Bicycle Mechanics - Problem fitting Shimano brakes/gears

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.



PDA
antharrison
07-15-06, 03:05 AM
I am trying to fit Shimano SIS components to a frame I bought on eBay.

I have a problem - the front brake caliper is fouling the fixing for the rear gear shifter (which is located towards the bottom of the head tube - on my other bike this fixing is on the down tube)

I wonder if I have made a mistake - maybe my frame is Campag only?

Any help would be appreciated.

Thank you.

HillRider
07-15-06, 05:38 AM
If I understand your problem the braze-on cable housing anchor on the headtube for the rear derailleur cable is interferring with the front brake caliper. Sounds very odd and I don't think Campagnolo brakes will be any better. It does sounds like the anchor was installed in the wrong place.

Try installing a spacer washer on the brake mounting bolt between the front of the fork crown and the rear of the caliper.
Ray Dockrey
07-15-06, 11:52 AM
I saw a bike this way the other day somewhere on the net. The down tube stops where mounted on the head tube. Hopefully somebody who has this configuration will chime in and give you some help.

Retro Grouch
07-15-06, 01:23 PM
It sounds to me like you are trying to fit a front brake that has a nutted mounting bolt on a frame that was designed for a recessed brake bolt.
HillRider
07-15-06, 03:02 PM
I saw a bike this way the other day somewhere on the net. The down tube stops where mounted on the head tube. Hopefully somebody who has this configuration will chime in and give you some help.
This configuration has become extremely common on mid to high level road bikes ever since STI/Ergo pretty much blew away downtube shifters and the need for downtube mounted shifter bosses. It keeps the cable housing from rubbing on the sides of the head tube and allows slightly shorter housing runs.

My new Litespeed has the cable stops mounted this way and there is absolutely no problems with the cable runs or brake interference. I still think the fitting was mounted wrong or we don't have a clear pcture of what is going on.
HillRider
07-15-06, 03:08 PM
It sounds to me like you are trying to fit a front brake that has a nutted mounting bolt on a frame that was designed for a recessed brake bolt.
Interesting point. The OP said the "caliper" is interferring with the cable housing stop but maybe it is the rear of a nutted brake bolt. I further expect the fork is intended for a recessed nut so the brake mounting wouldn't be properly secure if it's a nutted version.