Mamba Pro - for all you tech-heads

[Pdelcast]

Originally Posted by SpEEdyBL

Very true, but the 1900 i am refering to is effectively a 1512 1.5Y with twice as much resistance.

You could make the resistance 50 times as much -- still wouldn't have any real effect on current draw.

You have to realize these motors will pull whatever current they need to produce the torque you ask of them.

A 1512/1.5Y has about 6.5 milliohms of resistance. With a 20 volt battery, the stall current is about 3100 amps.

A 1512/1Y (like the Castle 2650 motor) has about 4.5 milliohms of resistance. With a 20 volt battery, the stall current is about 4400 amps.


So you see, resistance doesn't matter ONE BIT. It's about torque generation -- which is gearing, tires, terrain, vehicle weight, etc.

The motor will draw whatever current it needs to generate the torque that is asked of it. A 1512/1.5Y when incorrectly geared can easily draw over 1000 amps.

All of these types of motors don't have enough resistance to have any real effect on current draw.