RE: Ohlsson & Rice Antique Airplane Engine
Just acquired a very nice O&R 60, 1947 vintage (ser no. 52700). It is in very nice condition, but i have a couple of questions. There was a hole drill throught the exhast port about 3/32nds dia. and through both the top and bottom between the inner and middle fin, closer to the middle fin centrally located. What the heck is that there for? Also the is a little radial play in the prop shaft. Only being familiar with modern day R/C motors(I love Enya engines) I don't know if this is O.K. in an older engine. I'm sure it did not leave the factory like that. How much running would cause wear in the prop shaft bushing? Could this be re-bushed? Is it necessary?
Mike MacLean
San Bernardino, CA