Rod alignment

[Synchro909]

Originally Posted by johnneilson

The keyway on the large end of the taper causes a stress riser and that is where it breaks.

J

I agree with what you say here and it is not contrary to what I am saying. IMO, the stresses that are concentrated at the end of the keyway arise from the flex in the axle caused by a worn hub. The hubs always wear at the nut end, allowing the wheel to lean inwards at the top. That puts a bend in the axle and as it turns, the stresses eventually cause it to fatigue at the stress riser - the end of the keyway.

Quote:
Originally Posted by katy View Post
You could try putting a spacer under the seal, to move it to a new spot. We've done that on different machines with success.
Great idea, katy, thanks, I'll look into it.

I've been doing that for years on my Model As. I even have a length of copper pipe the right diameter that I put in the lathe and cut off a piece each time I need one.