Thursday, March 4, 2010

Frame No. 2 - 5

so after a pause in the construction to improve my fixture i made some new progress.
having a reliable easy to set up fixture made sizing, mitering, and checking fit of the chainstays a breeze. once the fixture is set to the proper height and length i can keep checking the fit of the stays as i cope them.


with a little help from the framebuilders list, alex w, a protractor, and BG101 (by martin manning, cant find a download link), i sorted out my chainstay length and miter angles.

everything cut to length and mocked up.

tacked the chainstays to the BB shell, then tacked and fully brazed the dropouts onto the other end, then returned the the BB shell and finished off the fillets. didnt come out as clean as the other fillets, the BB shell/chainstays is a pretty tough one to nail on your second try.

7 comments:

Anonymous said...

Very inspiring. Can't wait to see it finished. Been laid off a while and comtemplating pick up a torch.

D n L said...

if you're gonna make a go of it, and want some simple fixturing lemme know.

Kurt said...

Thanks, my name is Kurt. I have an old schwinn prelude frame with a cracked top tube and happens to be too big. Thought I may start by pulling out the tt and seat tube. The lugs are in good shape so the restoration seems reasonable and a little less expensive. Would the fixturing work for that?

D n L said...

you wouldnt need a fixture for that. un-brazing a lug is not easy. i would cut out the tube then grind out the remaining tube from the lug. frame repair is an art in itself.

Kurt said...

Thanks for the advice. Maybe I should attempt the fix to gain experience brazing first with minimal investment.

D n L said...

yes that is the way to go. i hacked up a couple frames before i tried anything worthwhile.

Kurt said...

Do you still have the fixtures you mentioned earlier? If so, how much. I may be interested.