents excellent value for money, in this review I will go over the pros and cons, based on my own experience installing over 50 of these kits in the last 3 years.

What’s included in the Kit?

There are front and rear wheel kits available and a LCD display option. These kits contain almost everything you need to convert your bike to electric, apart from a battery.

voilamart 1000w 48v ebike conversion kit rear wheel

Voilamart rear wheel 48v 1000w ebike conversion kit (without LCD display)

  • 48v 1000w Rear wheel direct drive hub motor laced into a 26″ double-walled alloy rim with heavy-duty spokes
  • 48v 26A Motor controller
  • Controller Bag
  • Pedal assist sensor
  • Throttle with battery indicator display
  • Brake levers with cut-off sensors (for cable brakes only)
  • 7-Speed gear freewheel
  • 26″ x 1.75″ Mountain bike tire
  • Cable ties
  • Plastic wiring coil (for tidying up the cables)
  • Installation manual

Voilamart rear wheel 48v 1000w ebike conversion kit with LCD display

  • 48v 1000w Rear wheel direct drive hub motor laced into a 26″ double-walled alloy rim with heavy-duty spokes
  • 48v 26A motor controller
  • SW900 LCD Display
  • Controller Bag
  • Pedal assist sensor
  • Twist Throttle
  • Brake levers with cut-off sensors (for cable brakes only)
  • 7-Speed gear freewheel
  • 26″ x 1.75″ mountain bike tire
  • Cable ties
  • Plastic wiring coil (for tidying up the cables)
  • Installation manual

 

Motor Specification

The Voilamart kit uses a simple brushless DC direct drive hub motor. Direct drive motors have been around for years, and the principle is based on tried and tested technology. This kind of ebike motor may have seemed high-tech 20 years ago, but it is now considered old-hat when it comes to electric bike motors.

a voilamart 1000w ebike conversion kit fitted to a mountain bike

One benefit of direct drive hub motors, is they are cheap to manufacture, and fairly reliable. They do not have any internal moving parts (like geared hub motors) and they can generally handle quite a lot of power.

I have successfully run a 1000w Voilamart hub motor on a 45A controller with a 52v battery – producing over 2000w of peak power, with no reliability issues.

Legality

If you are in the UK, EU or Australia then the maximum continuous power output for an electric bicycle is 250w, with a speed limit of 15.5mph (25km/h) anything above that would be classed as a moped and subject to the same rules and regulations. You would only legally be able to ride your bike on private land.

This motor is rated at 1000w and is not speed limited. There is a plug on the controller, that when connected limits the output to 250w and speed to 15.5mph. I have looked into the law and it states quite clearly that the motor has to be ‘rated’ at 250w continuous.

US federal law is different and allows 750w and 20mph, so technically this motor would still be illegal there.

I’m not one for rules and regulations, but you need to be made aware of the potential legal implications before you purchase and install on of these kits.

Reliability

I have installed at least 50 of these kits over the last 3 years, and I have only ever had a couple of long-term issues reported off customers. Hall sensor failure has occurred on maybe 3 or 4 units, and I have had one controller failure, and one LCD display pack up.

Another issue you will encounter is broken spokes. If you here a ‘clicking’ sound when riding, you will need to check the spokes for tightness. If you need to replace a broken spoke, you will need the correct length and gauge. I would recommend buying a pack of spokes and a wheel truing stand, for ongoing maintenance.

bicycle wheel truing stand

Thankfully, because these kits are so cheap, so are the replacement components. The hall sensors can be replaced, if your are good with a soldering iron. The motor controller costs around £30 ($40) and the SW900 LCD display can be purchased off Aliexpress for about $50.

In my experience, Voilamart are quite helpful when it comes to warranty claims. The only issue being, the replacement part is usually sent from China, so delivery may take a little while.

What types of bike are best suited?

I would personally go for an old ChroMo steel mountain bike, or cruiser. Steel bends, alloy breaks! All older mountain bikes and cruisers have 26″ wheels. It would be advised to upgrade the brakes if possible, as these kits add a lot of weight to a bike once fitted.

A Vintage mountain bike fitted with a 1000w rear wheel ebike conversion kit

Installation and Compatibility

The Voilamart electric bike kit is only available in a 26″ wheel version, to my knowledge they do not supply any other size. This is probably to keep costs down and simplify things.

If your bike has disc brakes fitted, you could get away with fitting a smaller 26″ rear wheel to say, a 27.5″ wheeled mountain bike. I have done it before, without any negative impact on handling. This wouldn’t work with v-brakes, as the drop on the brake calipers would not reach the braking surface on the rim.

CHECK PRICE ON EBAY

The motor axle can sometimes be a tight squeeze to get into the dropouts. On occasion you may need to file the dropouts slightly to accommodate the larger axle.

Although the specification states that the kit is suitable for 135mm rear dropouts, you will nearly always have to pull them apart slightly to get the axle to fit in. You will also need to use the spacers provided, otherwise the rear brake caliper will rub on the motor hub casing.

Torque arm kit for electric bike hub motor

When you are indexing the rear gear shifting, you will need to set the ‘low’ limit screw on the rear derailleur, otherwise it will rub on the motor casing when in 1st gear (largest cog on the rear freewheel).

If you have hydraulic brakes, the brake levers supplied will not be compatible, so you will either need to purchase separate cut-off sensors or not bother at all. On a motor with this kind of power output, it would be wise to purchase the sensors (especially if you are using a throttle).

I would not recommend the front motor if you have disc brakes,  I have fitted a few of the front hub motors and the brake caliper nearly always rubs on the motor, regardless of adjustment.

This kit does not come with a torque-arm. I would highly recommend purchasing one of these, as it will prevent the motor axle from popping out of the dropouts. Something you definitely don’t want happening at speed!

Performance

When installed properly, these kits will turn your humble bicycle into quite a fast electric bike. I have recorded speeds of around 30mph on the flat (without pedalling). At the very least you will need a good 48v or 52v battery with a minimum continuous current rating of 30A – the controller will draw a maximum of 26A.

voilamart 48v 26a motor controller with wiring diagram

Another thing to consider is battery range. A direct drive hub motor is the least energy efficient electric bike motor, so you will not get a particularly good range out of something like a 48v 10.4Ah battery, unless you are really frugal with the power, and pedal a lot.

A good starting point for a battery would be a 48v 17.5Ah battery with a 30A BMS. This is going to be the most expensive part of the conversion. Of course, if you are only planning on using your bike for relatively short journeys then a 10Ah battery should be fine.

What if I run out of battery power?

Good luck pedalling! Direct drive hub motors are not only heavy, but you have the resistance of the motor to overcome. Pedalling one of these with the power off (particularly uphill) can be quite a challenge. I know, I’ve been in that position before! If you want a motor you can pedal comfortably with the electric assist off, then I would recommend a geared Bafang hub motor.

Conclusion

If you want to build a fast electric bike on a budget, then the Voilamart kit offers excellent value for money. It’s a simple, low-tech solution to building your own ebike. The motor is heavy and inefficient, but it will provide you with enough power to put a smile on your face, and it will get you up most hills with ease.

Factor in the cost of a medium-sized 48v battery, and you can build your bike for less than the price of the cheapest Chinese ebike.

 

These kits are generally reliable, more so than the more expensive Bafang mid-drive motors. If they do go wrong, everything is fairly cheap and easy to replace. You could even buy a second kit so you had a back-up of spare parts.

Just keep in mind the legal aspect. And most of all – ride safe! If you’re planning on using your creation on the road, try and keep your speed down in built-up areas, and always ghost pedal. That way you won’t draw any unwanted attention to yourself.

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Voilamart 1000w 48v ebike conversion kit

7

Value for Money

10.0/10

Performance

8.0/10

Efficiency

3.0/10

Pros

  • Excellent Value for Money
  • More than enough power
  • Fairly straightforward installation

Cons

  • Heavy
  • Inefficient
  • Antiquated

135 thoughts on “Voilamart eBike Conversion Kit Review

  • October 22, 2020 at 4:37 pm
    Permalink

    Hi, I have just purchased the Voilamart 1000W, 48V, FRONT ebike wheel (which is due to arrive next week), but I understand that it does NOT come with the SW-900 LCD screen or any other type of similar display. I have therefore sent off for an SW-900 and am now told by the seller that I need to change both the throttle and the controller, as especially the current controller does not have an LCD connector. The seller has recommended the required controller, but they have sold out of it, and I simply cannot find it anywhere else. Can anyone help in this matter, and let me know where I may purchase the correct LCD Controller for a Voilamart 1000W, 48V, FRONT ebike wheel with an SW-900 LCD device? Many thanks in advance. Cheers. Stephen

    Reply
    • October 22, 2020 at 7:33 pm
      Permalink

      Hi Stephen,

      I’ve got a box of controllers in my workshop (mainly KT series which aren’t compatible with the SW900). I’ll have a look tomorrow to see if I have a spare Voilamart controller knocking about and let you know.

