D
Dave
Guest
Greetings All,
I have a 12 year old bike frame made from Columbus SL tubing that I am upgrading from 7 speed to 9
sped Ultegra components. Since my current rear dropout spacing is 126mm for the 7 speed hubs and the
9 speed hubs are spaced at 130mm, my questions are:
Do I need to have the rear dropouts widened to 130mm by a frame builder or is it OK to spread them
the additional 4mm when inserting the rear wheel?
If I didn't have them widened would there be a problem with the rear dropouts not being parallel and
placing stress on the rear axle?
Anyone have any idea how a frame shop would perform the widening and what damage could occur to
either the painted finish of the bike(still quite good) or the integrity of the steel?
Thanks in advance for any help in this matter.
Dave
I have a 12 year old bike frame made from Columbus SL tubing that I am upgrading from 7 speed to 9
sped Ultegra components. Since my current rear dropout spacing is 126mm for the 7 speed hubs and the
9 speed hubs are spaced at 130mm, my questions are:
Do I need to have the rear dropouts widened to 130mm by a frame builder or is it OK to spread them
the additional 4mm when inserting the rear wheel?
If I didn't have them widened would there be a problem with the rear dropouts not being parallel and
placing stress on the rear axle?
Anyone have any idea how a frame shop would perform the widening and what damage could occur to
either the painted finish of the bike(still quite good) or the integrity of the steel?
Thanks in advance for any help in this matter.
Dave