Disc Brake Questions
#1
Senior Member
Thread Starter
Join Date: Dec 2011
Location: NE Ohio
Posts: 2,576
Bikes: 1992 Serotta Colorado II,Co-Motion Speedster, Giant Escape Hybrid, 1977 Schwinn Super Le Tour
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 448 Post(s)
Likes: 0
Liked 112 Times
in
85 Posts
Disc Brake Questions
Still a newbie here but wanting to learn more about the disc brakes on our Co-Motion Speedster.
While riding today the thought crossed my mind, "How do you know when to replace the rotors?"
And in the Tandem@Hobbes email, which I cannot figure out how to post to, the discussion was about rear discs. They made mention of "travel multiplier and travel agents? What are these items?
Thanks
While riding today the thought crossed my mind, "How do you know when to replace the rotors?"
And in the Tandem@Hobbes email, which I cannot figure out how to post to, the discussion was about rear discs. They made mention of "travel multiplier and travel agents? What are these items?
Thanks
#2
Senior Member
Join Date: Feb 2012
Location: PDX!
Posts: 281
Bikes: Custom Single, factory fixed, Cannondale RT2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
The travel multiplier / agent is a in-line adapter which (through the use of leaver & fulcrum) boosts your breaking power. you don't really need one with full disk all around.
#3
hors category
Join Date: Jan 2002
Posts: 7,231
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Likes: 0
Liked 5 Times
in
5 Posts
You can find all kinds of information in the BikeForums archives using a Google search string, including "travel agents". Just use a search string that starts with " site:bikeforums.net " and then add your search terms. For travel agents I'd use something like " tandems travel agent brakes".
This post is an example of what you'll find: https://www.bikeforums.net/showthread...e-Travel-Agent
Hobbes is a Listserver, which means you need to subscribe via Email. All postings are made / received via Email. More information at my Website or the Hobbes information pages. Just Google on "Tandem@Hobbes subscribe" or words to that affect.
#4
Senior Member
Join Date: May 2008
Location: Royal Palm Beach, Florida
Posts: 1,236
Bikes: 2006 Co-Motion Roadster (Flat Bars, Discs, Carbon Fork), Some 1/2 bikes and a couple of KTM's
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 28 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
TG, your info on pad replacement thickness is text book.
From experience, (several times to admit being stupid), the disc pads will not wear to the Avid stated minimum thickness and still stop. At about .1mm above minimum thickness, maybe slightly less than .1mm, the spring clip, which also is a squeal device, will become your friction surface.
The bike will not stop when this spring clip is used as a brake pad. Jeanne got a wild ride as we totally blew an off camber turn on the Fandango MTB tandem, while training earlier this year. Suffice to say she was pretty irked about us going 15 or so feet off the trail before I got the bike turned back up the hill. A two minute team meeting about why we had to end our ride early did not settle well either.
In summary, if you have brake pad rub that seems to never subside, regardless of how well you adjust the pads, you might want to measure and / or replace the pads. The noise you hear is the spring clip tips "talking" to you.
PK
From experience, (several times to admit being stupid), the disc pads will not wear to the Avid stated minimum thickness and still stop. At about .1mm above minimum thickness, maybe slightly less than .1mm, the spring clip, which also is a squeal device, will become your friction surface.
The bike will not stop when this spring clip is used as a brake pad. Jeanne got a wild ride as we totally blew an off camber turn on the Fandango MTB tandem, while training earlier this year. Suffice to say she was pretty irked about us going 15 or so feet off the trail before I got the bike turned back up the hill. A two minute team meeting about why we had to end our ride early did not settle well either.
In summary, if you have brake pad rub that seems to never subside, regardless of how well you adjust the pads, you might want to measure and / or replace the pads. The noise you hear is the spring clip tips "talking" to you.
PK
Thread
Thread Starter
Forum
Replies
Last Post
ColonelSanders
Bicycle Mechanics
14
12-20-16 05:36 PM