"F.H." wrote in message
news:njmae.772$Nc.305@trnddc03...
..

I'm inclined to agree with your assessment except I think 3" is a *big*
rock. If the blade is bent, the balance is gone.

Frank

Dohh!!!.........and.....(wink)......

Anymore the blades are so damned hard that the stress and deformation goes
directly to the crank output shaft....

To the point where nowadays you can generally straighten the shaft by
"dialing in" the blade and still get satisfactory results.

Been there and done it almost *too many times*...

( I dont mow grass anymore, but still I've got a wife that is *terribly
hard* on equipment )

--

SVL