RC ESC?

[LikeTheSandwich]

Why wouldn't I use an RC ESC to power a go kart motor? I found one on Amazon rated up to 6s and 120A continuous. Using 3.7V batteries, that's up to 2,600W, which is quite a bit. So if I had a motor rated for that, what's to stop me from using one of those instead of a big, fancy one?

 

[Karts of Kaos]

those escs are meant for small motors at high rpm. not large motors at low rpm. i am no expert but that is my guess. also gokarts way like 2 or 3 hundred lbs an rc car weigh about 10

 

[LikeTheSandwich]

I know the weight is different. But my understanding is that at the end of the day Watts is Watts, as long as the gear ratios are right and the motor can handle the input. It seems to me that 25V at 60A DC is always 25V at 60A. It shouldn't matter (I would think) whether the motor runs at high or low RPM. If the motor is high RPM, I just use a different gear ratio.

 

[Karts of Kaos]

maybe? also the escs in rc cars are meant for brush less motors.

 

[LikeTheSandwich]

Yeah, that's the type I already have. It's a converted alternator.