Fightercat ESC settings

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  • worriedsick4u
    Senior Member
    • Dec 2011
    • 693

    #1

    Fightercat ESC settings

    Running a 1527/1Y with a fightercat 300a esc. What is the PWM setting? 8khz 16khz or 32khz? Thanks
  • srislash
    Not there yet
    • Mar 2011
    • 7673

    #2
    Standard is 8khz. I haven't found or heard of a use for the other settings as of yet(or been given examples for their use).I know it has been asked plenty.Maybe someone can shed some light on this for us.

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    • siberianhusky
      Fast Electric Addict!
      • Dec 2009
      • 2187

      #3
      The higher the PWM the more efficient things are BUT a higher pwm rate can cause more heat in the fets as they are switching on and off faster, the esc is happiest at a lower pwm frequency
      KV x Voltage x Pole count / 20 is a formula that can put you in the ballpark, this isn't the actual use for this formula but it gives you a starting point.
      Works out to 5.6khz assuming you're running a 6s setup, so you'd leave the PWM at 8.
      Also not knowing all the exact specs of a motor you are safer sticking with a lower PWM frequency, can't run the proper formula if you don't have all the numbers!
      A lot of the serious heli guys will play with PWM and timing to find the sweet spot, their requirements are very different from ours though!
      One last note, One of the worst things you can do is a high PWM rate and part throttle running, thats the mix for a smoke show!
      If my boats upside down then who owns the one I thought I was driving the last two laps?

      Comment

      • carlcisneros
        Fast Electric Addict!
        • Jan 2010
        • 1218

        #4
        set it to 8khz and timing on a WYE motor: 5-10 Deg. MAX on those ESC's.

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        • worriedsick4u
          Senior Member
          • Dec 2011
          • 693

          #5
          Thanks Carl. 11 ran a little hot. I'll back it off to 10 and leave it set to 8khz. Just simply for knowledge what are the other settings for?
          Disregard. I just read the above post. Thanks guys

          Comment

          • worriedsick4u
            Senior Member
            • Dec 2011
            • 693

            #6
            Originally posted by siberianhusky
            The higher the PWM the more efficient things are BUT a higher pwm rate can cause more heat in the fets as they are switching on and off faster, the esc is happiest at a lower pwm frequency
            KV x Voltage x Pole count / 20 is a formula that can put you in the ballpark, this isn't the actual use for this formula but it gives you a starting point.
            Works out to 5.6khz assuming you're running a 6s setup, so you'd leave the PWM at 8.
            Also not knowing all the exact specs of a motor you are safer sticking with a lower PWM frequency, can't run the proper formula if you don't have all the numbers!
            A lot of the serious heli guys will play with PWM and timing to find the sweet spot, their requirements are very different from ours though!
            One last note, One of the worst things you can do is a high PWM rate and part throttle running, thats the mix for a smoke show!
            Thank you. You are correct on your assumption. 6S.

            Comment

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