for C-Record strada/road cranks, you can use the modern centaur 111mm *symmetric* BB and it works perfect. same ISO taper, same spindle length, same symmetry as the orginal C-record cup-and-cone BB. lickton's calls it the "2008 Centaur 111mm" model, part#s: 0205-13 (eng) and 0205-15 (ita). this is the BB i installed on my somec with c-record cranks...works PERFECT!
i'm trying to figure out if the equivalent 115.5mm centaur will work with Nuovo/Super Record cranks. nuovo record BBs are ~115mm assymetrical and ISO tapers, with the longer spindle-end on the drive-side. the centaur spindle length looks right (enough, within ~1mm overall) and the ISO tapers are right, but i believe the 115.5mm centaur is also symmetric so you'll need some BB spacers to shift everything over to the drive-side. however, i dont have the difference in length between the drive- and non-drive sides of the nuovo record BB spindle to know how wide the spacer needs to be...DOH!
edit: based on the documentation i found here: http://www.minortriad.com/campagbb.html
a 68mm english nuovo record BB is 115.5mm overall with 49mm on the drive-side and 33.5mm on the non-drive (part# 744/A 68 SS). that's a difference of 15.5mm in spindle-end lengths. you'd need half of that in the form of a spacer to shift a symmetric BB over to the drive-side...15.5mm / 2 = 7.25mm thick spacer. say 7mm is close enough for gubment work.
7mm seems somewhat wide for a BB spacer, you're giving up alot of important threaded interface in the BB area. i'm reluctant to think this is a really workable retrofit. i might try it out and see how it works...
edit #2: i re-read that documentation and the spec i was using was for an older BB. the latest nuovo record BB spec is in chart-3 "new style". the nuovo record double BB is nominally 113.5mm long assymetric (28mm + 54mm + 31.5mm). and looking at the differences in spindle-length, it only has 3.5mm of assymetry.
so...going back to the symmetric 115.5mm centaur cartridge bb...dang, it's still not going to work, since the long spindle-end is on the fixed-cup side and you cant thread it in any further to "give" the extra length to the non-drive side. dang.
Last edited by wallymann; 05-26-11 at 07:47 AM.
Reason: new info added