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I have a Wuxing S29X-DX half-width throttle that looks similar to the one in the image. I have glimpsed an unconnected yellow wire inside it, which is presumably non-essential as it works. However there is an intermittent fault so I suspect that there is another loose or broken wire inside. It...

I've been given a bottle battery by someone who no longer has the bike. I haven't got the mounting plate and although there are plenty of bottle battery mounts on ebay for example, they are different to this one. The battery has to be swung in from the side, so the top is a bit lopsided. It is...

I've been given a 18650 36V bottle battery by someone who no longer has the bike. I've taken the casing off to check it and was surprised to see that there appear to be two empty spaces for cells, so was concerned someone might have removed the cells leading to an unbalanced battery.* There are...

I was tidying my garage a couple of years ago and threw this weird useless object out. What a mistake to make! I now only have one for my Bafang motor. Its 10mm between the flats and 12mm between the arches. Anyone know where I can get another? The bent steel sort won't work as the tab is...

I have a controller marked LSW669-16 X100-7011-816 and CE:G3M20211-1592-16 on which the battery, motor and display cables are obvious and there is a 6 wire cable to the Wuxing S29X-DX throttle and display which has three battery level LEDs and a big red button. There are also: a medium sized...

I have a controller from a crashed bicycle. The battery, motor and display cables are obvious, as are the two small connectors for lights. There is one remaining cable which was ripped out of the bottom bracket with red/black/grey/brown wires ending in a small white plug plus green and yellow...

Mine won't run, so I am testing the components. 1) Motor works. 2) Brake lever motor cutout works (although in the opposite sense to what I would have expected) 3) Throttle works (also in the opposite sense to what I would have expected, but a post on a another thread by VFR400 confirms that...

I have a Momentum Electric Model-T Hall effect sensor brushless wheel and controller from a written-off electrice bicycle. The controller has 8Fun stamped on the back. I can see which are the cables for the motor and display and there are two paralleled plugs with red and black wires which I...

I have a brushed motor, I have looked on ebay for brushed controllers, but they don't seem to have any connection for a maximum speed control sensor. I imagine a brushless motor controller can use the feedback (Hall effect or magnetic) from the motor to manage the maximum speed, but a brushed...

I have a "Verteci" folding elebike, I don't know the model name, but it has "Zoom" on the handlebar stem. The controller electronics board isn't working, it is in a large metal tube inside the bottom bracket, so I will have to dismantle that to fix or replace it. The bike itself looks well made...