Results 1 to 3 of 3
  1. #1
    mtbr member
    Reputation:
    Join Date
    Jan 2014
    Posts
    35

    A little help needed mounting rear p to p adapter for shimano 180 mm rotor

    I got the new rotor and the adapter just a little confused on which direction to mount the adapter. should the larger spacer be on the front or rear post. Thanks! If anyone could post a pic that would really help!

  2. #2
    rebmem rbtm
    Reputation:
    Join Date
    Apr 2007
    Posts
    3,130
    http://techdocs.shimano.com/media/te...9830667774.PDF

    The arrow on the adapter always points in the direction that the wheel/rotor spins when you ride the bike.

  3. #3
    mtbr member
    Reputation:
    Join Date
    Jul 2004
    Posts
    1,108
    Aside from reading that arrow correctly, the reason you put the cone/cup spacer is to allow bolts to sit straight into the brake mount post even with slight angle introduced by your 60-to-80 mm adapter which changes the angle of the brake caliper in relation to your fork/mount. If you, for example, use these spacers between the post and adapter or caliper, then your bolt would sit directly on angular contact surface of the caliper - that can potentially snap/crack the post by applying perpendicular force to the post.

    So, it's very important to follow the direction in this particular instance.

Similar Threads

  1. which Shimano lockring for rotor adapter
    By teachndad in forum 29er Components
    Replies: 0
    Last Post: 09-06-2012, 01:36 PM
  2. Shimano rotor mounting hardware
    By JonathanGennick in forum Brake Time
    Replies: 7
    Last Post: 08-12-2012, 01:49 PM
  3. rear rotor adapter on a HD?
    By slideways666 in forum Ibis
    Replies: 2
    Last Post: 04-26-2012, 10:14 PM
  4. Adapter needed for 160mm rotor in front?
    By fskywalker in forum General Discussion
    Replies: 2
    Last Post: 04-06-2012, 03:14 PM
  5. Replies: 2
    Last Post: 08-17-2011, 04:22 PM

Posting Permissions

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