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  • 130BCD chainring sizes question
  • nickjb
    Free Member

    I’m looking to use these rings for a project. Does anyone know the diameter of the large hole in the middle. They are 130mm BCD track bike rings. I presume it is a standard to sit on a lip on the cranks

    Posted 11 years ago
    nickjb
    Free Member

    Anyone? Struggling with google on this one!

    Posted 11 years ago
    simon1975
    Full Member

    I could pop down to the bikeshed with a ruler but it won’t be the most accurate measurement…

    Posted 11 years ago
    nickjb
    Free Member

    That’s probably better than me measuring a picture on the screen. Much appreciated 🙂

    Posted 11 years ago
    simon1975
    Full Member

    ygm with a photo. I reckon 115mm.

    Posted 11 years ago
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