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You didn't need to remove the potting. You test through the wires. Measure the resistance between each phase wire and the battery positive, then repeat for the battery negative to get 6 measurements. each group of three should be the same as each other and in the range 7k to 24k or thereabouts...

Any foldable electric bicycle can be transported in a car boot, but you wouldn't want to do it every day. The Honda Dax and its Chinese clones are probably the only sensible motorbikes than can go in a large car boot, but you'd only want to do that once in a long while. The only foldable bike...

The HD running at 48v and 25 amps is roughly double (2.168) the power of yours. and the 52v takes it up to 2.33 times your power.

I don't understand what you said. Either the wheels spin freely or not, which you can test by lifting the bike up and spinning them by hand. If they spin freely, the bike would be the same as any bike with an additional 10kg load. It can't be harder than towing a 23kg trailer.

The higher the power you see on the meter, the faster you're wearing out the motor. In fact it's probably an exponential relationship. The controller doesn't wear out, but if you hold too much current for too long by letting the crank speed drop, it overheats and something pops. 250W is...

Give us a link or show us some pictures. Most likely, nobody has heard of them, but it might be a branded standard Chinese bike.

You have to understand how a crank-motor works. When you give it max throttle or max PAS, the current through it depends on the crank speed. Highest current is at lowest crank speed. Therefore, if you're in top gear at 15 mph and you release the speed limit, the crank speed will go up and the...

You buy a cable with an outer, then you can route it wherever you want. You cut the cable outer to the length to go between the gear shifter and the derailleur. If you presently have multiple sections of outer cable between stops, you can run the new outer between any of the stops. You won't...

Check that it hasn't gone to sleep.

2: 25-2:40. The thing you can't fit is at 2:48-3:00.

A bit late! I posted a thread about that a couple of weeks ago. https://www.pedelecs.co.uk/forum/threads/interesting-new-french-bike.40943/#post-613779 Please post any comments in the original thread to keep it all in one place.

It depends which motor you have. You didn't say. Bafang make 100s of different ones.

It's DMHC, not HnH. Make sure you get the right connector: https://www.aliexpress.com/item/1005001723700340.html You have to tell them some parameters, which I'd guess are battery voltage, max speed and current, so you get a chance to change it if you want.

That's the sort of fault that can be caused by water getting in. Did you ride it or park it in the rain?

Where do you live, Bethan, or are you prepared to travel any distance, like 500 miles, to see one.

Yes, everything looks OK. you won't be able to use the lock-ring, so get some Loctite to prevent the sleeve nut from coming undone. Your cable guide might have to go, in which case you can re-route your cables in outers, or you might get enough clearance if you change the screw to a countersunk...

Your freehub is shot. You might be able to repair it, otherwise get a new one:

This looks like the version you have. he got the number of balls wrong - one too many in the inner race and one short in the outer:

Is there a spline or hex inside the hole? Your photo is too dark to see. What size axle is it?

Here's a standard for an 18650. Point 11 details storage. I don't think you need to study test data and standards. Whenever you buy a battery or cell, it comes to you at about 3,6 to 3.7v per cell, which is the voltage the manufacturers and the suppliers store them at. That's good enough for me...