Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-01-08, 04:19 AM   #1
chris101
another member
Thread Starter
 
Join Date: Aug 2008
Location: near Stoke-on-Trent, U.K.
Bikes:
Posts: 10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Fitting new Shimano Ultegra Brake to 1980's Raleigh

Hi,

I'm in the process of 'modernising' my old Raleigh Pulsar, probably considered a waste of time to most people but the bike has huge sentimental value, and I've started using it again as a commute bike. Anyway, the old brake callipers were pretty useless so I bought a pair of Shimano Ultegra brakes. On attempting to fit them I've realised that the new brakes seem to use a recessed nut, unlike the old brakes which used an exposed retaining/fixing nut. The hole in the front forks is too narrow to accommodate the new nut so I've reamed the rear of the hole so that the nut is a very snug fit, however I'm unsure as to what length nut I should really be using, the standard (10mm) nut only winds onto the pivot bolt threads by about 2.5mm. To keep things 'safe' should I try and locate the longest nut that will fit, like 18mm?

Thanks for any guidance offered!

Chris
chris101 is offline   Reply With Quote
Old 08-01-08, 07:43 AM   #2
bikeman715
Senior Member
 
bikeman715's Avatar
 
Join Date: Mar 2008
Location: Salinas , Ca.
Bikes: Bike Nashbar AL-1 ,Raligh M50 , Schwinn Traveler , and others
Posts: 2,447
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
ream out the hole a little bigger so the recessed nut fit well and turn will out griding in the hole. now for the rear brake it best to get another front brake to work with the bridge on the frame. the longer bolt will go though the hole and allow you to use hardware to fasten it.
bikeman715 is offline   Reply With Quote
Old 08-01-08, 07:55 AM   #3
chris101
another member
Thread Starter
 
Join Date: Aug 2008
Location: near Stoke-on-Trent, U.K.
Bikes:
Posts: 10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
So the pivot bolt for the new rear caliper is going to be too long then? The mounting tube (the bridge?) is only 13mm wide.

Many thanks.
chris101 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 11:48 PM.