Stronglight BB cups interchangability
03-09-25 | 03:03 PM
#1
Thread Starter
Newbie
Joined: Oct 2017
Posts: 42
Likes: 25
Stronglight BB cups interchangability
A question for the local experts: were the cups used on the 1950s era Stronglight cottered bottom brackets the same as those used on the stronglight non-cottered bottom brackets? That is, could the cups from the "competition" bottom bracket be used with a "model 34" axle?
I ask because I would like to use a Stronglight model 34 bottom bracket in a frame with BSC threaded bottom bracket, but cannot find BSC cups sold with a cottered axle. However, they are common with the square taper, non-cottered axle. If they are interchangable, I can mix and match.
Thank!!!
I ask because I would like to use a Stronglight model 34 bottom bracket in a frame with BSC threaded bottom bracket, but cannot find BSC cups sold with a cottered axle. However, they are common with the square taper, non-cottered axle. If they are interchangable, I can mix and match.
Thank!!!
03-09-25 | 04:22 PM
#3
Senior Member
Joined: Jul 2015
Posts: 7,465
Likes: 3,281
From: NW Oregon
Bikes: 1982 Trek 930R Custom, '91 Diamondback Ascent w/ XT, XTR updates, Fuji Team Pro CF road flyer, Specialized Sirrus Gravel Convert, '09 Comencal Meta 5.5 XC, '02 Marin MBX500, '84 Gitane Criterium bike
i mix and match old style BB cups and BB spindles quite often... i'm not remembering any that wouldn't mix.
03-09-25 | 04:35 PM
#4
aged to perfection
Joined: Jun 2009
Posts: 2,242
Likes: 1,660
From: PacNW
Bikes: Dinucci Allez 2.0, Richard Sachs, Alex Singer, Serotta, Masi GC, Raleigh Pro Mk.1, Hetchins, etc
what you want to do is confirm that the bearing track is more or less in the center of the races
you can paint the spindle and cup with a sharpie, test assemble, and see
juvela has helpfully posted the diagrams, and I agree, probably will be fine.
mix and match of spindle, cups etc is a trickier call
/markp
you can paint the spindle and cup with a sharpie, test assemble, and see
juvela has helpfully posted the diagrams, and I agree, probably will be fine.
mix and match of spindle, cups etc is a trickier call
/markp
