300a esc and 70a motor

ESK8 Electronics
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21

I guess they`re just standard 8" pneumatics?

22

True dat. I didnā€™t realize that pneumatics are so damn huge.

23

Its a mountain board. So the wheels are very big 8inch So nothing happend right? Im a little bit confused with all of that data.

24

at 0.021ohm, the esc limits the current, not the motorā€¦ so at 12S you can get 300a.

simply shorting the motor with 48v (not advised) gives:

48v/0.021ohm=2285.71a

2285.71a * 48v=109714.28w

the job of the esc is to limit the current below 2285.71a (in this case to 300a).

for motor heating that works out to: 300a * 300a * 0.021ohm= 1890w motor heating @ 300a

since the kv is 149kv, torque at 300a motor current works out to: 300a * 0.064nm/a (kt-torque per amp)= 19.2 newton meters.

25

I didnt quite understand that, but there is no way you`ll get 19.2 Nm of torque directly from a 6374 motorā€¦

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26

Disregard the over educatedā€¦ Your motor will not pull over itā€™s designed amp if you donā€™t overload itā€¦ gear it properly so it operates in itā€™s load window and you will be fine. A 300a ESC on a 70a motor is a good combo and a great safety factor window for your power delivery systemā€¦

27

Thanks a lot!! God bless you