Amp Draw

[GriffinRU]

Originally Posted by mriccucci

Ok so im assuming that theres no way to figure out theoretical amp draw? Or is the amp rating of the motor the most that they will draw constant? I thought i saw somewhere that a 7xl will only draw 80a is this correct. I assume that the burst could hit almost 120 if not more.

Why not, there are programs like Motocalc which can provide you with data you are looking for. Question is do you know what to do with the data?

BrianG is correct, but there is no sense to talk about current draw when sensoreless motor shaft is stalled, ESC would limit current. It is much more important to track current while shaft is in motion, than you can observe all kind of interesting factors determine your motor performance.

If you just looking for maximum current draw for given motor, you are looking for the wrong parameter, because any motor can draw high current (depends for how long and which component would go south first, ESC, motor, battery, wires) in wrong configuration.

What you need is drive-train geared for motor which would be running most time in high efficiency range. That takes practice or understanding of motors.