      Cheers,
      Tony

      Reply
      • October 24, 2020 at 12:37 pm
        Permalink

        Hi Tony,

        Thank you so much for you advice. Your offer is appreciated. I too have four separate controllers, one of which is also a KT controller, but I am aware that none of them are really suitable for the SW-900 LCD. If you do find an appropriate controller in your stock, I would certainly be interested, so please do keep me informed about this.

        Kind regards,

        Stephen

        Reply
        • October 24, 2020 at 2:29 pm
          Permalink

          Hi Stephen,

          I had a look this morning and only have KT series controllers left. The only other place I can suggest trying is Aliexpress – I find most things turn up within a couple of weeks when ordered direct from China.

          All the best,
          Tony

          Reply
          • October 24, 2020 at 3:04 pm
            Permalink

            Hi Tony,

            That’s no problem, but thank you for having a look anyway. You will be glad to learn that I have just ordered the necessary controller and throttle direct from Voilamart, and I should receive my parcel from China in around 14 days time from the date of this message. Unfortunately, I ordered my SW-900 LCD from the same seller of the whole e-bike wheel on Ebay, and that is not due to turn up until two or three weeks into November of this year, so I shall have to wait for that. However, I should be able to build up my existing bike at a little slower, but more pleasant, pace than it would normally take, so it might not be too bad.

            Anyway, thanks again, and best regards.

            Stephen

          • October 24, 2020 at 7:21 pm
            Permalink

            You’re welcome, glad you’ve managed to get a controller sorted.

            Cheers,
            Tony

  • September 28, 2020 at 2:12 pm
    Permalink

    Value for Money

    8

    Performance

    9

    Efficiency

    7

    hi Tony

    I have the 1000W Voilamart kit. I built an ebike during lockdown and its great. I Used to be well into bikes in my younger days and a few mates have been banging on about the ebike revolution so I thought I would build one. The bike has turned out brilliant and I’m well pleased with it. There is a problem I cant figure out though so if you could help it would be great. I have the SW900 display. All seems OK except I have no PAS. I have been into the settings P10 and as far as i can work out a zero is PAS only, a 1 is throttle only, and a 2 is both PAS and throttle. Whatever setting I choose I’m not getting any PAS. Even if I choose setting 1 I can still use the throttle, whatever setting I choose I can only use throttle, Is there a way to factory reset? or have you any advice what I should do as I really want to use PAS also, Any help would be much appreciated, PS. I’m using a 52V 17.5Ah BMS30A battery. Thanks, Neil

    Reply
    • September 28, 2020 at 8:02 pm
      Permalink

      Hi Neil,

      I sounds like you might have a faulty PAS sensor, or the distance between the sensor and the magnetic disc is either too close or far. The Voilamart kit uses a standard 3-pin PAS sensor (with block connector) so you should be able to get a replacement from eBay or Amazon for about £10. Your battery configuration should work fine with the controller, I’ve used 52v batteries quite a few times in the past and they’ve never caused any issues.

      It might also be worth looking at the P11 (PAS sensitivity 1-24) and P12 (PAS start up strength 0-5)settings, as if these values are set too low PAS either won’t work or will take a while to kick in.

      I hope this info helps. If you have any more questions, let me know.

      Cheers,
      Tony

      Reply
      • September 28, 2020 at 8:45 pm
        Permalink

        Hi Tony

        Thanks for the quick reply. I should have said I have had to use a different PAS system as I have a hollowtech type crank setup. I have used the replacement type i have heard other ebikers using with success. The model is the BZ-10C 10 Magnet PAS Pedal Assist Sensor for Hollowtech Cranksets. It goes on the drive side and clips into the inner chain ring. It’s about 3-4mm from the sensor. I have heard on the net other biker’s are using this with SW900 without problems. Also, if there was no PAS sensor/magnets on the bike should the throttle still be working with the P10 setting set at zero? Thanks for your help and I will try the P11 and P12 you suggested tomorrow, Cheers, Neil

        Reply
        • September 29, 2020 at 3:24 pm
          Permalink

          Hi Neil,

          I have used those Hollowtech pedal sensors before on the Voilmart kit without any problems. Have you tried altered the P13 setting? This determines the number of magnets on the sensor ring. The throttle shouldn’t work if the P10 is set to zero, so I’m wondering if there is a possible problem with either the display or controller. It might be worth contacting the seller – I usually buy my kits direct from the Chinese company that sells them from eBay UK and they’ve always been quite helpful in the past.

          All the best,
          Tony

          Reply
      • October 18, 2020 at 7:35 pm
        Permalink

        Value for Money

        9

        Performance

        9

        Efficiency

        7

        Hi Tony
        This is such a helpful thread.
        I am currently running 1000w rear hub with standard voilamart controller, SW900 display, and 48v 17.5 ah (30v continuous Panasonic cells) battery.
        Looking at increasing power and torque a bit with your recommended KT controller 45a (18 mofset) .
        Will this controller work with the SW900 and you mention in a previous post about matching the controller to the motor, is this straightforward?
        Finally is it worth doing for the potential power increase.

        Many thanks.

        Mark

        Reply
        • October 18, 2020 at 9:17 pm
          Permalink

          Hi Mark,

          You will need to buy a KT-LCD3 display as I’ve never been able to get the SW900 to work properly with a KT controller.

          As far as performance gains are concerned, you should see better acceleration and it will hold speed better on hills. You won’t see much of a gain in top speed though.

          I hope this helps, if you have any more questions, let me know.

          Cheers,
          Tony

          Reply
          • October 19, 2020 at 8:25 am
            Permalink

            Value for Money

            9

            Performance

            9

            Efficiency

            7

            Thanks Tony.
            I was just concerned about the fact you mention matching the controller to the motor, is this a simple task or is it just plug and play.

            Many thanks.

            Mark

          • October 20, 2020 at 7:13 am
            Permalink

            Hi Mark,

            You will need to configure the KT-LCD3 display parameters to account for the number of magnets on the PAS sensor disc and motor. There is a detailed thread on endless-sphere.com on what each setting does and how to set the display up.

            Regards,
            Tony

          • October 26, 2020 at 9:23 pm
            Permalink

            Value for Money

            9

            Performance

            8.5

            Efficiency

            7

            Hi Tony
            Am I ok with the KT 1500w 45a controller with my set up 1000w motor and battery is 48v 17.5ah 30a BMS.
            If so any ideas on where to get one with LCD-3 Ali quoting December delivery.

            Thanks for all the advice.

            Regards.

            Mark

          • October 27, 2020 at 10:08 am
            Permalink

            Hi Mark,

            There is a guy on eBay from Wiltshire who has the KT-LCD3 in stock. I’ve purchased various e-bike parts from him before and he usually sends next day delivery. Here is the link.

            Cheers,
            Tony

  • September 27, 2020 at 5:41 pm
    Permalink

    Hi Tony
    I have this kit, but the 500w version. Excellent value for money – I bought it for £120 a few months ago. I’m keen to keep as close to legal as I possibly can, so initially disconnected the throttle by fitting a keyed switch, but found that in restricted ‘legal’ mode it isn’t powerful enough on hills for a 65 year old overweight bloke with arthritic knees. In unrestricted mode, it’s too powerful on the flat, as it zooms me along at 23mph, but is perfect on hills. I bought this kit –
    MAGT Scooter Controller Kit,… https://www.amazon.co.uk/dp/B082FLWYRW?ref=ppx_pop_mob_ap_share
    on Amazon in the hope that I could control the power better. It works very well in many ways, but if I try to restrict the top speed to 15.5mph by programming setting 8 to 25 kph, the motor doesn’t seem to work at all. If I set it to 75kph, it seems to restrict the power so that it won’t go much above 15mph, but it seems to do that by restricting the power the motor can draw which means it’s not so good on hills again. Setting 14, which is supposed to restrict the power, doesn’t seem to do anything at all.
    In short, am I doing something daft – connected something wrong? – or am I trying to achieve the impossible by wanting to restrict the top speed whilst keeping more power?
    Many thanks!
    Derek

    Reply
    • September 27, 2020 at 9:49 pm
      Permalink

      Hi Derek,

      Unfortunately I don’t have any experience with that display / controller configuration. I usually use the SW900 display (with the Voilamart kit) or the KT-3LCD display / controller combination.

