When I grabbed my prop the other day to move the plane it felt like the prop moved a bit more relative to engine than normal. Anyone know what the axial clearance spec is for o-360-a4m. Solid crank fixed pitch.
Also, that tolerance mentioned is very deceiving when felt on a large object like a propellor or flywheel. It might feel like you could measure it with a tape measure, but when you indicate it, will probably find it within specs.
Tim
I think you would have a filter full of aluminum if it were out of spec.
What I seem to see the most is people push the aircraft into the hangar using the prop. When they grab the prop to pull on it, there's kind of a "thunk" and you can feel the movement. But it's not what it seems. The thrust surface (front) of the crankshaft is banging on the front end of the case and there's plenty of mass there to make the noise.
Don't be surprised if you have difficulty getting a really good measurement (with the engine assembled).
