Low torque on half trottle?

[satanicoo]

Hi again guys,

Just a fast question. Bought a Motor and ESC, and i have realized that at lower throttle than full the Motor has less and less torque.
Does ESCs normally reduce current when not at full throttle?
Like, does it PWM it?

If so, can i build a ESC with no PWM, meaning no limit on current, even at low trottle?

My idea is to have the full Power of the Motor at any rotation, but would it burn?

[dburley]

You could with a programmed Pic microcontroller have a non-pwm esc. It would essentially be a constant speed control where throttle position would indicate motor speed. I built one years ago when starting out learning pwm and they work very well. I used a photo interrupter to catch each rev of the shaft. Basically it WAS pwm with period equal to a rev, duty cycle varying as neccessay to keep the rpm in check. I was using a series string of batteries and just touching the clips for connection. One time I mistakenly doubled the voltage and it took only 2 seconds for the thing to adjust down from that mad rpm at first to that it was set for.

Dave