      I did a little searching and the best I could come up with was a YouTube video which shows how to change the ‘PO’ parameters on the S866 display. The only possibility could be the setting for the number of magnets (in the motor). It might be worth checking that setting – if you message Voilamart directly they should be able to tell you how many magnets your particular motor has. Here is a link to the video.

      All the best,
      Tony

      Reply
      • September 28, 2020 at 7:28 am
        Permalink

        Hi Tony

        Many thanks! I’ll certainly try that.

        I’ve tried several different values for the magnet setting, including 46 as mentioned by Ed in the post below, but no joy so far. I think 46 must be about right, as the speedo seems to be correct without needing to adjust the display speed ratio, which I need to do with other settings of the magnet number.

        I’ll see what Voilamart say, but failing that the SW900 or KT-3LCD controller combination may be the way to go. Which would you recommend for a 500w rear hub/36v 15Ah battery set up please?

        Thanks again!

        Derek

        Reply
        • September 28, 2020 at 7:49 pm
          Permalink

          Hi Derek,

          For a 36 volt set-up I would recommend the 36v25A KT series controller with a KT-LCD3 display – In my experience the KT controllers are generally reliable and the display allows for certain settings to be fine-tuned (including pedal assist). There is also the possibility of configuring the controller directly using open source software – here is a link to a useful thread on endless-sphere.com regarding this.

          I couldn’t find any UK suppliers selling this controller / display combo, but here is a link to one on Aliexpress from a reputable vendor.

          Regards,
          Tony

          Reply
          • September 28, 2020 at 8:35 pm
            Permalink

            Hi Tony

            Many thanks!

            All the best.

            Derek

          • September 29, 2020 at 3:09 pm
            Permalink

            You’re welcome 👍

  • September 18, 2020 at 12:56 am
    Permalink

    Value for Money

    1

    Performance

    0

    Efficiency

    0

    Ok hi all I have 2 questions Voilamart Electric Bicycle 26″ Bike 36V 500W Front Wheel Motor Conversion Hub Kit Cyclingone is can someone tell me what is Number of Speed Magnets. and how many is there…EBike Controller with LCD Display Speed Controller…
    2 I have a 500 watts hub can I use 750 watt or 1000 watt controller instead of a 500 watt controller

    Reply
    • September 21, 2020 at 1:22 am
      Permalink

      I found out about speed magnets this has 46 magnet
      I also found out about the controller You go down but not up
      so I answer my own question thank you anyway

      Reply
  • September 6, 2020 at 10:34 am
    Permalink

    What sort of range will I get out of a 10.4 Ahr battery? I only need to do a 6 km round trip and half of it is downhill so I don’t think I will need the full current flow for that part.

    Also, does any bike battery socket fit any conversion kit or is there no ‘standard’ socket?

    Reply
    • September 6, 2020 at 1:33 pm
      Permalink

      Hi Daniel,

      A 48v 10.4Ah battery being used in conjunction with the 1000w kit, will give a range of around 15-20 km if full assist is used. You should be able to achieve up to about 40 km if you use the lowest assist level.

      Most Voilamart controllers have a positive (red) and negative (black) battery connector wire with male and female bullet connectors. If your battery has different connectors you may need to change them. Make sure the battery is switched off when you do this.

      Reply
  • September 1, 2020 at 9:08 pm
    Permalink

    Hi Tony,

    Question; regarding your choice for a good KT series controller for 52v 1500 watts, there seems to be many choices of brands for controllers. Do you have any advice on brands to stay away from or brands to look for?

    and will the KT-LCD3 and KT-LCD5 work the same on these controllers.

    Thanks so much for all your input and support

    Reply
    • September 2, 2020 at 10:45 am
      Permalink

      Hi Robert,

      I’ve always purchased my 1500w KT controllers from Pasion ebike on Aliexpress, they usually deliver within a couple of weeks. They do the 48v 45A option with the LCD3 or LCD8 (color) displays, although the LCD5 will also work fine with the KT controller. I have a friend who uses one of these controllers with a 52v 24Ah triangle battery with 50A BMS and MXUS 3K motor – his motor puts out 2000w continuous without any issues.

      Cheers,
      Tony

      Reply
  • September 1, 2020 at 1:44 pm
    Permalink

    Hi Tony – I purchased a used rear wheel kit 1000W kit and am missing the speed sensor that mounts on the front wheel. Do you know if they are a standard item? And where I can purchase one?

    thanks for the article.

    Reply
    • September 1, 2020 at 4:36 pm
      Permalink

      Hi Rob,

      I’ve never come across a Voilamart kit that uses an external speed sensor. Usually the controller measures the speed internally (in the hub motor). If your controller needs an external speed sensor, they can be purchased through Aliexpress. I did have a look on Amazon, but couldn’t find any. Here is a link for one on Aliexpress that should be compatible with a 3-pin female connector (on the controller).

      Glad you like the article. If you have any more questions, please let me know.

      All the best,
      Tony

      Reply
  • September 1, 2020 at 11:55 am
    Permalink

    Is there an actual difference between Voilamart 1000w and 1500w motors? Because from the outside they look identical.

    Reply
    • September 1, 2020 at 4:28 pm
      Permalink

      Personally, I don’t think there’s any difference with the motor (apart from the 1500w version with the integrated controller). The only difference seems to be the controller – 26A for the 1000w and 35A for the 1500w. I’ve used a 1000w Voilamart rear hub motor with a 48v 45A KT controller and KT-LCD3 display with a 52v 20Ah battery (with 50A BMS) and had 2000w peak power – no long-term reliability issues either. The top speed doesn’t change much, but acceleration and ability to maintain speed on hills is improved with the 1500w version.

      Reply
  • August 26, 2020 at 2:38 pm
    Permalink

    Value for Money

    7

    Performance

    7

    Efficiency

    1

    Hello, One more try…

    A 1500w kit with no LCD display, using as a PAS system only.

    Are there any hacks to deal with the PAS sensitivity without using an LCD setup?

    Thanks

    Reply
    • August 26, 2020 at 8:29 pm
      Permalink

      Hi Robert,

      Not something I’ve got any experience with as I have always fitted an LCD display. The only way around it that I can see would be to get a KT controller and try programming it using the open source firmware. But in reality getting an SW900 or KT-LCD3 display would be a lot more straightforward.

      Regards,
      Tony

      Reply
      • August 28, 2020 at 2:16 pm
        Permalink

        Hi Tony,

        A SW900 display is on the way, the controller has a 5 wire plug for it.

        When I get some extra funds I think I will get the KT setup, regen brakes is a big plus I would think.

        Thanks again

        Reply
        • August 28, 2020 at 7:19 pm
          Permalink

          Hi Robert,

          Thanks for the update, let me know how it goes.

          Cheers,
          Tony

          Reply
          • September 1, 2020 at 12:40 am
            Permalink

            Well I fubar’d it now..
            The Voilamart controller has a 6 pin plug for the throttle/power
            red/black/white/green/brown/yellow
            The SW900 has the 5 pin plug
            red/blue/black/green/yellow
            I tried jumping the following to matching on each plug
            red/black/green/yellow
            but no joy…
            Looks like saving up for the KT system (want the regen anyway)

          • September 1, 2020 at 9:26 am
            Permalink

            Hi Robert,

            The color coding on Chinese e-bike controllers is very confusing, as different manufacturers use different colors across components. I think I’ve got a spare 1000w Voilamart controller here (with the correct connectors) but I’m in the UK, so postage will probably be pricey. If you decide to go down the route of a KT controller, you will also need to get the KT-LCD3 display as for some reason I could never get the SW900 to work properly with a KT controller.

  • August 21, 2020 at 8:29 pm
    Permalink

    Value for Money

    10

    Performance

    10

    Efficiency

    5

    Hi Tony, Great information, thanks for sharing it all with us.

