Originally Posted by
bernside
The bad news is now the chain is jumping on the rear cassette every time I pedal hard in the smaller cogs. I replaced the chain, swapped rear cassettes, adjusted the (friction shift) cables, but nothing works.
I cannot figure how I changed anything with the frame that would cause this but I don't know...anyone have a clue...
Brazing the brake bridge will pull the dropout inward, toward the centerline of the frame. Did you check to see if the rear triangle is still centered with the main frame tubes?