Originally Posted by
CliffordK
In
asmac's case, the downtube is under tension (some framebuilders simply use a cable rather than a tube), although it will experience some lateral torsion. Assuming a rather mild dent, and not bent tube, then
FBinNY's advice to leave alone would be appropriate. Perhaps check the frame alignment before investing a lot of money in the project.
Thank you, that makes sense and is what I needed to know.
I find it hard to visualize these things and will avoid building any bridges.