cheetah flex saft size

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  • larryrose11
    Senior Member
    • Jun 2010
    • 757

    #1

    cheetah flex saft size

    Hello,
    I am building a FC Cheetah with a 4092 sized motor, 1450KV, running in 6S, perhaps 7s later on. Im thinking a x450 or so prop.
    What size flex shaft is suitable for this motor?
    0.150 inch? 0.187? 0.25?
    I can make the 0.15 fit nicely. The 0.187 would be tight, but I could make it fit. The ID of the strut I have is 0.25, but it is meaty. I may be able to drill it out to 5/16th to accommodate a 0.25 flex, if there is a compelling reason.
    in any case, I plan on a Wholt brazed connection for strength. I have lost a few props when the flex came undone.
    Cheetah, Super Rio, (Mod) Starship (Mod and sold),
  • Heaving Earth
    Banned
    • Jun 2012
    • 1877

    #2
    At least 3/16

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    • martin
      Fast Electric Addict!
      • Aug 2010
      • 2887

      #3
      Deff not 0.150", 0.187 is good. I think youll find not many use .250" on electrics certainly not on this application.

      Comment

      • carlcisneros
        Fast Electric Addict!
        • Jan 2010
        • 1218

        #4
        use the 3/16" cable (0.187") and be done with it.

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