Hi Folks,
Working with a friend on restoring an old (70's) Graupner Bell 212 helicopter, which was fitted with an HB 61 Stamo, as far as I know, the main differences were they had a different head, for better cooling, and were fitted with a cooling fan on the rear crankcase housing that was driven from the crankshaft piston pin.
I've had a close look at the parts catalogs and the like here, and there's no specific parts related to that version, and it could well be that we don't need any specific parts for that version, the main thing I'm looking at right now is that the crank piston drive pin was loosened by an accident, and the owner is not too confident that it won't be thrown as a result.
He looked at the site here a while back, and at that time, there were no crankshafts offered, but they appear to be there now, but what I'm trying to check out is if the part that's shown would be the correct one for the Stamo version?
Anyone got any ideas on this one?
Thanks
Steve Garry