Quote:
Originally Posted by Pdelcast
The issue is the ROAR rules -- they require a three slot, two pole motor with a tiny rotor and a huge number of turns. This would make a good low RPM, low torque motor, but we use them as high RPM high torque motors. High RPM motors should have a low number of turns to minimize inductance effects, iron losses, etc.
How many poles is the motor? If its a two pole motor, then yes -- that RPM is no problem. If it's four poles or higher, that's pushing the ESC a bit.
Really the only issue with high RPM is that the timing will retard slightly at high RPM because the microprocessor starts to fall behind on the rotor position estimation. Adding a bit of advance will help.
Thanx!
Patrick
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thanks for the quick reply, its a 2 pole motor, just one more reason i need to buy a data logger i guess
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