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BrianG · 11.01.2006, 01:10 AM

I think there are a LOT of factors at play and it will be very difficult to find the perfect combo. I still think the procedure I came up with in post 13 would help prove it, but that's a lot of work and I don't even know if there is such a small dyno! :confused:

Gearing up a slow running motor works to a point. There are probably less rotational losses, but there is a point where the mechanical load is outside the motor's ideal range.

Running higher voltage on a lower wind motor also works to a point. When too high, there almost isn't enough of a load for the motor to operate optimally.

A specification that would be VERY nice to have for each motor in addition to KV would be a number representing the ideal amount of mechanical load for optimum running. Then it would simply be a matter of a little math to find the best combo. That said, the three specs I'd like to see on all motors are KV, ideal mechanical load, and max rpm where efficiency starts to decline.

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BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	11.01.2006, 01:10 AM I think there are a LOT of factors at play and it will be very difficult to find the perfect combo. I still think the procedure I came up with in post 13 would help prove it, but that's a lot of work and I don't even know if there is such a small dyno! :confused: Gearing up a slow running motor works to a point. There are probably less rotational losses, but there is a point where the mechanical load is outside the motor's ideal range. Running higher voltage on a lower wind motor also works to a point. When too high, there almost isn't enough of a load for the motor to operate optimally. A specification that would be VERY nice to have for each motor in addition to KV would be a number representing the ideal amount of mechanical load for optimum running. Then it would simply be a matter of a little math to find the best combo. That said, the three specs I'd like to see on all motors are KV, ideal mechanical load, and max rpm where efficiency starts to decline.