Question for others using VESC regarding motor RPM.
I’m running at 50 volts, My ERPM is maxing out at 18000 which indicates 3000 rpm unloaded (spinning in air) 18000ERPM/6 poles is 3000rpm, I’ve verified that is correct using an android app that uses a strobe light function to check rpm (really easy effective way to check rpm). With a 130kv motor I should get 6500rpm at 50v right? I measured ~30v AC between motor wires at full throttle, has anyone else measured the ac voltage output of a VESC when not connected to a motor? Am I missing something? Is the KV rating wrong on this motor? What should the voltage between two of the motor wires be from the ESC at 100% duty cycle? I’m in FOC mode, max ERPM is set to 50k, and I’ve checked other minimums to see if something is limiting my rpm, and I can’t find anything.
ESC - Flipsky 75100
Motor: flipsky 65121 130kv
Hydrofoil: Gong Allvator M70 1500cm²
Battery: 12s1P li-ion
2kwh battery from battery hookup.com
Prop: 7 1/2 x 7 BA 3-blade cut down to 110mm