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Smallest 130bcd chainring possible?

  • 09-05-2010 8:40pm
    #1
    flickerx
    Registered Users, Registered Users 2 Posts: 1,234 ✭✭✭


    Greetings from abroad,

    Anyone know what the smallest possible chainring is for a 130mm bcd crank?
    I'm guessing somewhere around 40t.

    Thanks


Comments

  • #2
    victorcarrera
    Registered Users, Registered Users 2 Posts: 1,059 ✭✭✭victorcarrera


    39 is the smallest I have seen.


  • #3
    Lumen
    Registered Users, Registered Users 2 Posts: 31,142 ✭✭✭✭Lumen


    FSA and SRAM do 38T, presumably others too.

    According to this 37T is theoretically possible with mucho faffing.


  • #4
    flickerx
    Registered Users, Registered Users 2 Posts: 1,234 ✭✭✭flickerx


    Lumen I think that link is wrong...

    So what bcd then are other cranks? Ones that have a smaller chainring than 38t?


  • #5
    penexpers
    Closed Accounts Posts: 4,038 ✭✭✭penexpers


    110mm is common too (compact road). The inside of a triple is usually 74mm (again road).

    For MTB, it's usually 104mm outer and 64mm inner.


  • #6
    Lumen
    Registered Users, Registered Users 2 Posts: 31,142 ✭✭✭✭Lumen


    flickerx wrote: »
    Lumen I think that link is wrong...

    Ah yes, should be this.


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