Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Senior Member Jason Curtiss's Avatar
    Join Date
    Jul 2005
    Location
    Houston, Texas
    My Bikes
    Fuji Roubaix LE
    Posts
    124
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Why Different Brake Cable Routing Systems?

    Why are there two different rear brake cable arrangements? My Schwinn Voyageur has two cable stops at each end of the top tube for the rear brake cable. The cable housing terminates at these stops with the naked cable running between them. This is a clean, neat arrangement with no apparent disadvantages.

    On the other hand, my Bianchi has three small “tunnels” that are brazed to the top tube. The rear cable complete with housing runs right through these tunnels and terminates at the caliper and at the brake lever. The problem with this tunnel method is corrosion. Sweat, water or whatever becomes trapped between the cable housing and top tube causing rust in fairly short order. The simple cable stop method on my Voyageur has no such corrosion problems.

    So, why do some bikes have the seemingly inferior tunnel method of routing the rear brake cable?

    Jason

  2. #2
    Senior Member sydney's Avatar
    Join Date
    Jan 2004
    Posts
    9,428
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Jason Curtiss
    Why are there two different rear brake cable arrangements? My Schwinn Voyageur has two cable stops at each end of the top tube for the rear brake cable. The cable housing terminates at these stops with the naked cable running between them. This is a clean, neat arrangement with no apparent disadvantages.

    On the other hand, my Bianchi has three small “tunnels” that are brazed to the top tube. The rear cable complete with housing runs right through these tunnels and terminates at the caliper and at the brake lever. The problem with this tunnel method is corrosion. Sweat, water or whatever becomes trapped between the cable housing and top tube causing rust in fairly short order. The simple cable stop method on my Voyageur has no such corrosion problems.

    So, why do some bikes have the seemingly inferior tunnel method of routing the rear brake cable?

    Jason
    The Bianchi is the 'old' or traditional way. There is also internal routing. Just different ways of skinning the cat.

  3. #3
    Senior Member
    Join Date
    Feb 2001
    Location
    England
    Posts
    12,248
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    If you ride in all weather and dont like maintenance, then full-length housing will protect the cable better.
    Exposed cable is more responsive but the exposed ends of the outer provide a path for mud and dirt to enter.
    You can protect the frame from corrosion by applying some car wax.

  4. #4
    Senior Member capwater's Avatar
    Join Date
    Dec 2004
    Location
    Quahog, RI
    My Bikes
    Giant TCR Comps, Cdale R5000, Klein Q-Pro, Litespeed Siena, Piasano 105, Redline Conquest Pro, Voodoo Bizango, Fuji Aloha
    Posts
    1,509
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I would also tend to think that the exposed or internal routing, since it has less covering housing, would have less resistance and thus more responsive braking.

  5. #5
    cyclist/gearhead/cycli... moxfyre's Avatar
    Join Date
    Oct 2004
    Location
    DC / Maryland suburbs
    My Bikes
    Homebuilt tourer/commuter, modified-beyond-recognition 1990 Trek 1100, reasonably stock 2002-ish Gary Fisher Hoo Koo E Koo
    Posts
    4,172
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Jason Curtiss
    Why are there two different rear brake cable arrangements? My Schwinn Voyageur has two cable stops at each end of the top tube for the rear brake cable. The cable housing terminates at these stops with the naked cable running between them. This is a clean, neat arrangement with no apparent disadvantages.

    On the other hand, my Bianchi has three small “tunnels” that are brazed to the top tube. The rear cable complete with housing runs right through these tunnels and terminates at the caliper and at the brake lever. The problem with this tunnel method is corrosion. Sweat, water or whatever becomes trapped between the cable housing and top tube causing rust in fairly short order. The simple cable stop method on my Voyageur has no such corrosion problems.

    So, why do some bikes have the seemingly inferior tunnel method of routing the rear brake cable?

    Jason
    I'm not sure that the "tunnel" (traditional) method is much inferior. There is perhaps slightly more cable drag because of the longer housing, but on the other hand there are fewer places for dirt and water to get inside the housing: one end of the housing is under the brake lever hood, and the other end is normally right up against the adjuster barrel on the brake.

    I have never been able to feel a perceptible difference in the brakes between the old/new cable routing styles...
    My bikes | Linux and Python stuff | Photo gallery

    Sheldon Brown, I miss you. Thanks for the advice, ideas, humor, and infectious enthusiasm for everything bikes...

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •