91 Stumpjumper crack

jimbog

Senior Retro Guru
Hi All, I have a 91 Stumpjumper frame with a crack in the seat tube. Is it a bib job or could it be welded without costing the earth?
 

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Yes, TIG weld the crack, file back to surface and silver braze a reinforcement washer across the relief hole at the bottom of the slot.
Ream out to correct seatpost fit. Just make sure you're running the right size post, and that it extends well past the intersection of the seat stays and top tube.

Here's a similar job I did on a Bontrager:


All the best,
 

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