Originally Posted by
JaccoW
I tried the one from RJ the bike guy as well today and it worked... somewhat.
Happy it worked for you! Even though that you could't reach the desired spacing. Buckling is a real problem!
Originally Posted by
noglider
I used the threaded rod method for spreading my Super Course, and I got very asymmetrical results. Now I have to correct it.
The problem with this method is that you have no control over the deformation of chain and seat stays in relation to the symmetry plane of the bike bacause both dropouts are being spread at the same time. You will get appropriate results only when the left stays are equally stiff as the rights ones so they can all deform in the same way but in reality I guess it's almost never the case due to unequal brazing, material differences, tolerances and other variables. I could see this method working if some kind of a frame jig is used with a threaded rod attached to that jig so that each dropout could be spread separetely from each other.