turbo crank dispute

[87gnturbosix]

Crank

Correct me if I'm wrong, but I don't see how fillets add strength. I thought they only remove a possilbe weak area, a stress riser.

 

[SloGN]

Correct me if I'm wrong, but I don't see how fillets add strength. I thought they only remove a possilbe weak area, a stress riser.

The fillets are pressed roller into the metal. meaning that the metal is compressed in the fillets which work hardens the metal thus it's stronger.



I think a few yrs ago steve (sully) ran in the 9's 9.94 with a 30 0ver crank before it broke! That motor had close to 300 passes on it i think before it let go. I think a rod failed before the crank did.

 

[87gnturbosix]

Crank

I stand corrected. :smile: I can see how that would strengthen it.

 

[Chris McDade]

I have a turbo crank fresh from the machine shop .030 on rods and .010 on mains. $125 plus shipping.