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NoBozo · 10-23-2011, 06:40 PM

I've been thinking again.

Maybe the propeller shaft "Broke Off" ...just ahead of the propeller hub, and dropped the prop on the bottom. This could happen if the propeller shaft was not properly "Heat Treated" when it was manufactured. I have seen this happen with small engines. If the steel is heat treated improperly... and the steel becomes TOO Hard (Brittle) ....then ........SNAP.

SO: THIS (above) theory could be discounted quickly by just having a look at todays Propeller On The Lawn. Is there SOLID Steel material clogging the inside BORE of the propeller hub...OR... is it just rust scale from the bore itself. ....OR... is the bore CLEAN..

If the bore is clean, then my original hypothesis still stands.

NB

PS: I'm usually the first person to question my own thinking.

10-23-2011, 06:40 PM	#19
NoBozo Senior Member Join Date: Jun 2008 Location: Portsmouth. RI Posts: 2,231 Thanks: 400 Thanked 460 Times in 308 Posts	Seneca Propeller I've been thinking again. Maybe the propeller shaft "Broke Off" ...just ahead of the propeller hub, and dropped the prop on the bottom. This could happen if the propeller shaft was not properly "Heat Treated" when it was manufactured. I have seen this happen with small engines. If the steel is heat treated improperly... and the steel becomes TOO Hard (Brittle) ....then ........SNAP. SO: THIS (above) theory could be discounted quickly by just having a look at todays Propeller On The Lawn. Is there SOLID Steel material clogging the inside BORE of the propeller hub...OR... is it just rust scale from the bore itself. ....OR... is the bore CLEAN.. If the bore is clean, then my original hypothesis still stands. NB PS: I'm usually the first person to question my own thinking.