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Campagnolo bottom bracket

Old 07-21-21, 01:09 PM
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Velometry
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Campagnolo bottom bracket

Is there a difference in 1970's to 1980's Campagnolo bottom brackets.
Eg: nuovo record to super record BB
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Old 07-21-21, 05:02 PM
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There was a small chage in the spindle length/offset dimensions made around 1977 in order to comply with gov't safety standards (blunt "lip" added to front derailer cage to prevent slicing skin, lol).

The true Super Record bb had a titanium spindle and used 3/16" ball iir.
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Old 07-21-21, 05:14 PM
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-----

there is what might be termed early and late NR

late type spindles are marked "+1 - +1.5" - a change needed to be compatible with the greater dish/cupping of the spider


-----
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Old 07-21-21, 08:17 PM
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Originally Posted by Velometry View Post
Is there a difference in 1970's to 1980's Campagnolo bottom brackets.
Eg: nuovo record to super record BB
Yes. Between Record ("thin") and Nuovo Record ("thick") cups, titanium Super Record, and CPSC mandated changes, Campagnolo bottom brackets of that era are a hot mess. Campagnolo USA published an article to help make sense of it all:
Attached Files
File Type: pdf
campy-BB-specs.pdf (1.10 MB, 7 views)
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Old 07-21-21, 09:35 PM
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Here's my cheat sheet for Campy BB spindle length and markings:

NR/SR thick/rifled cups-
Italian:
Double -Pre CPSC ('78): 113mm. Post: 115.5
Triple - Pre: 118. Post: 124

English:
Double - Pre: 112. Post: 114.5
Triple - Pre:117. Post: 123

Late-80s-90s markings:
Spc -- ≻ c - record
Ssa -- ≻ croce d'aune
Ssb -- ≻ chorus
Ssg -- ≻ athena
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