Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Can regular cantilever brakes be used on frames intended for roller cam or U-brakes?

Notices
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.

Can regular cantilever brakes be used on frames intended for roller cam or U-brakes?

Old 01-06-15, 03:37 PM
  #1  
Yung Piss
Member
Thread Starter
 
Join Date: Jun 2010
Location: NYC
Posts: 46
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Can regular cantilever brakes be used on frames intended for roller cam or U-brakes?

Considering building up vintage Cannondale SM frame from late 80s/early 90s. I know these frames were spec'd with roller cam brakes and later U-brakes. I don't know much about this area of bikes. My question is could I use a set modern of cantilever brakes on the bosses on this frame or are the bosses different in some way? Any help would be appreciated
Yung Piss is offline  
Old 01-06-15, 03:47 PM
  #2  
dabac
Senior Member
 
Join Date: Mar 2008
Posts: 8,688
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 1073 Post(s)
Liked 291 Times in 218 Posts
U-brakes use another boss mount spec than canti/V-brakes AFAIK. Try to measure and compare.
dabac is offline  
Old 01-06-15, 03:50 PM
  #3  
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 36,534

Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

Mentioned: 130 Post(s)
Tagged: 1 Thread(s)
Quoted: 4648 Post(s)
Likes: 0
Liked 567 Times in 363 Posts
No because the bosses are in different places with respect to the rim

With Canti (and V-brakes) the boss in below the rim (toward the hub) and the shoe is above the boss.
With U-brakes (or similar) the boss is outside the rim, and shoe below.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is offline  
Old 01-06-15, 04:30 PM
  #4  
LesterOfPuppets
cowboy, steel horse, etc
 
LesterOfPuppets's Avatar
 
Join Date: Sep 2008
Location: Valley of the Sun.
Posts: 40,176

Bikes: everywhere

Mentioned: 70 Post(s)
Tagged: 1 Thread(s)
Quoted: 9505 Post(s)
Liked 4,448 Times in 2,338 Posts
If you have one with the 24" rear wheel, maybe you could put a 26" with a skinny road tire in there and fit cantis, but that's a big shot in the dark. Then of course, swap out the fork for one with canti studs.

Sounds like more work than sourcing a decent U-brake, though, and I'd guess a low probability of working out.
LesterOfPuppets is offline  
Old 01-06-15, 04:37 PM
  #5  
fietsbob
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,599

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,339 Times in 847 Posts
& for the BMX market there are abundant cheap U brakes .. they will fit.


(or ignore the brake studs and build Drum brake Hub wheels.
fietsbob is offline  
Old 01-07-15, 12:17 PM
  #6  
Airburst
Senior Member
 
Join Date: Oct 2009
Location: England, currently dividing my time between university in Guildford and home just outside Reading
Posts: 1,921

Bikes: Too many to list here!

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 4 Times in 2 Posts
Originally Posted by fietsbob View Post
& for the BMX market there are abundant cheap U brakes .. they will fit.


(or ignore the brake studs and build Drum brake Hub wheels.
Either of these options would be my suggestion. U-brakes are available for any price point thanks to the BMX market - you can get cheap ones or really blingy lightweight ones depending how much you're willing to pay, and in my experience a lot of BMXers sell theirs on eBay after they switch to riding brakeless, so you might get lucky and score some really nice ones cheaply.

You can't even get cantilever brakes onto U-brake bosses, as the U-brake ones are about 2mm larger in diameter. I once tried to use U-brakes on the canti bosses of a 26" frame to work with 20" wheels, and the hole in the U-brakes was a lot bigger than the bosses.
Airburst is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dksix
Classic & Vintage
14
04-16-18 09:29 AM
Henry III
Classic & Vintage
26
01-19-15 07:52 PM
AST236
Bicycle Mechanics
5
06-15-14 08:58 AM
Barrettscv
Classic & Vintage
4
10-04-13 09:53 AM
dashuaigeh
Classic & Vintage
3
10-10-10 09:20 PM

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2022 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.