Search results

Hi The battery of my Wisper 705 is only charging to 2 LEDs after the bike has been in storage. (It was connected to charger set at 39v, but I’m now realizing this was probably wrong - it should probablyhave been disconnected and then charged occasionally instead?) I suspects some cells are...

Hi all, Some time ago the hub motor on my Volt Bike started to make some weird noises, and start pulling, and then suddenly stop. Then something went completely south, and it started just spinning (and make some click sounds I believe) when I pulled the throttle. Sounds like som gear has broken...

I have a pedal sensor with a led that doesn’t light up. Not sure if it ever did. It has a 3 pin (Julet?) connector. I am suspecting this as a culprit but have no way of testing it. Is there a way to test if it’s faulty?

I'm thinking I should put some parts laying around together to make my own "Swytch kit". I'm thinking to use a 700 front motor wheel, a small 36V 4ah battery meant for garden tools, and maybe a 14A controller. It should all fit in a small bag that could be carried in a front basket. A few...

Is there an easy way to determine if a hub motor functions properly without having the wheel on a bike hooked up to controller etc? I have few motor wheels laying around and would like to know if they can be used for anything (or sold).

I have a 705 Classic with some kind of electronics issue. When bike is turned on, first the lights on the led display go up and down in the startup procedure. Then the first capacity led starts blinking for maybe 5 seconds, and after that all the power indicator leds start blinking (the first...

Hey folks After supposedly killing my previous bike (with a 48V battery 17A controller for a BFUN 250W Hub motor), I am now thinking if I should build a bike dedicated for pulling heavy trailers up hills. I have never built anything from scratch (only upgraded the controller and battery on a...

I have an old Wisper 905 that I upgraded with a 48V battery and a 17A controller some time ago. It was working great, until earlier this year, as my wife was pulling a heavy trailer with the bike it suddenly started cutting out power if PAS was set above 3 (out of 5). On throttle it would cut...

Hey folks, I installed a KT36/48SVPR-17A with a 48V battery on an old Wisper bike with a BFUN8 250W, and it's been running great until the other day. Suddenly (after my wife used the bike to pull a heavy trailer) the power cuts out as soon as the load increases slightly. I noticed this happens...

Not sure if this is by the rules, but I'm posing a question form another forum here in hope of getting more thoughts. I installed a new kit, and and the brake symbol on the lcd is showing constantly and hence motor is not running (it did work briefly one time for a test ride). I've looked at...

I just installed a new kit, but the display shows the brake sensor symbol and the bike won't run. I suspect it's my fault as it seemed it all worked fine before I sprayed som WD40 on the brake cables. Does anyone know how these brake sensors work? Could the WD40 be the culprit?

I just had my display stolen on my Volt Metro. The display was a KM5S - a good few years old by now. Not sure if I can get a replacement - I have emailed Volt about this, but if not, can the display be replaced by any display? Or are these bike/controller specific? It was connected with these...

Hi I was given a spare battery (36v 10ah), that seems to be dead. It does not seem to charge at all. I'm thinking it might be worth trying to troubleshoot it, to see if I can get any life out of it. Could it be defective cells ? How would you go about such a process, if it's even worth it...

I need to thread a bunch of cables with connectors through an old wisper frame and I won’t be able to do it with connectors on. I need to take the cable ends out of the connectors of this type (see image). How do I get them out? I suppose there must be a way without cutting it off? Sent from...

I just inherited a 36v 10ah battery without a charger. I have a spare charger for another 36v 10ah battery. Charger is 2A. It has a different connector (a male instead of a female xlr) Can I just change the connector on the charger and make sure red goes to red and be good to go? Or should I...

So the battery on my old Wisper 905 died some time ago and it's sitting and collecting dust. I'm pondering rebuilding the battery to 48v (how would I do that?) and switching out components (I suppose I need a new controller, but what else?) to get more power out of the bike - I'm primarily...

Hi everyone, After having test driven a total monster bike this summer (5000Watts!) divided between both wheels, I started playing with the idea of adding a front motor to my old Wisper Works (equivalent of 905). Does that seem doable to those of you with experience of building e-bikes? How...

Looking around for different folders, mainly Dahons / Terns to convert to electric. Came across this one: http://www.ternbicycles.com/sg/bikes/eclipse-p9 It has disc brakes on both wheels. Would it be possible to put a motor in that rear wheel? Or would the disc brake be a problem?

Has anyone converted a Dahon (I'm looking at the Speed P8 or D7) or a Tern Link C7 (or similar) with a rear motor? I'm looking for more torque (not speed) and maybe the Q100H motor would be a candidate (is that possible to get installed in a 20" rim?). Suggestions/warnings/encourgament for such...

Hello everyone, I am about to embark on my first conversion, and after a lot of helpful advice in a different thread, I am moving the battery issue to a different thread - as I suspect there may be others interested in this one. I plan to run a Q100H motor with a S06S controller. The...