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squeeforever · 11:31 PM

Alot of this is over my head, but for instance, the XL motors are all rated for around 1800 watts (I think), so if the dimensions, etc of the motor stays the same, but the wind/RPM's change, the watts is gonna be a constant. Example:

1800W / 22.2V = 81A

1800W / 14.4 = 125A

But what if the KV changed? The watts would be the same, but wouldn't the amperage change alot with the KV? Yes, it would. A higher wind XL motor (like a 9XL) on 18 cells will pull less amps than a 7XL on the same amount of cells, will it not?

Basically I see it like this. The formula you gave would work if the RPM's were a constant between each motor. That formula might work for other things without the extra variable...Now this may be wrong...But this is the way I understand it.

	(#11)
squeeforever RC-Monster Mod Offline Posts: 6,254 Join Date: May 2005 Location: Baton Rouge	11.18.2006, 11:27 PM Alot of this is over my head, but for instance, the XL motors are all rated for around 1800 watts (I think), so if the dimensions, etc of the motor stays the same, but the wind/RPM's change, the watts is gonna be a constant. Example: 1800W / 22.2V = 81A 1800W / 14.4 = 125A But what if the KV changed? The watts would be the same, but wouldn't the amperage change alot with the KV? Yes, it would. A higher wind XL motor (like a 9XL) on 18 cells will pull less amps than a 7XL on the same amount of cells, will it not? Basically I see it like this. The formula you gave would work if the RPM's were a constant between each motor. That formula might work for other things without the extra variable...Now this may be wrong...But this is the way I understand it. Last edited by squeeforever; 11.18.2006 at 11:31 PM.