    I just ordered an amazon 1500w kit (no LCD) and a 52v 13ah battery 30amp bmc. Based on some of your info. After reading through the comments though I’m wondering what the best direction to go with it all now is. The kit I ordered does not come with LCD and only has a battery gauge throttle. The plan was to not use the throttle or brake levers and run it as pure PAS, it sounds in the comments like it will be quite a handful without any PAS adjustment (26″ GT Avalanche mtb hardtail).

    Any suggestions? already looking at the KT-LCD3 or the SW900 but assuming that a new controller would be required as well since mine has no plug in for a display only the throttle plug.

    Thanks for any thoughts on it.

    Reply
    • August 21, 2020 at 11:07 pm
      Permalink

      Hi Robert,

      I would check how many pins are on the throttle connector, if it is a 5-pin connector then an SW900 display should work.

      If you don’t have the 5-pin connector it would be worth getting the KT-LCD3 display and matching KT controller – I have two brand new 48v 45A KT controllers available, but I’m in the UK so it would be better getting one stateside if possible. In my experience the KT controller is more reliable in the long-term and I believe you can also modify the firmware – here is a link to a good thread on endless-sphere regarding this.

      I hope this helps, if you need any more advice, let me know.

      Cheers,
      Tony

      Reply
      • August 22, 2020 at 4:23 pm
        Permalink

        Hi Tony , sorry if this is the wrong place but i wasn’t sure how to ask you a question . I ve just bought a Voilamart 36v 500w rear hub kit , when i switch it on the 3 lights on the thumb throttle light up but the wheel only turns for about half a second then stops and wont move gain until i switch off the power then on again and it only moves in the first second after switching on the power . If i wait for more than a second after switching on the power nothing happens at all , i’ve checked the battery voltage at the controller while doing this and it stays at 36.2v and i’ve double checked all connections which all appear to be good . Have you had this issue before or can you suggest what i could try to sort this out ? Thanks ,Brett.

        Reply
        • August 22, 2020 at 6:13 pm
          Permalink

          Hi Brett,

          It sounds to me like it could be one of the hall sensors inside the motor. If you’ve just brought the motor, I would try and return it as faulty. Replacing the hall sensors can be a bit fiddly and requires soldering skills. The hall sensors themselves are cheap and you can get them from RS components. Another possibility may be the battery – those controllers usually require a continuous output of around 20A, most 36v ebike batteries are rated to at least 20A continuous, but some are less.

          Let me know if you need any more info.

          All the best,
          Tony

          Reply
      • August 26, 2020 at 2:44 pm
        Permalink

        Thank you so much for the info..
        Love to mod firmware so that will be one direction I’ll definitely be checking out..

        Thanks again for all the help and knowledge sharing….

        Reply
        • August 26, 2020 at 8:30 pm
          Permalink

          You’re welcome – If I can find out any more info regarding modifying the controller firmware I will post them up here.

          Cheers,
          Tony

          Reply
      • August 28, 2020 at 9:29 pm
        Permalink

        Value for Money

        9

        Performance

        9

        Efficiency

        7

        Hi Tony
        I have a 1000w voilamart kit with pas and twist throttle incorporating a small useless display.
        I wanted to change to thumb throttle (3 wire) and then add a sw900 lcd. Can this be fitted using th existing plug to twist throttle and if so how does a thumb throttle wire in .
        Thanks.
        Mark

        Reply
        • August 29, 2020 at 4:59 pm
          Permalink

          Hi Mark,

          It depends on the type of controller you have. If you have the separate 5-pin and 3-pin connector (on the controller) then you can fit the SW900 display and a thumb throttle. If you don’t have the spare 5-pin connector you will need another controller, if you contact Voilamart directly they should be able to supply a controller an SW900 display together. The other option would be to get a KT controller with LCD3 display – although the KT-LCD3 display needs to be configured to work with the motor. There should be a link in the comments below to a thread on Endless-Sphere.com on how to do this.

          If you have any more questions, let me know.

          Cheers,
          Tony

          Reply
      • September 8, 2020 at 1:33 am
        Permalink

        Hi Tony I also have a 48v 1000w 26×4 fat bike kit with a 52v /20amp triangle battery would like to know what to set my sw900 display #p14 current limit of controller at its been bugging me for a while. Thanks

        Reply
        • September 8, 2020 at 5:39 pm
          Permalink

          Hi Douglas,

          The P14 current limit is usually set at 12A by default on most 1000w kits (using the SW900). There doesn’t seem to be a correlation between the controller current rating (usually around 26A) and what’s on the display. The values on the SW900 display P14 setting with 1000w Voilamart controller are usually 1-20. I’ve experimented with this setting and never noticed any difference in performance. Most of the conversions I’ve done have used a 52v battery with 30A BMS. There is a thread over on endless-sphere relating to this setting, but I couldn’t find a definitive answer. On the ebikeling website it states that on the latest SW900 displays the P14 setting is adjusted automatically.

          All the best,
          Tony

          Reply
  • August 19, 2020 at 10:09 am
    Permalink

    Dear Tony and others,

    First, I would like to apology for jumping into your discussion with an unrelated question. I just don’t know how to start a new one despite having spent some time to figure out.

    Well, Tony, I have installed a Bafang BBS01, and ordered a mini display SW102. The SW102 has finally arrived after after 4-5 months! If you are familiar with this, Tony, how can I use the bluetooth to communicate with my smartphone. It just doesn’t appear at all at the mini display.

    Many thanks in advance.

    Ninh

    Reply
    • August 19, 2020 at 6:46 pm
      Permalink

      Hi Ninh,

      I haven’t personally fitted the SW102 display before, but I did a bit of searching and it seems the display is ‘bluetooth ready’ but doesn’t have any software currently available. I found a tiny bit of information on a Reddit thread (link here) but all the other info seems to relate to the display being used with the Tongsheng TSDZ2.

      Sorry I couldn’t be more help with this one, maybe someone else has some suggestions.

      All the best,
      Tony

      Reply
      • August 20, 2020 at 9:57 am
        Permalink

        Many thanks, Tony. Ninh.

        Reply
      • August 20, 2020 at 10:07 am
        Permalink

        Your search effort is very much appreciated. Now I understand the problem. In fact, I don’t need the feature too much. The more features and information displayed, the more you are distracted. But … it is just human nature–things should work they way they are designed and marketed.

        By the way, would you please explain why there is a resistance when the speed is set to zero. I think the resistance is smaller when the unit is switched off. I was feeling it, but did not trust myself. I was guessing that I was too accustomed to being assisted.

        Reply
        • August 20, 2020 at 10:47 am
          Permalink

          Hi Ninh,

          Yes, there is usually some noticeable resistance when the motor is switched to zero. I find even with the motor switched off there is still some resistance but I personally don’t notice any difference in the resistance whether the motor is powered on or off.

          All the best,
          Tony

          Reply
  • August 18, 2020 at 1:22 am
    Permalink

    Hi Tony,

    I just purchased one of these kits in the front hub version and wanted to know if the stats of the battery below work on the 1000W hub?
    Description:

    POWER & ENERGY THE ELECTRIC ADVANTAGE
    * Rated Voltage: 48V
    * Nominal Voltage : 51.2V
    * Charge Voltage : 54.6V
    * Capacity (amp hours) : 10Ah
    * Peak Discharge Current : 25A
    * Continuous Discharge Current : 20A
    * Fit ebike: For 48V less than 700W ebike

    SIZE & WEIGHT ADVANTAGE
    * Size (L x W x H): 260*90*70mm/10.2*3.5*2.8inch
    * Weight: About 2.5KG/5.5lb

    TECHNOLOGY ADVANTAGE
    * Usable Capacity (AH): 10AH
    * Depth of Discharge : 100% DOD
    * Reserve Minutes @ 10A 60 min
    * Self Discharge <3% per month
    * Chemistry : Lithium Li-ion
    * Cell Type : 18650
    * Cell Combination : 13 Series and 4 Parallel

    SAFETY & PROTECTION ADVANTAGE
    * Built in Automatic Battery Protection System Internal
    * Automatic Low Voltage Disconnect : 35V
    * Automatic Short Circuit Protection Instant
    * Automatic Over Voltage Protection : 54.6V
    * Flame Retardant Electrolyte : Yes
    * Length Way Circuit Boards : Yes
    * Automatic Internal Cell Balancing : Yes
    * Explosion Proof Polymer Cells :Yes

    Specifications
    Battery Model

    48V 8Ah

    Nominal Voltage (V)

