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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 12-03-11, 09:23 AM   #1
DiamondStarHalo
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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!
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Old 12-03-11, 09:46 AM   #2
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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.
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Old 12-03-11, 08:11 PM   #3
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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
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Old 12-03-11, 08:20 PM   #4
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No, those will all give you a 42mm chainline.
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Old 12-03-11, 11:19 PM   #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
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Old 12-04-11, 12:06 AM   #6
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You'll be good.
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Old 12-05-11, 11:01 AM   #7
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Yahoo! Thanks!
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Old 01-02-12, 10:20 PM   #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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