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  • MAC help needed

    It's been a while since I've danced with my first true love, the mighty MAC engine. I have David Praters old "Iron Rooster" in my shop for an electric starter installation and general return-to-flight restoration. For the life of me I can not find the prop bolt torque (wood prop) or the hub retaining bolt (into the crankshaft) torque numbers. Any help or directions are appreciated.
    Tom Milton, PRA Director, Need a DAR, Seat tank, Prerotator, Rotor Brake, or Rotor Tach?
    Have Airworthiness Certification questions?
    gyroplanes@aol.com or
    Visit www.calumetair.com

  • #2
    Tom did you check out the Tennessee Prop web site? They used to have wooden prop torque numbers on it.

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    • #3
      Just looked at their site under propellers there is a link to prop bolt torque listed by size of the retaining bolt.

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      • #4
        Tennessee Propeller Bolt Torque pdf
        Attached Files

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        • #5
          Thank you all. It's been a while since I've messed about with wood props as well. I sure like to have the hub-to-crankshaft bolt torque as well.
          Thanks again, Tom
          Tom Milton, PRA Director, Need a DAR, Seat tank, Prerotator, Rotor Brake, or Rotor Tach?
          Have Airworthiness Certification questions?
          gyroplanes@aol.com or
          Visit www.calumetair.com

          Comment

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