    48V

    Nominal Capacity (AH)

    8Ah

    Cell Combination

    4-parallel 13-series

    Cell Size

    18650

    Cell Quantity (parallel*series)

    52pcs

    Discharge Cutoff Voltage (V)

    36.4+/- 1V

    Charge Cutoff Voltage (V) 54.6V
    Rated Discharge Current (A)

    20A

    instantaneous Maximum Discharge Current (A)

    25A

    Maximum Continuous Discharge Current (A)

    20A

    Standard Charge Current (A)

    2A

    Charge Time under Standard Charge Current

    5hours

    Fast Charge Current (A)

    4A/5A

    Charge Time under Fast Charge Current

    2hours to 3hours

    Charge Temperature Range

    -20-55°C/-4-131°F

    Cell Size (L*W*T )

    260*90*70mm/10.2*3.5*2.8inch
    Battery Weight

    About 1.9KG/4.2lb

    Battery Power 700W(MAX)

    Features
    * Fully automatic built in battery protection system
    * Long life 1000 – 2000 cycles
    * Lightweight – up to 70% lighter than lead
    * No voltage sag – faster cranking for motors and higher voltage for continuous consistent power.
    * Dry Battery – no toxic lead or acid
    * Green ROHS compliant – No Lead
    * Does not heat up during use

    Reply
    • August 18, 2020 at 11:19 am
      Permalink

      Hi Ronnie,

      The continuous discharge current on the battery specification is 20A and the maximum current on the motor controller is 26A, so it may cause issues using at full power. It states the peak discharge current of the battery is 25A, so it’s possible it may work but it may trip the BMS causing the battery to shut down (in full power mode). I would go for a battery with at least a 25A continuous discharge current and a peak of 30A+ just to be on the safe side.

      Regards,
      Tony

      Reply
      • August 20, 2020 at 8:31 am
        Permalink

        Hi Tony,

        Thanks for info! Affordability is an issue for me to buy the preferred battery right now. In addition, I need to buy a battery stateside to make sure the kit I purchased function properly before the refund period is up. The shipping times for batteries from China is running about 8 to 10 weeks to the states, so I don’t have much of a choice. Would it work if I had two of those batteries and ran them in parallel?

        Thanks!

        Reply
        • August 20, 2020 at 7:24 pm
          Permalink

          Hi Ronnie,

          It might be worth checking out UPP on Aliexpress, they usually have quite a lot of stock in the States. I’ve used these guys for years and their batteries are generally very reliable and good prices.

          You could in theory run two of those packs in parallel to make 48v 14Ah, but you would still need to upgrade the BMS to one that can output 25A continuous. If you can get hold of an SW900 display to use with the kit, there’s a current limiting feature in the advanced settings menu – so you could limit max current to 20A.

          I hope this helps.

          Cheers,
          Tony

          Reply
          • August 21, 2020 at 5:22 am
            Permalink

            Hey Tony,

            Thanks again for the link and the help! If I could, I would buy you a pint! Cheers!

            Ronnie Ron,

          • August 21, 2020 at 9:21 am
            Permalink

            You’re welcome Ronnie, anytime I can be of help give me a shout. If I ever make it over to the States I’ll take you up on your offer! 👍

          • September 24, 2020 at 2:34 am
            Permalink

            Hey Tony,

            Update: so I brought the battery that had the 48 volts with a 20 amp BMS and adjusted the amp flow on the SW 900 to 20 amps and I’m getting an estimated 700 to 750 watts from the 1000 W kit that I purchased. I don’t get a lot of endurance from it but I do get speeds above 30 miles an hour when the battery is freshly charged.

            So at this point, I’m going to buy a second (48 V, 8 amp-hours, 20 amp BMS) Identical battery and run it in parallel, which should give me around 16 amp hours at 48 volts. So my question is, do you know if there are any concerns with charging two different batteries at the same time through their two separate charging ports and chargers while running in parallel? Or, does charging one automatically charge the other that’s connected?

            Ronnie Ron,

          • September 24, 2020 at 2:59 pm
            Permalink

            Hi Ronnie,

            If you’re running the batteries in parallel, one charger will be sufficient as it should charge both batteries to the maximum 54.4v. It will just take longer to charge than a single battery.

            Regards,
            Tony

          • September 27, 2020 at 10:10 pm
            Permalink

            Thanks Again Tony!!! Cheers!

          • September 28, 2020 at 8:03 pm
            Permalink

            You’re welcome 👍

  • August 17, 2020 at 5:40 am
    Permalink

    Hi tony, I recently bought this kit in the 1500w version and am now buying a battery, the seller said for the voilamart 1500w kits the battery must have be 48v and 14.5 nominal amps minimum, i was wondering if a 12.5 amp 48v battery will work just fine?

    kind regards, tom

    Reply
    • August 17, 2020 at 10:15 am
      Permalink

      Hi Tom,

      It depends on the BMS rating of the battery. The 1500w Voilamart kit controller peaks at 35A, so you will need a battery that probably has a continuous BMS output of 30A with a burst output capability of around 50 or 60A. If your 48v 12.5Ah battery has a continuous output of 30A then you should be fine, if it has a continuous rating of about 20A, then every time you hit full power it will trip the BMS and the battery will cut-out.

      If you need any more advice, let me know.

      Regards,
      Tony

      Reply
        • August 17, 2020 at 2:24 pm
          Permalink

          Hi Tom,

          You should be fine with a 52v battery and Voilamart controller. I’ve used them several times without any long-term problems. It will also give you a bit more power (when fully charged).

          All the best,
          Tony

          Reply
  • August 10, 2020 at 8:35 pm
    Permalink

    I got one of these kits new, out of box. All parts are there. A couple questions. The guy I got it from insists this wheel (has gear cassette on it) can be used on the front or rear. Everything I’ve read says the rear axle is to large and long to be used on the front. Which is it. If it can’t be used on front (I have a Schwinn Meridian) I’ll simply put it on my husbands mtn bike. He needs PAS for hills. Second question. Is the LCD display necessary. This kit didn’t come with one. I was looking for one of those “plug-n-play” all-in-one front wheels with battery plugging into the wheel. But got a great deal on this unit. Guy to a boat trailer that was useless to me and gave me this kit. Trying to figure a way to limit output to meet US regs/ID regs and not have it run out from under husband.
    Thank you for any and all assist. I’m mechanically inclined, but no electrical engineer. I hate chasing gremlins.

    Reply
    • August 11, 2020 at 8:36 am
      Permalink

      Hi Marcia,

      If it is a rear motor with the gear cassette fitted it will definitely not fit on the front wheel as the hub spacing will be around 135-140mm. You don’t need an LCD display, as long as the kit has the throttle control with the on/off button and a 5-pin connector (for the controller) you should be fine. The only way to limit the power would be if you have a dual voltage controller. In the UK the Voilamart kit usually accepts a 36v or 48v battery and has an EU limiting plug (to only 250w). The SW900 LCD display that usually comes with these kits allows you to also change certain parameters and performance characteristics. So it may be worth getting one. Here is a link to a US seller on eBay. Here is a link for instructions on how to change the parameters on the SW900 display (if you choose to get one).

      I hope this helps. If you need any more advice, please let me know.

      All the best,
      Tony

      Reply
  • July 15, 2020 at 3:19 pm
    Permalink

    Value for Money

    8

    Performance

    5

    Efficiency

    6

    Hi, i’m from Italy and i have bought a pre-owned Voilamart 250W kit like this , eight months ago:

    aliexpress.com/item/4000738981902.html

    Works flawlessy, but perhaps now it is a bit more noisy than before. Do you know the name of the manufacturer for future spare parts (planetary gears)? I guess Voilamart is just the company that sells these motors. I have sent an e-mail to Voilamart, no reply till now.

    Thank you in advance

    Michele

    Reply
    • July 16, 2020 at 8:22 am
      Permalink

      Hi Michele,

      The Voilamart geared hub motor is a generic design so the planetary gear should be straightforward to replace if necessary. You will need to remove it and take a photo – Greenbikekit.com are very good for hub motor replacement parts. It may also be worth removing the cover (of the planetary gear system) and applying a small amount white grease to the gears, sometimes this quietens down the motor a little.

      I hope this helps, if you need any more advice, please let me know.

