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Those torque figures are bullshit. In any motor, torque is proportional to current. In the case of our three-phase motors, torque is also proportional to voltage. Therefore, a motor doesn't give a prescribed amount of torque. If you buy a kit with a battery and controller, then it's possible to...

You won't get any meaningful results.

It does a handshaking routine with the battery before it allows itself to charge. That makes testing difficult. It might be worth checking the output terminals of the battery to see how many are connected. If it only 2, you could change the BMS in the battery to allow normal charging. You can...

Looks like a code 13, which is perfect at 48v in a 20" wheel. It should give 18 mph max.

A back-pack battery is OK for testing, but a properly mounted battery is much more convenient and comfortable.

and speed sensor.

No, it doesn't invalidate any research. The effect is real, but it seems that nobody can agree what it is and how it happens. The problem is that it's not repeatable because the initial conditions that create it are difficult to pin down. You can't say that it's a rule that hot water freezes...

You've probably included one of the spacers in that measurement. 73mm is the standard.

To be sure, show all the connectors on the controller and what you have on the throttle. You don't need connectors. Cut them off and solder the wires together. insulate with heatshrink sleeve.

Which Smarta bike do you have? Which connector is faulty? What is the box that you want to replace?

It's probably this one that they use on the Suntour Hesc system that's fitted to the Halfords Carrera ebikes. They're really expensive from Halfords, but you can get them from Holland, I think, much cheaper. If you search the forum for threads on Carrera Crossfire chargers, you should find it. I...

Can you get free water by planting the seeds? I'll look out for them at the garden centre next time I go there for my virgin boy eggs.

It's a lot worse than a sweaty back. It sounds like a great idea until you try it, then you wished that you hadn't. It's OK for the first 15 minutes. That's if you don't crash and set light to yourself. Have you seen what happens when you short out the battery wires?

Did you read this bit? "There exists a set of initial parameters, and a pair of temperatures, such that given two bodies of water identical in these parameters, and differing only in initial uniform temperatures, the hot one will freeze sooner " There exists a set of parameters where it can...

A battery in a backback is a terrible idea. you'll soon get fed up with it.

This one will work. https://www.ebay.co.uk/itm/10-Pcs-Gold-Plated-Female-RCA-Phono-Jack-Panel-Mount-Chassis-Connectors-SocketUW/303057199038?hash=item468f9ddfbe:g:7MAAAOSw3YJZSeQz Same one cheaper from HK if you can wait...

Ebike RCAs are slightly different because they have power on them. If the pin stuck out, like the one in your picture, it would short the charger if it touched anything metal, so ebike ones have a shorter middle pin that doesn't stick out. OP needs the female one. I'm pretty sure that any will...

The difference in the power and the way the bike gives it is nothing to do with the type of sensor. The KTM is 48v (13S), so it has the potential to make 33% more power and torque than the Bosch, all other things being equal. Hub-motors also give their torque in a more usable way. The torque...

That's not right. It takes time for the evaporation to bring the temperature down to the same as the cold water. After that, they're equal. The amount of mass lost by the steam would be insignificant. Try it. Put a mug of boiling water on your kitchen scales and see the difference in weight from...

I already did in post #6.