Drive frequency

[NumanR]

Dont know which section this should be in, please feel free to move it if required.

Would changing the drive frequency of a speedo make any difference to a motor overheating? Also has anybody had good results by fitting fans on to motors to cool them down? Thanks for your advice in advance.

[George Stoker]

Not sure about drive frequency but sure the great marcoski will answer that one :) I do know that running a lower frequency can help on certain track/motor combinations.
Re fans - there is a thread somewhere in here all about that. do a search on fans.

[marcoski]

Low drive frequencies make the motor work harder and may contribute to overheating, but most overheating is caused by the fact that the cells have been continuously developed over the last few years whereas the the motors have not. The latest cells can deliver more power than the motors can handle!!

[NumanR]

Thanks Marcus

[jason]

Mark,

If your original pos was to do with you nuking motors in your big6 I suggest you don't use any motor hotter than a 13 and increase the drive frequency abit the motor will not get as hot and you will have a little less punch (No bad thing at BTCC at MK)

Jason

[NumanR]

Thanks Jason, you guessed correctly. Mark.

[ihateferrari]

Yeah the drive frequency describes how many 'pulses' of power your speed control delivers to motor per second. As a result, it also determines how long each pulse lasts. It is thought that with these longer pulses it 'shoves' the motor a bit more each time. It also means that the upwards of 80 amps or whatever the figure is being put into the motor lasts a bit longer which toasts the brushes and comm quicker. This generates heat.

In addition, for mod, higher frequencies are recommended so that the extra snap of the mod motor is smoothed.

rob

[LisaKeen]

You also need to take into account to use drive fequencies properly you need to be a feeder not a jammer, the drive frequency only works through the throtle travel because when you are wide open throtle the fets in the esc are open so there is no switching taking place. Thus if you a smooth enough on the throtle you could use a very slightly higher ratio and let the esc exelerate the motor rather than jaamming open the throtle and expecting the motor being able to cope with all the power of the cells being dummped into the motor and burning it out. ;D