      Regards,
      Tony

      Reply
  • July 2, 2020 at 3:00 pm
    Permalink

    I have an original Sondors skinny tire version ebike . I could go about 10 + miles on a charge ( varying terrain ) with the Sondors. Do you think the Voilamart 500 hub, with 36v battery on a 26″ tire size mountain bike frame could run that distance ?

    Reply
    • July 2, 2020 at 5:40 pm
      Permalink

      I reckon with a 36v 10Ah battery you should be able to get around that battery range. I used to get around 15 miles from a similar 500w rear direct drive hub motor using a cheap 36v 13Ah battery (hilly terrain, full assist).

      Reply
  • July 2, 2020 at 8:11 am
    Permalink

    Hi Tony ,
    Sorted Pas , was a signal wire not matching up.(need to go to Specsavers.)
    But now blown my new Kt controller on the first big hill attempted. All the wiring is ok ,I have it fixed it in an XL box , but told by the vendor that’s not good . I feel like I’m flogging a dead horse here , some info suggests mounting it open on the frame for airflow which makes sense but will look crap , 2 controllers in 17 miles ,it seems like everyone else with a ebike lives somewhere flat .Set all the KT3 parameters up correctly ,only thing that’s new is fitting new levers for re gen which was working ok according to display .
    Any suggestions ????
    Cheers Tony.

    Reply
    • July 2, 2020 at 9:12 am
      Permalink

      Hi Shaun,

      What a nightmare! Those KT controllers are usually very reliable. I had a 1500w version once (with a 48v20Ah triangle battery), fitted to an old Steel Saracen rigid MTB and I screwed the controller directly onto an aluminium pannier rack with a waterproof cover over it. It didn’t look particularly good, but it held out. A lot of the hills near where I live are 10% average gradient over half a mile, and the controller used to still get quite hot to the touch. I managed to melt the phase wires on one climb (on an earlier build). That’s why I eventually moved away from DD hub motors and went to mid-drives. What battery are you using with yours?

      Cheers,
      Tony

      Reply
  • June 23, 2020 at 6:05 pm
    Permalink

    Hi Tony.
    Just fitted kt controller and KT3 display and not getting p.a.s or power levels .All plugs fitted but some wires looked different colours and had to cut the throttle from 5 to 3 wires red black and blue other than that everything seemed ok.
    I have set the basics up but not advanced parameters ,but I would not have thought they would cause this problem.I really need to sort this as I have friends wanting me to build the voilamart kit but I don’t want to use their controller.
    Cheers.

    Reply
    • June 23, 2020 at 9:22 pm
      Permalink

      Hi Shaun,

      You will probably need to change some of the P and C settings on the display. Here is a link to a good thread on endless-sphere.com explaining what they do.

      P1 is for the number of magnets inside the motor (can’t remember that one), P4 is for the throttle – if set to ‘1’ the throttle will only work once the bike is going about 4-6mph, if set to ‘0’ the throttle can be used from a standstill. C1 relates to the amount of magnets on the PAS sensor disc – if this number is wrong the PAS won’t work.

      Have a play around with the settings and see how you get on. When I first used a KT controller there was a bit of trial and error involved.

      Let me know how you get on.

      Cheers,
      Tony

      Reply
  • June 21, 2020 at 3:42 pm
    Permalink

    Value for Money

    8.5

    Performance

    8.5

    Efficiency

    4

    Hi Tony, i was hoping ot change to a thum controlle with a voltage readout. i have one bit it has :-
    5 Wires:

    Green: Hall signal; Red—Throttle +5V

    Black: Negative Wire; Yellow: Battery +

    Blue: Power lock wire output

    the unit has a 3 pin ( black, red ,green) connection and blue and yellow with bullet connectors
    can i follow the colour code and connect to the controller as above. ?
    also regarding the power switch (on off) blue / yellow one what would i pair this off onto?

    fyi
    https://www.ebay.co.uk/itm/Black-12V-72V-LED-Thumb-Throttle-W-Power-Switch-Voltage-For-Electric-E-bike-1/224024079703?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
    thanks in advance
    alan.

    Reply
    • June 22, 2020 at 8:00 am
      Permalink

      Hi Alan,

      I can’t say with certainty this throttle / voltage reader combo will work for sure with the original Voilamart controller, the colour coding is always different with a lot of Chinese components, so there may be a bit of trial and error involved. For the price it’s probably worth a go.

      Regards,
      Tony

      Reply
  • June 16, 2020 at 9:52 pm
    Permalink

    Hi Tony Ed here got a problem with a 500 w front wheel kit when you turn the throttle the wheel shudders any ideas cheers ed

    Reply
    • June 16, 2020 at 11:44 pm
      Permalink

      Hi Ed,

      It sounds to me like you may have a faulty hall sensor – these can be replaced if you’re handy with a soldering iron. First I would check the motor to controller connector. If that’s alright then you’ll need to remove the motor from the wheel and examine the circuit board inside the motor and the wiring loom (as this sometimes causes the problem). Hall sensors are very cheap to replace, but you will need to identify the type you have on your motor and go over to RScomponents – they’re about 75p each, most motors have 3 hall sensors and if you’re replacing one, you might as well replace all 3.

      If you need any more help, let me know.

      Cheers,
      Tony

      Reply
  • June 16, 2020 at 7:52 pm
    Permalink

    Hi Tony
    Had my voilamart 1000w rear hub drive and only covered about 50 miles and the motor is grinding only when I pedal and throttle , there is no noise and the wheel is free but have noticed the 3 motor wires connecting to the controller have melted slightly. Only had it 3 days and I love it or did ,please help .!!!

    Reply
    • June 16, 2020 at 11:37 pm
      Permalink

      Hi Shaun,

      The 3 phase wires are connected via bullet connectors and it is common to get resistance and heat build-up especially when the motor is under load (particularly when going up steep hills). The best way to remedy the problem is to mount the controller to something metal to provide a heat-sink and use a ceramic block connector to join the green, yellow and blue wires. I would also contact the seller and get them to send you a new controller. Let me know if you need any more advice.

      Cheers,
      Tony

      Reply
      • June 19, 2020 at 2:56 pm
        Permalink

        Cheers Tony ,
        I have taken your advice and got a KT controller to go with my KT3 display (which I thought was a Sw900) having waited 3 weeks for.!!
        Kt a lot dearer but 3 day delivery as oppose to 3-6 week from China so no brainer.
        Will the sine wave make much difference to efficiency of the battery life.??
        Cheers.

        Reply
        • June 19, 2020 at 9:32 pm
          Permalink

          Hi Shaun,

          If there is any improvement in efficiency it will be minimal, it makes the whole motor run a bit smoother and quieter though so it is definitely worth it. The KT controllers are so much better than the cheap ones that come with the Voilamart kit.

          Let me know how it all goes.

          Cheers,
          Tony

          Reply
  • June 10, 2020 at 8:02 am
    Permalink

    Value for Money

    9.5

    Performance

    9.5

    Efficiency

    4.5

    Hi Tony, where did you get the Hall sensors from. Getting a constant 5V from all the sensors when turning the wheel. Expected one to have failed but looks like all 3.

    Reply
    • June 10, 2020 at 9:02 am
      Permalink

      Hi Jim,

      RS components, they should have the correct hall sensors in stock, I think they’re about 75p each. Here is the link to their website.

      Regards,
      Tony

      Reply
      • June 18, 2020 at 9:06 am
        Permalink

        Hi Tony, thanks for that. Fault was one of the wires had come lose and one of the sensors had fallen out, I’m at a loss as to how that could of occurred. 3 soldered points ???
        I’m thinking it could of occurred when my mate took a tumble on the bike a while ago, hit the curb which threw him off headlong into a wall. Dislocated shoulder, I couldn’t stop laughing when I found him, don’t think I’m mentally equipt to deal with a fully grown adult whining like a baby. Thing is its been used since then, so go figure ??
        Anyhow all working and once this shit weather does one we’ll be out and about again.

        Reply
        • June 18, 2020 at 10:22 am
          Permalink

          Hi Jim,

          Thanks for letting me know, glad you managed to get it sorted. To be honest, those kits are built down to a price and poor / dry solder points aren’t uncommon. The jarring of the accident might have played a part – I’d have had trouble dealing the whining too🤣 that’s why I ride alone most of the time!

