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Bottom bracket for campy crankset advice/help

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Bottom bracket for campy crankset advice/help

Old 03-02-11, 06:34 PM
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Bottom bracket for campy crankset advice/help

So I'm about to be outcast from classic and vintage.

I'm putting campy parts on my Japanese Shogun.

Anyways, the cranks on the shogun are 175's which just feel too big for me honestly. I want to use the campy chorus cranks I have...any advice on what bottom bracket I should use? I'm a noob when it comes to this stuff. Obviously I need a english bottom bracket, but does it really matter what length? I know with track bikes mismatched bb/cranks can give you a incorrect chainline and I'm assuming it's the same here?
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Old 03-02-11, 06:52 PM
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Generally, BB spindle length is dependent upon the crank first. What vintage is your Chorus crankset? If you don't know, can you post a pic?
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Old 03-02-11, 06:54 PM
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I have one that looks like this:
https://s55.photobucket.com/albums/g1...ampVeloBB1.jpg
it measures 111mm spindle length, which was what Campy spec'd for Veloce/Athena double cranksets back then.
If it interests you, send me a PM.
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Old 03-02-11, 07:10 PM
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Originally Posted by ColonelJLloyd
Generally, BB spindle length is dependent upon the crank first. What vintage is your Chorus crankset? If you don't know, can you post a pic?
Sure thing! I'm led to believe they are Campy Chorus...I could be wrong however and it could possibly be Croce D'Aune? Is there any way to tell the difference?

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Old 03-02-11, 07:35 PM
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the Shogun I sold you has 175s ? I never knew.
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Old 03-02-11, 07:48 PM
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Originally Posted by Bianchigirll
the Shogun I sold you has 175s ? I never knew.
Yeah. 175's just feel wrong. It's a hard feeling to explain obviously. I feel like riding a clown bike or something. Like I'm never attaining proper cadence or some such.
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Old 03-02-11, 10:12 PM
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Check Velobase...Later Chorus cranks use 102mm BBs for example.
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Old 03-02-11, 10:23 PM
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Call me crazy, but the difference in 170 arms and 175 was noticeable and unwelcomed.

I would go with what buldogge suggests.
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Old 03-03-11, 06:41 AM
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Originally Posted by buldogge
Check Velobase...Later Chorus cranks use 102mm BBs for example.
Oh man thanks for the link to velomine. It looks like both models of the Chorus (late 80's and early to mid 90's) both use 111mm bb's.
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Old 03-03-11, 10:01 AM
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Be careful...those are probably 111mm asymmetrical and not the current Veloce/Centaur 111mm symmetrical version.


Originally Posted by rootbeer
Oh man thanks for the link to velomine. It looks like both models of the Chorus (late 80's and early to mid 90's) both use 111mm bb's.
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Old 03-03-11, 11:13 AM
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I'd be careful about getting a length less than 111mm for that double crank. Apparently no one has come up with a way to calculate chainline other than actually trying it. I put a Veloce cartridge Italian thread BB with a Superbe Pro crank with JIS taper and I doubt you could fit a Cooon hair between the inner ring and the chainstay. Talk about tight 'Q'.
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Old 03-03-11, 11:14 AM
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Originally Posted by ColonelJLloyd
Call me crazy, but the difference in 170 arms and 175 was noticeable and unwelcomed.

I would go with what buldogge suggests.
I agree I always thought it was just in my head but you can feel the difference between 170s and 172.5 weird.

Originally Posted by rootbeer
Oh man thanks for the link to velomine. It looks like both models of the Chorus (late 80's and early to mid 90's) both use 111mm bb's.
I do not think the abouve cranks are the early Chorus, the have a much shallower spider and a noticable ring around the mounting hole. they look more like early Athena (116mm spindle) or CdA (a 111mm spindle) tough to tell exactly but they are not the early chours from '88ish to the mid '9os


Attached Images
File Type: jpg
Lft Chain sty 2.jpg (93.5 KB, 7 views)
File Type: jpg
Crank rt.jpg (94.7 KB, 40 views)
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Old 03-03-11, 05:31 PM
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Originally Posted by Bianchigirll
I agree I always thought it was just in my head but you can feel the difference between 170s and 172.5 weird.



I do not think the abouve cranks are the early Chorus, the have a much shallower spider and a noticable ring around the mounting hole. they look more like early Athena (116mm spindle) or CdA (a 111mm spindle) tough to tell exactly but they are not the early chours from '88ish to the mid '9os


You know what. After some careful research I bet I do have the Athena crankset. The group of Campy Parts that I bought when I bought my Merckx came with a Athena Bottom Bracket (Italian threaded of course). I just didn't realize how closely the Croce D'Aune, Chorus and Athena all look.

I'm going to try the forum member with the 111mm bottom bracket and cross my fingers.
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