Results 1 to 8 of 8
  1. #1
    What the what???
    Reputation: Opus51569's Avatar
    Join Date
    Jul 2009
    Posts
    7,665

    Apex 1 rear derailleur wobble

    I'm new to 1X... heck, I'm new to 11sp... so apologies in advance if this is "normal". I attempted to find the SRAM manual for this but had no joy.

    I have an 11sp, SRAM Apex 1 rear derailleur. With the derailleur de-tensioned (shifted to the small cog, and with the chain off the bike), the derailleur has a fair amount of wobble/play (inboard and outboard). It feels loose. But the bolt attaching it to the hanger is good and tight and the hanger itself is tight to the frame.

    Is this wobble/play built in to provide some flexibility to aid in shifting since it's a 1X system?

    If not, any ideas what the proper torque should be for the derailleur bolt attaching to the hanger?
    Last edited by Opus51569; 03-16-2017 at 05:17 PM.
    Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity. - MLK

  2. #2
    'brifter' is a lame word.
    Reputation: cxwrench's Avatar
    Join Date
    Nov 2004
    Posts
    11,463
    Normal. SRAM recommends 5-7nm. There user manuals and service manuals are very easy to find on their site. Service tab right at the top. Grease the threads when you install it.
    I work for some bike racers
    I've got some bikes, some guns,
    and a bunch of skateboards

  3. #3
    What the what???
    Reputation: Opus51569's Avatar
    Join Date
    Jul 2009
    Posts
    7,665
    Quote Originally Posted by cxwrench View Post
    Normal. SRAM recommends 5-7nm. There user manuals and service manuals are very easy to find on their site. Service tab right at the top. Grease the threads when you install it.
    Yeah. Their site has diagrams, but I couldn't find anything for installation or adjustments on the Apex 1X to tell me if the inboard/outboard play was normal.

    So, it's by design?
    Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity. - MLK

  4. #4
    'brifter' is a lame word.
    Reputation: cxwrench's Avatar
    Join Date
    Nov 2004
    Posts
    11,463
    There is nothing about the movement. It just happens. The torque for the attachment bolt is clearly shown as is the need to grease it so you get the proper torque. Don't overthink this.
    I work for some bike racers
    I've got some bikes, some guns,
    and a bunch of skateboards

  5. #5
    wim
    wim is offline
    RoadBikeReview Member
    Reputation:
    Join Date
    Feb 2005
    Posts
    11,436
    Agree with cxwrench, it's normal. There has to be some play in that pivot to guarantee free movement of the derailleur no matter how tight the mounting bolt. The play becomes negligible when putting tension into the coil spring housed in that pivot and when the derailleur cage with the chain in it can stabilize the derailleur. Putting the chain back on your bike will do all that.

  6. #6
    What the what???
    Reputation: Opus51569's Avatar
    Join Date
    Jul 2009
    Posts
    7,665
    Thanks to you both. I'll resist the "fix it till it's broken" part of me that wanted to throw a washer in there, and I'll leave it as-is.
    Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity. - MLK

  7. #7
    'brifter' is a lame word.
    Reputation: cxwrench's Avatar
    Join Date
    Nov 2004
    Posts
    11,463
    Quote Originally Posted by Opus51569 View Post
    Thanks to you both. I'll resist the "fix it till it's broken" part of me that wanted to throw a washer in there, and I'll leave it as-is.
    You should never attempt to out-engineer Shimano, SRAM, or Campy. They pretty much know what they're doing.
    I work for some bike racers
    I've got some bikes, some guns,
    and a bunch of skateboards

  8. #8
    What the what???
    Reputation: Opus51569's Avatar
    Join Date
    Jul 2009
    Posts
    7,665
    I didn't think it was poor engineering, just maybe a QC issue.
    Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity. - MLK

Similar Threads

  1. wobble in DA 7850 rear hub
    By steelbikerider in forum Components, Wrenching
    Replies: 1
    Last Post: 01-15-2016, 06:52 AM
  2. Rear Derailleur (Apex) Barrel Adjuster Question
    By RaptorTC in forum Components, Wrenching
    Replies: 3
    Last Post: 05-31-2013, 06:10 PM
  3. SRAM Apex Rear Derailleur issues on CX bike
    By drussell in forum Cyclocross
    Replies: 15
    Last Post: 05-06-2013, 12:46 PM
  4. SRAM Apex Rear Derailleur: Low Limit Screw Affecting High Limit
    By quasi888 in forum Components, Wrenching
    Replies: 4
    Last Post: 06-29-2011, 06:18 AM
  5. Replies: 8
    Last Post: 06-07-2011, 04:12 AM

Posting Permissions

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