Bottom Bracket Specs
#1
Standard Member
Thread Starter
Join Date: Apr 2009
Location: Brunswick, Maine
Posts: 4,272
Bikes: 1948 P. Barnard & Son, 1962 Rudge Sports, 1963 Freddie Grubb Routier, 1980 Manufrance Hirondelle, 1983 F. Moser Sprint, 1989 Raleigh Technium Pre, 2001 Raleigh M80
Mentioned: 26 Post(s)
Tagged: 0 Thread(s)
Quoted: 1297 Post(s)
Liked 940 Times
in
490 Posts
Bottom Bracket Specs
The bottom bracket spindle on my mountain bike is 111mm. The upgrade I am looking at
(Stronglight Twister Ti) is offered in 113 and 108. Which one should I get and are there any
supplemental pieces I might need to make it fit?
Paul
(Stronglight Twister Ti) is offered in 113 and 108. Which one should I get and are there any
supplemental pieces I might need to make it fit?
Paul
#2
Mechanic/Tourist
No way to tell with info given. Check the existing chainline and how far your inner chainwheel is from the frame, as well as how much adjustment is left on the front derailleur. That will tell you which way to go or if neither is satisfactory. Sheldon Brown discusses chainline in detail. The chainline can be adjusted to the right with a spacer but you need to look at where that puts your left crank, how far in the left cup needs to go and if you are losing significant thread engagement on the right.
Last edited by cny-bikeman; 08-29-10 at 10:03 AM.
#3
Banned
For gram counting, a Phil Ti / Mg BB will dial in better, as It offers many spindle lengths
+ the mounting rings can be shifted in the frame a few mm
and the press fit spindle , can also be moved in the BB cartridge.
+ the mounting rings can be shifted in the frame a few mm
and the press fit spindle , can also be moved in the BB cartridge.
Thread
Thread Starter
Forum
Replies
Last Post
gatto karma
Bicycle Mechanics
9
02-15-17 04:04 AM
TonyA
Bicycle Mechanics
16
09-20-11 06:39 PM