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  1. #1
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    Langster Bottom Bracket and Crankset

    Hi,
    I am starting a virgin build on a Langster Steel and I want to get the chainline right. Are there any known good configurations of bottom-bracket and cranks?

    Thanks!

  2. #2
    Bastard of Reality Scrodzilla's Avatar
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    What spindle length you'll need depends on which crankset you plan on using.

    For example, Sugino RD calls for a 103mm JIS square taper, Sugino 75 calls for a 109mm ISO square taper, IRD Definant calls for a 110mm JIS square taper, etc, etc, etc.

  3. #3
    Senior Member skadoosh's Avatar
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    Quote Originally Posted by Scrodzilla View Post
    What spindle length you'll need depends on which crankset you plan on using.

    For example, Sugino RD calls for a 103mm JIS square taper, Sugino 75 calls for a 109mm ISO square taper, IRD Definant calls for a 110mm JIS square taper, etc, etc, etc.
    Dont all those give you a 45 mm chainline? Though most track hubs for 120mm spacing gives you 42-43mm? I dont think its a big problem tho

  4. #4
    pro in someone's theory prooftheory's Avatar
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    No, those will all give you a 42mm chainline.

  5. #5
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    Thanks all. My current plan is to go with ...
    - Sugino Messenger crankset
    - Sugino 68 x 103mm Standard JIS square taper BB

  6. #6
    Bastard of Reality Scrodzilla's Avatar
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    You'll be good.

  7. #7
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    Yahoo! Thanks!

  8. #8
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    So, I was just about to pull the trigger on a Sugino Messenger crankset and their CBB-103 bottom bracket but I thought I would check out the Sugino home page first for a final spec-check and they seem to say that this will give a 45mm chainline! What gives? Here are the specs from their page ... can anyone explain? Thanks!

    http://www.suginoltd.co.jp/english/s...st_english.htm

    RD2-Messenger
    P.C.D. : 130mm
    Crank Length : RD2 Crank(Single) 165/167.5/170/172.5/175mm
    Crank Color : Black/Silver
    Chainring : 42T.44T.46T.48T
    Chainring Color : Black/Silver
    B.B.Axle : 103mm(CBBAL-103)
    Chain Line : 45.0mm(CBBAL-103)

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