MMM Motor timing and best efficiency for 4 poles motor

[snellemin]

I know with some speed controllers, a higher timing is recommended with 4 pole motors. Hacker suggest 0-5 degrees for their 2 pole motors, with 2 degrees @ 8Khz being the most efficient for their motors. Hacker suggest 8 degrees for 4 pole motors. I run 10-15 degrees on my Y motors. On the D wound motor that I had, I just ran 0 Degrees. On Luciano ESC's I use 16Khz switching frequency for the 4 polers. Quark is set at 38Khz. What is the Castle PWM set at?

So, over the weekend I used 0 degrees timing with a 1512 2y and MMpro with 6s A123 in my Rustler. I then used 15 degrees timing and saw a difference in topend. I can pull wheelies while breaking the tires loose on concrete. I use heavy beadlocks btw. The fan did not come on and the system just ran "cold".

I remember Castle saying something about their ESC being able to automatically adjust timing for their motors, but not exceed the user "set" Timing setting. But I can be wrong with my thinking that though.

[nuz69]

The defaut timing in Castle controler is 10. But I still dont know if it's the most efficient setup with 1515 1Y 4 poles motor... Can someone from Castle Staff answer or ? I will maybe ask the support directly :)

[Pdelcast]

Originally Posted by nuz69

The defaut timing in Castle controler is 10. But I still dont know if it's the most efficient setup with 1515 1Y 4 poles motor... Can someone from Castle Staff answer or ? I will maybe ask the support directly :)

The default timing works very well with a Neu or Castle/Neu motor. Setting the timing lower will reduce top-end, but give a little more efficiency. Setting the timing higher will increase top-end, but give a little less efficiency...

Pretty simple really.

[nuz69]

Ok thanks Patrick.
But the exact number for the most efficient ? 8 ? 7 ? 5? 0?

[Pdelcast]

Originally Posted by nuz69

Ok thanks Patrick.
But the exact number for the most efficient ? 8 ? 7 ? 5? 0?

Timing of about 2-4 will work best with the four pole Neu or Neu/Castle motors. They will accept more timing, but will run a bit hotter.

Well, I wish I could tell you exactly, but it changes based on load, RPM, and voltage. High RPM setups (6S, low load) will get maximum efficiency with a little more timing, low RPM setups will get maximum efficiency with a little less timing.

[nuz69]

OK, thx for your detailed answer ;) Happy to have some technical about it.