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Hello,
i have some exprerinece with FE Boating, but i am not sure, if i understand this correctly.
Lets have this hypotetical setup (torn from real world):
Motor: KV 2000rpm/V with eff. 80% at any Amp draw,
Power source: 20V under any load (not real world either)
Then no load RPM will by aprox. 2000KV (times) 20V = 40000rpm and
under load it will be 2000KV times 20V times (eff.) 0.8 = 32000 rpm
So it means, that 80% of energy is transformed to rotary motion and 20% is transformed to heat (bearing friction, winding Ri).
Am i correct?
I am asking you, because of DMAcalc http://brantuas.com/ezcalc/dma1.asp gives me another numbers (considering other variables, of course). I develop my own FE Calc, it should be more accurate!!!
Second question:
Do you have comparison of efficiency. of Turnigy 3656 motors, BJ25 3630-1500, Feigao motors (same size and KV)?
I hope, it is not very difficult question for you.
i have some exprerinece with FE Boating, but i am not sure, if i understand this correctly.
Lets have this hypotetical setup (torn from real world):
Motor: KV 2000rpm/V with eff. 80% at any Amp draw,
Power source: 20V under any load (not real world either)
Then no load RPM will by aprox. 2000KV (times) 20V = 40000rpm and
under load it will be 2000KV times 20V times (eff.) 0.8 = 32000 rpm
So it means, that 80% of energy is transformed to rotary motion and 20% is transformed to heat (bearing friction, winding Ri).
Am i correct?
I am asking you, because of DMAcalc http://brantuas.com/ezcalc/dma1.asp gives me another numbers (considering other variables, of course). I develop my own FE Calc, it should be more accurate!!!
Second question:
Do you have comparison of efficiency. of Turnigy 3656 motors, BJ25 3630-1500, Feigao motors (same size and KV)?
I hope, it is not very difficult question for you.