Originally Posted by
moparbarn
My understanding is the higher the voltage, the higher the max operating RPM. I have one I got to use in gas rc race boats, but 17,000 to 19,000 RPM was beyond it's capabilities.
But, I think they use more power (higher amps) at the higher voltage, and may not offer any advantage at the higher voltage, unless that is all you have available (with lipos).