bo1 with a twist

I-ROBOT

Active member
WOW
That is a catastophic failure for sure!! It could be rebuilt but that cracked tube would have to be cut out and replaced. I'm not sure I would trust a repair weld there.

I always thought forks were small enough that it would make sense to heat-treat them but Chris didn't think the expense would be justified.

If I was building segmented welded forks now, I would not sell them without being quenched and tempered. There's no other way to make 4130 last in a light-weight application. There's just too many different microstructures and stress raisers going on in that design not to do heat treating. There are vibratory stress relief machines but I don't know how effective they would be for a small fab like a fork.

I have no clue what that ring (?) is that's around the top of the short tubes. Never saw anything like it before.

Let me know if you find out.
Scott
 
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