The International Cessna^® 170 Association

Just like to add, the rejections likely have more to do with corrosion. The engines with crank flanges that resemble a 9 iron
never make it to the shops in one piece

N2625U wrote:

wingnut wrote:Another interesting observation is most reject cranks happen at low or idle power rather than full power. I have a theory on this and I'm sure the engineers among us can explain this better than I can.

I'd love to hear the explanation for that. I would have guessed it to be the other way around.

I would also love to hear the explanation for that. It is a true observation.
Imagine holding a board in your hand..............a 1x4. It is 4 feet long. You have a mind to break it, so you swing it against a tree really hard. It breaks, and the broken piece flys of into nether land. Now, back up a bit and swing a little slower until the board doesn't break, and the energy transfers to your hands. Surely youve held a ball bat and it rattled you.