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  1. #1
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    Shim under rotor - or caliper mount.

    I am having some troubles fine tuning my Avid Ultimates once I changed rear rotor to 140mm G3. It seems I need to either place some shims under the rotor - or some washers between the rear caliper mount and frame. I am using the front 160 adapter mounted backwards in the rear, and is seems aligned fine, but at the edge of its range. It was easy to adjust with 160 G2 it came with on the same frame/hub/caliper...

    What is a better place to shim in this case - under rotor, or under caliper mount to bring it closer to the rotor? What is the common wisdom? I have never had to do that previously... I wonder if I did something else wrong, of if the adapter that was in the bag is somehow a wrong once (I mounted fron on posts...) Not too many options..

  2. #2
    Nightriding rules SuperModerator
    Reputation: crisillo's Avatar
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    Quote Originally Posted by Curmy
    I am using the front 160 adapter mounted backwards in the rear, and is seems aligned fine, but at the edge of its range. It was easy to adjust with 160 G2 it came with on the same frame/hub/caliper...
    what do you mean by "mounted backwards"?

    the front IS 160mm adapter, will work for a 140mm in the rear installed in the same direction as in the front.....

  3. #3
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    under the caliper works on my bikes just fine

  4. #4
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    Quote Originally Posted by mtb441
    under the caliper works on my bikes just fine
    Yeah, I have added a couple of washers under caliper mount, and it seems good enough.

    I want to find the "forged" style avid mount instead... Later..

  5. #5
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    Either is fine - easier to mount between the caliper

  6. #6
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    Quote Originally Posted by crisillo
    what do you mean by "mounted backwards"?

    the front IS 160mm adapter, will work for a 140mm in the rear installed in the same direction as in the front.....

    I guess you are right. All my forks at the moment have a post mount, so it seemed to me for a second that it was running in the opposite direction for some reason. I was wrong.

  7. #7
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    hmmmm


  8. #8
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    Quote Originally Posted by Spindelatron

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