Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Flying Pig rolliepollie's Avatar
    Join Date
    Oct 2005
    Location
    San Francisco, CA
    My Bikes
    06 Specialized Allez Sport, '10 Trek Fuel EX 7
    Posts
    319
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Juicy 3.5 disc pad gone bad???

    Hi all,

    My new Trek Fuel EX from last year came with Avid Juicy 3.5 discs, and while the rear locks up fine, the front is just weak the first 5-10 min; initially takes 2-finger braking with only the front brake almost at max strength, going down ~20% grade. I've only ridden it under 50 or so miles (slacked off majorly since getting a job), so it's been sitting in the garage for months.

    Below are pics of the pads and rotor. I'm wondering if it's "glazed"? It's seen rain and mud, so maybe oils got in? Also, the bottom pad (and top one, to a lesser extent) seems like only about half are in contact with the rotor, judging by the darker patch.

    I'd like some feedback before trying sanding it and cleaning with alcohol. If new pads are required, do I need a new rotor?
    Attached Images Attached Images
    Life is a canvas drawn by experience, composed through ambition, and envisioned by dreams.

  2. #2
    Senior Member
    Join Date
    Sep 2004
    Location
    boston, ma
    Posts
    2,828
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    looks like i see a black streak right through the center track of the rotor. an indication of contamination. if you need new pads just clean the rotor with alcohol. how is the lever feel on the front. spongy or firm. it is much easier to lock out and skid the rear. to skid or lockout the front you will basically be on your way to a crash.

  3. #3
    Flying Pig rolliepollie's Avatar
    Join Date
    Oct 2005
    Location
    San Francisco, CA
    My Bikes
    06 Specialized Allez Sport, '10 Trek Fuel EX 7
    Posts
    319
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by reptilezs View Post
    looks like i see a black streak right through the center track of the rotor. an indication of contamination. if you need new pads just clean the rotor with alcohol. how is the lever feel on the front. spongy or firm. it is much easier to lock out and skid the rear. to skid or lockout the front you will basically be on your way to a crash.
    Hey, didn't notice that streak! The lever is pretty firm, like the rear. It seems much easier to lock the rear, with much more "punch" when I brake with 1 finger.

    So I should probably replace the pads, then? I can't even lock the front while the bike is sitting still, with me putting weight on a pedal horizontally.
    Life is a canvas drawn by experience, composed through ambition, and envisioned by dreams.

  4. #4
    Senior Member
    Join Date
    Sep 2004
    Location
    boston, ma
    Posts
    2,828
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    if you can still move the bike while applying the brake on the ground then its time for new pads. i dont bother with trying to clean them or burning them. clean the rotor thoroughly before putting on the new pads. give the new pads a few rides to break and bed in.

  5. #5
    Flying Pig rolliepollie's Avatar
    Join Date
    Oct 2005
    Location
    San Francisco, CA
    My Bikes
    06 Specialized Allez Sport, '10 Trek Fuel EX 7
    Posts
    319
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I went ahead and replaced the pads for $20 - didn't feel like risking overbaking and affecting the glue. However, the old ones when dissassembled and sandwiched together, there is a tiny gap in the middle so the pads didn't seems to be flat and even on the rotor. Seemed like guesswork so didn't bother fixing them.
    Life is a canvas drawn by experience, composed through ambition, and envisioned by dreams.

Posting Permissions

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