No announcement yet.

Cavalon Ring Gear

  • Filter
  • Time
  • Show
Clear All
new posts

  • Cavalon Ring Gear

    A friend of mine has a Cavalon with very low hours and discovered today that the teeth on the pre rotator ring gear are all bent with four of the teeth completely flat. The bendix still appears to be okay but cant imagine how much longer it will last.
    Would anyone know how this could have happened????

  • #2
    attempted engagement of PR @ flight rpm ... but bendix released back?????
    Chris T.
    3Rs - Rotors rock & rule!

    "Blessed are the flexible for they shall not be bent out of shape." Buck B.

    Time flies if you can but only the slowest.

    PRA# 4212
    EAA# 1126845


    • #3
      My wild guess; not based on any actual experience with this problem in an AutoGyro product; is the ring gear should have been hardened and was not. I would not fly the Cavalon until his is repaired.
      Regards, Vance Breese Gyroplane CFI


      • #4
        The bendix was probably not adjusted correctly making full tooth contact, it was probably just engaging on the outer edges of the teeth, Just like a car starter, in the old days you had starter shims to adjust the tooth contact, it would be my guess to get a new ring gear and properly adjust the bendix.
        The government cannot give anything to anybody that the Government does not first take from somebody else.

        I prefer dangerous freedom over peaceful slavery.
        - Thomas Jefferson

        Scott Essex....Flying H Ranch


        • #5
          There was a series of autoGyro ring gears that were not correctly hardened and were to be replaced. Id contact AG to see if this was in that series.
          Last edited by magknight; 07-16-2018, 11:42 AM.


          • #6
            AG have agreed to replace the defective ring gear. Thanks to all for your help.