Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Can I use "middle" chainring as outer?

  • 11-02-2010 11:09am
    #1
    penexpers
    Closed Accounts Posts: 4,038 ✭✭✭


    Hey,

    I want to get a 36 or 38T chainring to use for an IGH system. The BCD of the cranks is 104mm and I can find a few chainrings that will fit this. Thing is, they are marked as being middle chainrings. Is there any issue with using these as outer chainings?

    Thanks.


Comments

  • #2
    cdaly_
    Registered Users, Registered Users 2 Posts: 6,440 ✭✭✭cdaly_


    I'd say the biggest issue would be if the middle ring is dished to accomodate the thickness of the crank spider. In that case, it would be offset too far if you fitted it to the outside of the crank.

    You would have to leave it in its expected orientation to allow the shift ramps to work correctly.


  • #3
    penexpers
    Closed Accounts Posts: 4,038 ✭✭✭penexpers


    .


  • #4
    ryan_sherlock
    Registered Users, Registered Users 2 Posts: 885 ✭✭✭ryan_sherlock


    Somewhat related - a post I put up about converting an XT tripple MTB crankset to a double.

    http://ryansherlock.blogspot.com/2010/02/setting-up-double-crankset.html


Advertisement