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P3=1 is the setting.

That kit looks OK. You need the 15C cassette version. If you want to order, show us what options you are planning before ordering. It's 145mm wide, so you will have to stretch you frame a bit to fit it in, and you may have to dish the wheel too to get the rim central in the frame. That's normal...

You'll most likely be limited by how much meat is on the derailleur hanger, so do that side first, then the other side to match.

Most bike shops won't touch it because a hub-motor doesn't fit their fixture. The cost is about equal between buying it built and getting a shop to build it. In fact the shop will probably be dearer because the costs are close when you build it yourself.

Only the signal wire will have voltage going up and down!

A Dremmel (or imitation) with a carbide burr is the best tool.

Your axle is 14mm diameter milled down to 10mm across the flats, so you need 14mm x 10mm slots in the torque arms. the other size is 12mm x 10mm, which won't fit your axle. I'd be filing the drop-outs deeper. If you look at the centre of your axle, it's now about 4 or 5mm further down than the...

Because they just used the first thought that came into their heads instead of thinking the problem through.

The one that's not red or black.

It should be OK, but it depends on the gap between your chainwheel and BB. If the gap is too small, the one you already have would be better.

You'd have to test with a meter. I can't see your link. They want login.

That's very expensive. they're about £150 from Aliexpress or you can get amuch better one than the original for £250. When you use a substitute, always check the polarity of the connector with a meter, just to make sure...

That's a weird one. I think it's for hollow-tech type BBs. It has the wrong size hole for your bike You night still be able to use it. I guess it's designed to tie to the back of the chainwheel, but it will might be tricky to get it close enough to the sensor, which mounts behind the flange of...

Throttle is 5v, speed sensor is 12v.

The black and blue bridge is the cruise control. Take it off. Cruise control can be dangerous and you shouldn't want or need it. Chuck the Oxygen PAS and use the new one. The speed sensor is in the motor. It comes to the controller via a white wire in the 9 pin cable. You shouldn't have to do...

There's about a 70% chance that it will smoke the controller as soon as you connect. If you're lucky, you get a nice pop before the smoke comes, which gives you a chance to get clear because the smoke stinks. You can increase your chance to around 95% if you open the controller and see that the...

With the controller switched on, measure the voltage between the red and black wires on the throttle, then measure between black and the signal wire while you twist the throttle. The two results should be 5v and 1,2v - 3.8v.

You can probably use any 36v lithium battery. Show us what it looks like.

I think he means life-time of the battery, not range from one charge. It won't have any significant affect on the life-time of the battery.

https://bmsbattery.com/ebike/769-16768-q128c-135mm-500w-rear-driving-ebike-hub-motor-wheel-ebike-kit.html#/43-voltage-48v/214-rpm-328