          Cheers,
          Tony

          Reply
      • July 9, 2020 at 5:18 pm
        Permalink

        Tony will this Conversion kit work on a Schwinn beach cruiser I have a 500 W 48 V frog battery

        Reply
        • July 9, 2020 at 6:17 pm
          Permalink

          Hi Brian,

          I’ve fitted one of these kits to a Schwinn beach cruiser before and if my memory serves me correct, the only issue I had was mounting the pedal assist sensor (the Schwinn has an old style one-piece crank / bottom bracket). Your battery may work with the Voilamart kit providing the continuous current rating (in amps) matches the minimum required by the controller – I think it’s 22 Amps.

          I hope this helps. If you need any more advice, let me know.

          Cheers,
          Tony

          Reply
  • May 31, 2020 at 4:25 pm
    Permalink

    Value for Money

    9.5

    Performance

    8

    Efficiency

    8

    Tony, can you let me know how to reduce the acceleration from the pedal sensors as the bike accelerates at max rate as soon as i begin to pedal.
    Is there access to the controller to adjust this at all.

    i have the 1000w 48v rear wheel kit

    i am very please wiht the unit over all. th ebuild quality seems high.
    the unit is very very quiet
    35km on a 12ah 48v battery so very happy there too off road. but the range would be greater if the acceleration was reduced as it would allow me to ride to help it along. thanks in advance
    Alan

    Reply
    • June 1, 2020 at 7:41 am
      Permalink

      Hi Alan,

      Here is a link to a PDF copy of the SW900 user manual. The settings you will need to change are P11 PAS sensitivity (1-24) and P12 start strength (0-5). I would have a play around with the settings and see what works best for you. As a starting point I would lower the start strength incrementally until it feels softer on the uptake.

      If you need any more advice, let me know.

      Cheers,
      Tony

      Reply
      • June 1, 2020 at 1:41 pm
        Permalink

        Value for Money

        9.5

        Performance

        8

        Efficiency

        8

        Tony,
        Thank you for your reply. I have a small lcd screen on the throttle controller only, so i guess i need a sw900 unit, will the plug straight into one of the multi plugs off the controller?
        do you have a recommended vendor for the sw900.

        thanks Alan.

        Reply
        • June 2, 2020 at 9:55 am
          Permalink

          Hi Alan,

          The SW900 display should plug straight in. I’ve just checked on eBay, and there are no sellers with UK stock. The only one’s I could find were displatched from China. Here is a link to the product page.

          Regards,
          Tony

          Reply
          • July 6, 2020 at 9:52 pm
            Permalink

            Value for Money

            0

            Performance

            1.5

            Efficiency

            0

            I have a question about the 1500w with controller built in don’t see to much about them guess it must be a new thing but wanted to see if you know anything about it and is it worth buying or is it better to buy the one with the controller on the outside

          • July 7, 2020 at 7:51 am
            Permalink

            Hi,

            I fitted one of these Voilamart 1500w kits with the built-in controller a couple of years back. The motor itself was very smooth and quiet. My only complaint was the wheel was incredibly heavy. The customer I converted the bike for hasn’t had any issues (to my knowledge). I would still personally go for an external controller as if there are any problems they are much easier to replace.

            All the best,
            Tony

      • July 15, 2020 at 8:49 am
        Permalink

        Hi Tony
        I’m struggling to find how I can control the pedal assist power. It’s dangerous as it just flies straight away when you pedal. I have the voilamart 48v front wheel kit. Twist throttle. I love all of it. But I need to find an lcd monitor and I guess I need to change the controller as it doesn’t have a spare cable for monitor. Please can you help. Thank you.

        Reply
        • July 16, 2020 at 8:17 am
          Permalink

          Hi Bryan,

          I usually fit ‘KT’ series controllers in conjunction with a KT-LCD3 display. If your current controller has a 5-pin block connector that goes to the throttle, you could just purchase an SW900 LCD display – these are available from eBay (via a Chinese seller). Here is a link for the KT controller and display combo.

          If you get either display they can be configured so the pedal assist uptake is much softer when starting. There are a couple of good threads over at endless-sphere for the KT display settings and SW900 settings.

          If you have any more questions, please let me know.

          All the best,
          Tony

          Reply
  • May 30, 2020 at 8:54 pm
    Permalink

    This thread is really useful, thank you 🙂 I have a 1500w Voilamart controller, and I would like to know if it’s possible to use a smaller battery like 1000w or 750w with the same controller or should I replace the controller for one of the correct rating? Thank you

    Reply
    • May 30, 2020 at 9:46 pm
      Permalink

      Hi Toby,

      If your controller is the same as the one’s I’ve had experience with they should be dual voltage – 36v / 48v. It should say on the label of the controller. The only thing you’ll need to make sure is that the battery’s discharge current is no lower than the nominal current stated on the controller. I think the 1500w is 35A max and 25A min. So you can use any battery as long as it has a 25A BMS. Most 48v 13Ah batteries have a 25A BMS, but if in doubt check the specification first.

      Cheers,
      Tony

      Reply
  • May 23, 2020 at 10:12 pm
    Permalink

    Hi there, I’ve recently purchased a Voilamart 1500w rear drive kit.. and I simply cannot get the thing to fire up at all. I purchased a 21amp battery, have wired everything up and getting no movement nor lights (on the throttle mounted display) at all. I’ve disconnected every component, and when I connect the only the positive and negative wires from the battery to the controller it appears that it is shorting out the battery, as the multi-meter reads 1.2 volts down from the initial 54 volts . I’ve removed the screws and slid the controller out of the housing to see if there was anything burnt out or popped (other than the positive wire for the light connection not being connected), but I have noticed that the major solder points on the PCB appear to have been resoldered (different finish and excess flux on only on those areas)… I’m waiting on a reply from the seller, but is there anything else that you might be able to suggest?

    Reply
    • May 25, 2020 at 9:48 am
      Permalink

      I’ve had a handful of issues with Voilamart controllers, either not working out of the box, or failing shortly after installation. I would personally recommend upgrading to a KT series controller (at least 48v 30A) and KT-LCD3 display. The KT controller’s use better quality MOSFET’s as well.

      Reply
  • May 21, 2020 at 8:36 pm
    Permalink

    Hey on the 1500w kit the controller has a empty headlight led plug .. can I use that for anyheadlight or their one that I have to buy for that plug ?

    Reply
    • May 22, 2020 at 8:43 pm
      Permalink

      Hi,

      I haven’t tried any headlights with the Voilamart kit, so can’t say which one will work correctly. You will ideally need one with a 36v / 48v output – like this one from Amazon.

      All the best,
      Tony

      Reply
  • May 20, 2020 at 3:08 am
    Permalink

    Value for Money

    0

    Performance

    3.5

    Efficiency

    0

    One more question: the efficiency is rated as poor… why is that? Is that inherent to all brushless hub motors?

    Thanks again!

    Reply
  • May 20, 2020 at 3:06 am
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    There are three wires from the motor with bullet connectors: yellow, blue, blue-green. There are 3 corresponding wires from the controller: yellow, black, blue.
    I connected yellow to yellow, blue to blue, black to blue green. I haven’t connected the PAS to anything. Not getting any torque out so far.
    Is the pedal assist sensor required?
    What does the red button on the throttle/display do?
    I’m ready to roll! Will try to get crank off so I can install PAS. Thank you!

    Reply
    • May 20, 2020 at 8:39 am
      Permalink

      Hi Chris,
      The black wire coming from the controller is the battery negative wire and should not be connected to the green phase wire. There should be 3 corresponding phase wires on the controller yellow, blue and green that match the 3 phase wires coming from the motor.

      Double check and let me know.

      Regards,
      Tony

      Reply
      • May 21, 2020 at 5:52 pm
        Permalink

        Damn! Thank you! I must’ve been having an over-excited senior moment!
        Got the wiring corrected and now it works fine. (Funny how that happens)
        Now to test the range! 36V, 20Ah battery.
        Thanks again! You’re a life-saver!
        -Chris
        (I don’t believe in rating things till I’ve had a chance to use them a while, but for now, this seems pretty fun!)

        Reply
        • May 21, 2020 at 8:39 pm
          Permalink

          No worries, glad to help.

          All the best,
          Tont

          Reply
  • May 10, 2020 at 12:20 pm
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    Hi Instead of using the throttle control supplied could I use a thumb type controller instead , I think I would prefer it this way .

    Reply
    • May 10, 2020 at 12:42 pm
      Permalink

      Yes, you can use a thumb throttle. I have fitted them before to Voilamart conversions. You need to make sure it has the same 3-pin block connector as your current throttle. Here is one on eBay that should do the trick (check the connector block in the photo).

