Singlespeed & Fixed Gear - Langster Bottom Bracket and Crankset

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.



PDA
DiamondStarHalo
12-03-11, 08:23 AM
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!

Scrodzilla
12-03-11, 08:46 AM
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.
skadoosh
12-03-11, 07:11 PM
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

prooftheory
12-03-11, 07:20 PM
No, those will all give you a 42mm chainline.
DiamondStarHalo
12-03-11, 10:19 PM
Thanks all. My current plan is to go with ...
- Sugino Messenger crankset
- Sugino 68 x 103mm Standard JIS square taper BB
Scrodzilla
12-03-11, 11:06 PM
You'll be good.
DiamondStarHalo
12-05-11, 10:01 AM
Yahoo! Thanks!
dshbf
01-02-12, 09:20 PM
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/single_piste_parts_list_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)