Avid Mech Disc Brake Tuning- Mtbr.com
Results 1 to 4 of 4
  1. #1
    Candlestick Maker
    Reputation: baker's Avatar
    Join Date
    Jan 2004
    Posts
    2,880

    Avid Mech Disc Brake Tuning

    Anyone reading this have experience with lightening the
    Avid Mech brakes thru bolt tuning? There are 5 significant
    bolts that could be replaced and even then the weight
    savings would be minimal (~12g per brake given the following
    bolts).

    Cable fixing bolt - alloy m6x10 bolt
    2 frame mounting bolts - Ti m6x15. Do these need to be Ti?
    2 caliper mounting bolts - Ti m6x25. Do these need to be Ti?

    Thanks for any input/experience...

    baker

  2. #2
    Te mortuo heres tibi sim?
    Reputation: scrublover's Avatar
    Join Date
    Dec 2003
    Posts
    8,846

    i've done it.

    all frame mount bolts swapped to ti. front cps bolts ar ti, and the rear are alu. also swapped out the caliper body bolts for alu ones; they take a different torx wrench to get out though, because of the little nub inside the bolt head. i broke those off with a small centerpunch, then used the rotor mount bolt torx wrench on 'em. rotor bolts are half original, half ti-front and half alu rear. alu on the rear cable clamp bolt. i think all the weight i save was regained by going to a 185mm rotor in front! stuck with ti on most of the front bolts, since you're putting much more stress on the front braking system, as a general rule. esp. with a larger rotor.

    paired with some paul levers, with alu clamp bolts, and good cables.... makes for one sweet feeling set of brakes. no slop in the system at all, and modulates extremely well. love my avids!

    though the steel hardtail with 5" fork they are on pushes 27pounds.......

    no idea on the total weight shaved. i'd not use anything but ti on the frame mount bolts. alu on the rear cps bolts seems to be ok, but i'd stick with ti on the front. no problems at all so far. same setup on two bikes, one about a year, the other going on two years.
    here's one of the bikes, the lighter of the two, at 22# even.

    http://forums.mtbr.com/showthread.php?t=846
    Florence Nightingale's Stormtrooper

  3. #3
    Candlestick Maker
    Reputation: baker's Avatar
    Join Date
    Jan 2004
    Posts
    2,880
    Thanks for the info scrublover. Good to know that the rear alu cps bolts
    have held up ok. Good idea on the torx bolts, too. I wasn't going to
    bother with them, but your idea sounds fairly easy to implement.

    baker

  4. #4
    the Truth will set u free
    Reputation: AndyH's Avatar
    Join Date
    Dec 2003
    Posts
    71

    Sounds like a security Torx bolt...

    Quote Originally Posted by scrublover
    also swapped out the caliper body bolts for alu ones; they take a different torx wrench to get out though, because of the little nub inside the bolt head. i broke those off with a small centerpunch, then used the rotor mount bolt torx wrench on 'em.
    Sounds like a security Torx bolt, they make Torx screwdriver's and bits that will remove these without the need to resort to using a centerpunch.

    Security Torx bit:
    2001 Ellsworth Truth

Similar Threads

  1. Need disc brake adapter 74mm to 51mm
    By DIYguy in forum Brake Time
    Replies: 3
    Last Post: 01-26-2004, 10:15 AM
  2. Avid Mech chirping sound help?
    By Murchman in forum Brake Time
    Replies: 3
    Last Post: 01-20-2004, 09:11 PM
  3. Replies: 8
    Last Post: 01-20-2004, 03:20 PM
  4. dumping avid vee's for mech!! more!
    By KamikazeBikr in forum Brake Time
    Replies: 6
    Last Post: 01-20-2004, 12:35 PM
  5. Need disc brake adapter for manitou 74mm to 51mm
    By DIYguy in forum Shocks and Suspension
    Replies: 1
    Last Post: 01-18-2004, 08:05 PM

Members who have read this thread: 0

Posting Permissions

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

THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2019 VerticalScope Inc. All rights reserved.