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

Sindle length; cottered cranks vs square taper.

  • 24-07-2013 09:48AM
    #1
    cjt156
    Registered Users, Registered Users 2 Posts: 2,062 ✭✭✭


    Spindle! Eejit!
    Considering upgrading my daily hack's worn out bottom bracket with a square taper cartridge BB. This will mean replacing the 30 yr old crankset too.

    Question is what size spindle do I get? Is it a simple matter of measuring the cottered spindle end-to-end and getting the same dimension in the sq taper? Are the two systems comparable? Or do you factor in the crank and bolt too for the overall dimension?


Comments

  • #2
    sbs2010
    Registered Users, Registered Users 2 Posts: 565 ✭✭✭sbs2010


    You need to choose your new crankset first. Then depending what you pick, a specific BB will be required.

    The interface needs to match between crank and BB spindle. Spindle length might not be important if you go for an external cup BB. Your frame's BB shell is the other variable - in order of likelyhood it's one of - English, Italian, French.
    Which ever it is you need the BB to match.

    By the way, square taper is old technology at this stage. Lots of newer types with more choice. Though saying that I'm on square taper and see no reason to change.


Advertisement