Prop Blade Wiggles on C182

In article ,
A Lieberman wrote:
Having seen what it took to get my bird back into specs, blade shake would
make me question whether there was a problem more then just the propeller
since we are only talking .125 of an inch.

See http://www.mccauley.textron.com/svcl.../sl1989-2C.pdf for
specific details regarding blade shake.


The original poster didn't quantify the movements of the propeller, but
based on the document quoted, I don't see any cause for concern unless
the propeller movements were far in excess of the recommendation. The
bottom line is that some shake and twist are normal, but a propeller
blade that is excessively "loose" in the hub is not normal.

Balance is an entirely different issue.



JKG

My Aviat Husky' Lycoming 0-360 with a Hartzell constant speed prop
always has 1/8"-1/4" play front to back coming from the crankshaft I
think. It always seem a little excessive, compared to others, but never
was a problem. Engine and prop is beyond TBO and still going strong....

Fore and aft crankshaft play is the engine's thrust bearing clearance and
play is normal. It may seem like 1/4 inch but actually is less.

Kent Felkins
Tulsa



"Doug" wrote in message
ups.com...
My Aviat Husky' Lycoming 0-360 with a Hartzell constant speed prop
always has 1/8"-1/4" play front to back coming from the crankshaft I
think. It always seem a little excessive, compared to others, but never
was a problem. Engine and prop is beyond TBO and still going strong....



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