Originally Posted by
superhotbug
the lugs that would have a different angle going from a small to big frame would be the down tube lugs, going from the bottom of the steerer tube to the front of the bottom bracket, if your lugs are tight, they may be hard to adjust at these areas. Older bonded frames used to fail due to the frames being under strain from the set angled lugs (alan, graftek)
Exactly.
So how does one solve this problem so that larger frames don't end up with steeper seat/head tube angles? Is bending the DT/BB and DT/HT lugs the standard way of solving it? If so, is this done with cold-setting or is it done while the lugs are warm?
Also, if I'm asking a question that is answered in a good framebuilding book/reference, I'd love to know where to look for more information on this bit of frame construction.
cheers!
b