Bike and Cycling Forum > Bike Forums > General Bike Discussion > MTB to Road brake conversion


Reply
 
LinkBack Thread Tools Display Modes
Old 09-11-2010, 07:00 AM   #1
zenloki
Junior Member
 
Join Date: Sep 2010
Posts: 18
MTB to Road brake conversion

About 5 years ago, I put drop bars, bar ends and appropriate shifters on a Cannondale Caad2 MTB. Kept the Avid cantilever brakes. While the front brake was perfect the rear was mushy in the extreme. I used aero brake levers (Shimanos?) designed for this but was less than impressed with the results in the rear. Need to have better mechanical advantage at the lever or change the brakes. Anyone else do something similar or have suggestions on how to get a decent back brake out of this set-up?



__________________
zenloki is offline  
 
Reply With Quote Quick reply to this message
Old 09-17-2010, 04:53 AM   #2
zenloki
Junior Member
 
Join Date: Sep 2010
Posts: 18

53 views and not one idea?



__________________
zenloki is offline  
 
Reply With Quote Quick reply to this message
Old 10-27-2010, 11:11 PM   #3
zenloki
Junior Member
 
Join Date: Sep 2010
Posts: 18

93 views, still not one idea. i'm saddened and disheartened.

__________________
zenloki is offline  
 
Reply With Quote Quick reply to this message
Old 10-28-2010, 12:38 AM   #4
speedfan
speedfan
 
speedfan's Avatar
Bikes
 
Join Date: Jun 2010
Posts: 53
questions

Are the pads up to par? Can the travel of levers be shortened? No great ideas, just trying to understand for myself why there is a different feel.

__________________

A viler evil than to murder a man, is to sell him suicide as an act of virtue.

speedfan is offline  
 
Reply With Quote Quick reply to this message
Old 10-28-2010, 12:54 AM   #5
zenloki
Junior Member
 
Join Date: Sep 2010
Posts: 18
thanks speedfan!

the pads are/were new so definitely up to the task. cables were new also.
don't know how i could shorten the lever travel.

the feel of the rear brake is mush as originally posted. i squeeze and it just feels soft all the way to the bar with some slight braking action. not enough to make me feel secure riding aggressively through city traffic. its like i don't have a sufficient mechanical advantage to get a good squeeze on the back rim. I installed Shimano Tiagra Aero levers which have (according to the late Sheldon Harris) the best mechanical advantage available and what Harris Cyclery suggested for my application.

any thoughts?

__________________
zenloki is offline  
 
Reply With Quote Quick reply to this message
Old 10-28-2010, 01:23 AM   #6
BlazingPedals
Senior Member
Bikes
 
Join Date: Dec 2009
Posts: 332
Liked 40 Times on 26 Posts

I'm not well-versed on cantis, but can you shorten up the length of the hanger cable, or whatever you call it? That might give you more pad movement for a given lever travel.

__________________
BlazingPedals is offline  
 
Reply With Quote Quick reply to this message
Old 10-28-2010, 03:02 AM   #7
Industry_Hack
Total noob (& forum admin)
TS_ADMIN.png
 
Industry_Hack's Avatar
Bikes
 
Join Date: Aug 2009
Posts: 11,075
Liked 3482 Times on 2029 Posts
Likes Given: 3433

There used to be some little gizmos for this sort of situation. BRB, I gotta Google.

Industry_Hack is offline  
 
Reply With Quote Quick reply to this message
Old 10-28-2010, 03:03 AM   #8
Industry_Hack
Total noob (& forum admin)
TS_ADMIN.png
 
Industry_Hack's Avatar
Bikes
 
Join Date: Aug 2009
Posts: 11,075
Liked 3482 Times on 2029 Posts
Likes Given: 3433

Damn, I'm fast. Problem Solvers.

__________________
IndustryOutsider.com - cycling and outdoor stuff.
Interbike 2008 photos | Interbike 2009 photos | Interbike2012 photos

The Twospoke store for shirts and stuff.
Industry_Hack is offline  
 
Reply With Quote Quick reply to this message
Old 10-28-2010, 07:54 PM   #9
Mootsguy
A Red Headed Stepchild
 
Mootsguy's Avatar
Bikes
 
Join Date: Nov 2009
Posts: 164

Wasn't the little doo-hickey called a travel agent? I used them so that I could use some Grafton canti brake levers with linear pull brakes and they worked to perfection.

__________________

“I recommend bread, meat, vegetables, and beer.” – Sophocles

Dopers suck!

Mootsguy is offline  
 
Reply With Quote Quick reply to this message
Old 10-28-2010, 09:24 PM   #10
LarryM
Eocyclist
 
LarryM's Avatar
Bikes
 
Join Date: Jul 2009
Posts: 568
Liked 289 Times on 140 Posts
Likes Given: 390

Try to decrease the yoke angle - ( get the yoke cable close to the tire) See http://sheldonbrown.com/cantilever-geometry.html#mechanical for why yoke angle is important in getting the best mechanical advantage on cantilever brakes.

Also, consider trying a softer pad, like Kool Stop Salmon brake pads.

Those two changes made a world of difference in the Tektro cantis on my LHT



__________________

Last edited by LarryM; 10-28-2010 at 09:27 PM.
LarryM is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Need help finding conversion kit, please AngieM General Bike Discussion 5 11-01-2010 05:19 PM
How do I run brake housing with aero brake levers, the cable runs from underneath?? fujiyama General Bike Discussion 0 05-30-2010 04:21 PM
Moped Conversion? bikermandan General Bike Discussion 18 12-31-2009 12:28 AM
Disc Brake Conversion Louie4 Beginners Forum 14 12-13-2009 09:22 PM
Tire Conversion Farnsworth Fixed & Singlespeed 2 12-03-2009 09:36 PM