How to figure out which BB to buy
09-02-05 | 07:41 AM
#1
Thread Starter
Traffic shark
Joined: May 2001
Posts: 4,612
Likes: 0
From: California
Bikes: 2 fixies, 1 road, 29er in the works.
How to figure out which BB to buy
If I have a custom frame and I'm nearing completion.. How do you figure out which BB to buy size wise so I'll get a good chain line?
09-02-05 | 07:49 AM
#2
roll'em high
Joined: Feb 2005
Posts: 2,391
Likes: 0
From: columbus, ohio
chainline, assuming a properly aligned frame, is only contingent upon your hub, cog, bottom bracket, and cranks.
the only frame-related issues i've really run into are when the chainring/cranks bottom out on the seatstays. you tend to only really see this on frames wide rear spacing or when trying to pull in the chainline of certain road cranks. i'm assuming that your frame is designed with track/fixed in mind, so it should be fine.
the only frame-related issues i've really run into are when the chainring/cranks bottom out on the seatstays. you tend to only really see this on frames wide rear spacing or when trying to pull in the chainline of certain road cranks. i'm assuming that your frame is designed with track/fixed in mind, so it should be fine.
09-02-05 | 10:25 AM
#4
heliocentrist
Joined: Aug 2004
Posts: 582
Likes: 0
From: ann arbor mi
a cartridge-style bottom bracket for which neither "cup" has a stop flange (a phil wood, for example) will allow you to move the spindle to the left or right a few millimeters either way. but yeah, like ira says, for 120 mm rear spacing, 110 mm is a good bet.
