Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the Newton-Rider International Giveaway for a Foldable Bicycle Helmet


Bottom Bracket width
#1
I currently have an Octalink triple crank and the bb is 68x121. I want to replace the octalink crank with something else, most likely a truvativ elita triple. I can't find any other bottom bracket that is 121mm wide. The Truvativ mentions 118mm which is the widest I have been able to find. Will this work or am I stuck with this octalink for the rest of bikes life ( god I hope not) ?

  Reply
#2
I'd say yes. The 121mm is the axle width. It is only important that the crank set matches this measure, otherwise the chain line is wrong and the front derailleur will not work.<br />
Look also at<br />
http://www.sheldonbrown.com/gloss_bo-z.html#bottom<br />
text below the tables for a better explanation.

  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
11-42 cogs on Road bike?
Yesterday 02:04 AM
NewBikeShopper (intro & opinion request)
Yesterday 01:57 AM
1983 Trek 720
Yesterday 12:23 AM
brakes
01-19-2021 11:25 PM
Road bike brakes upgrades
01-19-2021 01:41 PM
Do you wave to other cyclists?
01-18-2021 02:48 PM
Newton-Rider, a helmet like no other
01-15-2021 05:01 PM
Colnago R41 Handlebar
01-14-2021 10:24 PM
How much do you bike per year?
01-14-2021 04:50 PM
BMX Shoes
01-14-2021 04:42 PM

[-]
Top 5 Posters This Month
no avatar 1. Criminal
19 posts
no avatar 2. RollOn
6 posts
no avatar 3. Henry_G
5 posts
no avatar 4. Yevhen
5 posts
no avatar 5. Zviedrs
4 posts