[starscream]

Hey Serum,
I guess the appropriate question I should ask is what's the efficiency range of the motor (say the 2240/10)?

Here's a quote I received from an electrical engineer:
Higher voltage allows a stiffer gear ratio and thus requires a lower current to make the same power that lower voltage and higher current produces.
Higher efficiency comes from running cooler at the lower current....if the current is high enough to be in the max efficiency range of the motor.
Since you're racing, you can relate to Formula one cars. They make power with small, very high revving engines. They rev to 19,000rpm on a V10! The same approach applies to electrics. A small high revving motor geared properly will be more efficient overall that a larger, heavier, lower revving motor.

This is also what I have recently read, if you are below or above the efficiency range of a motor, the current will increase so max efficiency should be somewhere in the upper limit of this range.

So, it seems that Promod should be able to add enough voltage to the 2240/10 to be in the upper limit of the efficiency range of the 2240/10. 9s should put him at 49284rpm which should suffice thus achieving the same or more power with less current. I think if Promod tests this the numbers will tell us if it is correct. I believe the amps will drop and the motor will be more efficient if he runs 8s or 9s with the 10/51 gearing.

We really need to know what the specified efficiency range is to be completly accurate.

I would love to get a 2240/10 but I'd like to see some numbers first.

Thanks