Cycling Forums - View Single Post

08-05-2004, 05:47 PM

supabonbon wrote:

> What is the major difference between track cranks and regular road
> cranks when it comes to chainline issues?

Track cranks generally have about a 42 mm chainline, sometimes a bit
less. See: http://sheldonbrown.com/chainline

Track cranks most often come in the 165 mm length, which is shorter than
current fashion for road cranks.

Most track cranks use the old 144 mm bolt circle, while most road cranks
use the 130 bolt circle.

Track drivetrains commonly use the older, wider 1/8" chain and
sprockets, rather than the 3/32" size used for road bikes.

See my fixed gear articles: http://sheldonbrown.com/fixed

Sheldon "Prefers Road Cranks For Road Fixed Use" Brown
+-------------------------------------------------------------+
| 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 derailleur? |
| We are getting soft...As for me, give me a fixed gear! |
| --Henri Desgrange, _L'…quipe_ article of 1902 |
+-------------------------------------------------------------+
Harris Cyclery, West Newton, Massachusetts
Phone 617-244-9772 FAX 617-244-1041
http://harriscyclery.com
Hard-to-find parts shipped Worldwide
http://captainbike.com http://sheldonbrown.com

08-05-2004, 05:47 PM	#4 (permalink)
Sheldon Brown Guest Posts: n/a	Re: Track cranks/bb question supabonbon wrote: > What is the major difference between track cranks and regular road > cranks when it comes to chainline issues? Track cranks generally have about a 42 mm chainline, sometimes a bit less. See: http://sheldonbrown.com/chainline Track cranks most often come in the 165 mm length, which is shorter than current fashion for road cranks. Most track cranks use the old 144 mm bolt circle, while most road cranks use the 130 bolt circle. Track drivetrains commonly use the older, wider 1/8" chain and sprockets, rather than the 3/32" size used for road bikes. See my fixed gear articles: http://sheldonbrown.com/fixed Sheldon "Prefers Road Cranks For Road Fixed Use" Brown +-------------------------------------------------------------+ \| 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 derailleur? \| \| We are getting soft...As for me, give me a fixed gear! \| \| --Henri Desgrange, _L'…quipe_ article of 1902 \| +-------------------------------------------------------------+ Harris Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041 http://harriscyclery.com Hard-to-find parts shipped Worldwide http://captainbike.com http://sheldonbrown.com