>>>> there was an oil seal which fit around the hub and sealed the space >>>> between the hub and the case
>>>> It makes me think that this hub was ment to be a hub and bearing all >>>> in one Hey Orma - I am still trying to get my mind around the fact that your motor was operating (for nearly 20 years) without a front bearing. Anyone other than the Aviation mechanics and I would have been asking different questions. >From your observations there is no indication that the hub or the case has been doing any work, so #3 has been carrying the full load - where is the thrust washer /bearing on that engine? Given the cantilever distance from #3 to the prop - this says something I have been considering Steve Bennett's Great Plains VW prop shaft mount or a reduction drive as a means to relieve the auto engine of this load that it was not designed for - maybe I need not worry too much - now we see a Type 4 doing Ok with NO bearing. Other than G forces - there is another force at work every time you use the elevator. I heard of a Pitts 2A (IO-540) that had a crankshaft break clan off at the front bearing due to gyroscopic procession that was severe due to the sudden changes in direction. (G meter had nothing over 3 at the time) How much HP you figure you were seeing from that 2L Regards Steve J Askies"AT"microlink.zm