      Cheers,
      Tony

      Reply
      • May 10, 2020 at 1:40 pm
        Permalink

        Thanks Tony , this one looks fine and a UK seller .
        My conversion kit is on its way so just a quick question the blue road legal cable will reduce you to 250w , so if I do not plug it in and it will be higher output.
        Obviously this is when I will be riding offroad !

        thanks
        Dave

        Reply
        • May 10, 2020 at 4:08 pm
          Permalink

          Yes, that’s correct. There’s 2 blue wires coming out of the controller (silver box) with a male and female connector. Plug them in and it limits the power output down to 250w.

          Reply
          • May 12, 2020 at 8:49 pm
            Permalink

            Sorry about all the questions , but will the kit come with connectors for attaching my battery to . Its hard to work out looking a just pictures . I have purchased a 48v 13ah battery but it doesnt show what connectors look like , hoping they are all standard .

            thanks
            Dave

          • May 13, 2020 at 8:07 am
            Permalink

            Hi Dave,

            The Voilamart kit use Male / Female bullet connectors for the positive and negative battery connection, whether or not they will correspond to the connectors on your battery is another matter. Sometimes you’ll find they correspond, but are either too big or small. What I usually do if this is the case is either solder and heat shrink the + – or change the connectors to something like an XT90. If the connectors fit, but are just a bit too big, you can crimp and use heat shrink.

            Regards,
            Tony

    • May 30, 2020 at 9:02 am
      Permalink

      I have the front wheel Voilamart conversion 48v and would like to know if anyone has found a suitable battery and charger ……I fear I may have made a big mistake with this one ?

      Reply
      • May 30, 2020 at 2:46 pm
        Permalink

        Hi,

        If have found a 48v 13Ah battery on eBay Australia. It should be compatible with the Voilamart motor. You will get a range of between 30km – 50km depending on how much power you use.

        Reply
  • April 22, 2020 at 10:59 pm
    Permalink

    Value for Money

    10

    Performance

    0

    Efficiency

    0

    I have a vpower battery 48volts 26ah.
    How do I wire the battery to the controller ?

    Reply
    • April 23, 2020 at 8:38 pm
      Permalink

      You need to connect the positive (red) to the red (on the controller) and negative (black) to black on the controller. If your connectors are different, it would be worth using XT90 connectors due to the high output of your battery. The other alternative (if the connectors are not matching) is to solder and heat shrink the positive and negative wires, or use a ceramic block connector.

      Reply
      • April 23, 2020 at 9:52 pm
        Permalink

        Value for Money

        10

        Performance

        0

        Efficiency

        0

        Thank you. I’m operational now

        Reply
      • May 13, 2020 at 4:50 pm
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        hi what happens if I use the pas and throttle at the same time as I have no lcd screen

        Reply
        • May 13, 2020 at 6:42 pm
          Permalink

          Hi Kyle,

          You should be able to use the PAS and throttle simultaneously on the Voilmart. If you’ve got switchable power modes and you’re in level one, hitting the throttle will give you a boost.

          Reply
          • May 20, 2020 at 9:45 pm
            Permalink

            Value for Money

            10

            Performance

            10

            Efficiency

            10

            Hi
            I must say everything you’ve written in this article is 100% accurate. I have been usimg vialomart parts for the past 9 months. My first bike was an absolute beast.

            But I’ve built a 2nd bike with a brand new kit becaise my first bike got destroyed in a crash. The 2nd kit came with the SW900 parameters not set correctly. I’ve had several back and forth messages woth Violamart to get the correct settings only to realize that they are just doing branded drop shipping and they are very reluctant to contact the actual manufacturer to help me. I’ve been riding my new bike to work everyday now with the PAS level 1 running at 500-600W and levels 4 & 5 are useless because at level 3 the power max out. (It is a 48V kit). I’ve tried altering every parameter I can think of on the LCD but what I have now is the best I can get. I would be very grateful if you can check all the SW900 parameters of a 48V Violamart kit if you have one and share with me.

            I also have a 2nd question. Do you know how many Amps can the Lamp wires coming out of the controller can output? This controller is mot capable of responding to the SW900 lamp ON trigger (press and hold UP key). The controller constantly outputs 48V through the lamp wires from the moment the controller itswlf switches on. I habe added turning indicators, brake lights, front lights to my bike using HP tablet battery and step up buck converters. All my lights are 12V. I am planning on getting rid of this tablet battery and drawimg ppwer from the controller lamp wires to 48v to 12v 10A step down converter. But I am worried about the power limits of the controller’s 2 wires. Thanks so much for the article and in advance for your response.

          • May 21, 2020 at 11:39 pm
            Permalink

            Hi Kushan,

            I’ve had exactly the same issue with the Voilamart kit and SW900 display. I’ve tried changing the parameters (according to a thread on Endless-Sphere) but the amount of power always remains the same in levels 1-5. I managed to sort it out by purchasing a separate KT 48v 26A controller along with a KTLCD3 display – using this combination I could get the power levels to correspond to the assist.

            Regarding the light wire, I’m not sure of the output in amps, but I believe one of my old customers has been using lights with his (connected to the controller). I’ll try and get hold of him to find out what set-up he is using.

            All the best,
            Tony

          • May 25, 2020 at 10:46 pm
            Permalink

            Hi Tony

            Thanks for the reply. How I’ve managed to get some difference in PAS level 1-3 on SW900 is by changing the number of speed magnets to 50. On the Ebikeling.com website there is a manual for the parameters in which they say that it’s 47 for direct drive motors. And I’ve read on a few forums that it’s 48. But I opened the Violamart motor and counted 50 neodymium magnets. Since i entered 50 in the SW900, I’ve got some difference between levels. It’s not perfect but if you would like to get some use of your old SW900 and the controller, you can with this method.

          • May 26, 2020 at 7:39 am
            Permalink

            Hi Kushan,

            Thanks for sharing, that’s really useful to know. Much appreciated.

            All the best,
            Tony

  • February 15, 2020 at 10:23 pm
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    Olá tive um problema meu painel não quer mostrar meu consumo de energia aquele que aparece em baixo para que eu controle minha bateria durante o dia ! E a velocidade também está instável não aparenta estar certa tem solução para isso ?

    Reply
    • February 16, 2020 at 1:06 pm
      Permalink

      Olá, Parece que seu painel de exibição pode precisar ser configurado. Você sabe qual é o seu painel de exibição – é o SW900 ou o KT-LCD3? Se o parâmetro de voltagem da bateria estiver definido incorretamente, o indicador da bateria não funcionará. A medição da velocidade é feita internamente usando o número de ímãs no motor – se essa configuração estiver incorreta, você obterá uma leitura falsa da velocidade. Deixe-me saber qual tela você possui e enviarei um link para as configurações e como alterá-las. Atenciosamente, Tony

      Reply
      • June 1, 2020 at 7:35 am
        Permalink

        Hi Tony, have you ever had one of the kits switch direction. I’ve been using mine 250\500w hub for a few days and turned it on and went in reverse. I’ve switched hall and phase wires now to go forward. I guess there is a reverse switch cable but can’t locate it. Any help appreciated. Regards Dan.

        Reply
        • June 1, 2020 at 2:16 pm
          Permalink

          Hi Dan,

          It’s not something I’ve come across before, and I’ve fitted quite a lot of these kits over the last 3 years. It sounds to me like either a fault with the controller or motor wiring loom. I’ve had one of those motors to bits before and the quality of the wiring inside isn’t too great. If you get stuck, I’ve got a spare Voilamart controller here if you need one.

          Cheers,
          Tony

          Reply
        • July 20, 2020 at 10:10 am
          Permalink

          Value for Money

          9

          Performance

          8

          Efficiency

          8.5

          Did you ever get parameters sorted because mine judders on throttle like a knocking in the hub?

          Reply
          • July 20, 2020 at 3:09 pm
            Permalink

            Hi Luke,

            It almost sounds like you’ve got a problem with either the hall sensors (inside the motor) or a bad connection. Do you have pedal assist fitted or is it just throttle control?

        • August 12, 2020 at 6:32 pm
          Permalink

          Value for Money

          5

          Performance

          5

          Efficiency

          5

          Hi Dan,
          Did you get this sorted? My OH has just fitted this on my bike and within hours it is only going in reverse?
          Thanks,
          Jo

          Reply

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