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!

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

No, those will all give you a 42mm chainline.

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

You'll be good.

Yahoo! Thanks!

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!

https://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)