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2

There are a few numbers on the motor, battery and ESC which you should compare to check they are suitable. Your motors have a current requirement (here, 11A) and your ESC must have a higher current rating than this; your 30A is very overrated but would work. The ESC should state its acceptable voltage range - this is usually given as a voltage (e.g. 11-17V) ...


3

A larger battery can supply more current, but will only supply as much as the motor and ESC pull from it. Once the battery is large enough to provide the power the motor needs, making it larger won't increase the power - much like increasing the size the fuel tank in a car won't change the engine power. If your motors will only draw 11amps, you don't really ...


2

Jacobs answer that you just need to tighten the nut more is correct, but I just want to explain why it (feels like it) is stuck when it is flush with the top of the motor shaft. Nyloc nuts, or nylon lock nuts has, as the name implies, a ring of nylon at the top (the white part in the image below). When tightening the nut the nylon has to deform, since it won'...


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