Subject: planet carrier
From: Rotary Engine
Date: 3/15/2007, 1:31 PM
To: AARotary Engine



    > Hi Paul,
    >
    > Awhile ago you were working on the Ford planet carrier and were
   removing
    > the cross pins that hold the planet-gear axle dowels in place. I
    > remember frustration was the order of the day. When you finally
   removed
    > them was there a method that worked best? ; ) Thanx, Dave
    >
    > They are staked in there. You might try taking them to a shop
    > with EDM Electro Discharge Machining. They can drill them
    > out so to speak with out hurting the planet carrier or the
    > pinion shafts.
    >
    > What ever you are doing sounds interesting. Designing a new
    > gear box perhaps? We need a better, lower weight design based
    > on the cheap Ford parts.
    >
    > Paul Lamar ...No rotor no motor.

   Dave,
   You can spot weld a stud onto/into the roll pin and use it to extract
   the pin. I've seen sacrificial studs made just for this purpose, though
   I've never tried the process.

   Another possibility is to drill the pin with successively larger drill
   bits. When the wall of the pin is around a fourth of its original
   thickness the pin will usually stick to the bit and spin right out. A
   carbide drill bit with lubricant will cut the roll pin. I would take
   the time to make jig to solidly cradle the planet carrier for drilling
   off-center, so, it doesn't get away from you and break one of those
   pricey carbide drills.

   Aubrey Thompson

   Not all are roll pins Aubrey. Some are solid pins staked in place
   with blind holes.

   Paul Lamar

   Weld your welding rod to the pin so they are both coaxial.
   Then pull the rod out with a bearing press.

   Erik



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