brushless motor timing

[stumpiey]

Hi all

what differance does altering motor timing make ?

I have an ezrun motor and esc, the standard set up is 15 degree advance, and has settings from 0 to 26.25

any advice is welcome

stumpy

[redonesgofaster]

HI,
here's my tupennce worth,


Altering the timing will potentially alter the motor RPM and hence speed of the motor but may also increase temperature.

I'm not sure about the EZrun but if its sensorless then you probably do this via settings on the speedo via setup or with software(from a PC).

If its a sensored system then you can also do this via rotating the motor endbell as thats where the sensors are.

Bottom line is you don't get anything for nothing. Playing around with the timing will alter the way the motor revs. You should be able to find a sweetspot. But its effect is similar to changing the pinion size.

More advance means more speed/power to a point, but higher temps.


Ian

[Marvin]

Higher timing = higher kV, so higher RPM, lower torque*. Motor temps will likely increase, and run time will probably decrease.

Lower timing = lower kV, lower RPM, higher torque*, lower motor temps, longer runtime.

*With torque, some sources say higher timing = higher torque, some say higher timing = lower torque and I'm not sure. I believe that higher timing = lower torque, as a higher kV motor has less torque than an equivalent size lower kV motor.

[stumpiey]

cheers for that guys, it helps a lot.
i was running ni cad's and was just about getting 23ish laps in the time limit so i didnt want to play around to much, but have gone over to li po's, it made the car quite a bit quicker.

Im very much a newbie, so i will be posting dumb questions from time to time