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That looks OK. One more test you can do from outside the motor. Check that you have 5v between the red and the black in the controller where the ones that come from the motor cable are soldered. if that checks out, you're going to have to open the motor to see what's going on in there and do...

The only test you need to do is connect everything and switch on. check that you have approx 5v on the red wire then check blue, green and yellow while you turn the motor wheel slowly backwards. If the halls don't switch on and off, something is wrong. My first guess would be that your motor...

4.25v is OK. The blue, yellow and green should switch on and off around 10 times per revolution. It's quite unusual for all three halls to fail together. The only way that can happen is if you have a damaged motor cable and the red shorted to one of the phase wires. Check your motor cable for...

The Bafang BBS01 system has been certified that it complies with EN15194, and so have many OEM bikes that it's fitted to. That makes it legal. There's no grey area to discuss. It's only scaremongering on forums like this that spreads these stupid ideas. All you have to do is make sure that the...

You don't spin the wheel, you turn it slowly!

Follow the cable from the motor until you come to a connector.

All bikes can be derestricted through software, so by your logic they're all illegal. Somebody already pointed out that off-road switches that remove the speedlimit at the touch of a button are illegal. Do you know what a switch or button looks like? It's not a wire connected to a PC, neither...

Cells are 18mm dia and 65mm long. That more ot less rules out a 10S4P pack, which would be 180 x 72 x 65 plus a bit for the BMS and any insulation or holders. You can save a bit of height by staggering the layers, but I don't think you'll go below 65mm. A 10S3P pack would be 180 x 54 x 65, so it...

Well, if you're convinced that there's no friction turning the wheel slightly forward or backwards, you'll have to open the motor to see what's going on. Take everything off the axle on the other side to the wire, undo the six screws and tap the axle from the other side to bring the guts of the...

It's not illegal. Don't scare people or give them misinformation. It's only illegal if you have the speed limit set to above 26.5 km/h actual speed.

It's a very common problem, but can have a few different causes. The first thing to check is all the motor connectors. if it has the 9-pin type of connector, it must be all the way in to the marked line, not just in tight. After that, you have to test the hall sensors in the motor and the...

Thanks for letting us know. We like happy endings. I'll be sleeping OK tonight instead of worrying aboout your bike.

That's weird. There's always some friction that turns the wheel, whether it's the woodruff key, clutch or gears that are faulty. Is the motor making the normal whirring sound? The only way that could happen is that something like a screw came loose inside, jammed the gears and broke the...

Yes, I get used to the pain in my broken big toe and in my Kidneys. I can live like it, but if there were a way to make it better, I would.

You can get a rear rack that fits on the seat-stays, but they are quite expensive. It would be much better to mount the battery there rather than on a front rack. You can't use a cantilever type, like the one shown above because they break unexpectedly due to metal fatigue unless you can find...

Lift the wheel off the ground to see if the motor turns it forward or backwards. If forwards, your clutch is stuck and probably needs to be replaced. If backwards, there's an electrical solution that depends on which controller you have.

Are you OK with soldering? if not, show your motor connector.

The proposed battery is 25 amps, so should be able to give enough current.

You've got your motor in upside down. the cable should go downwaeds from the axle. It's a shame you can't put your battery on the rear rack and your sandwiches in the bag on the front, which would be much better for your bike's handling.

I always end up regretting software updates, whatever they're for. Only do them if it's one to fix a specific problem that you have, otherwise save some disappointment and money.