At least some of the DuraAce bb's used tapers that were larger than Campy - which therefore kicks the arms out quite a bit if used with a Campy arm. My guess is some of these older DuraAce bb's would work well with Campy and French arms where the tapers are getting a bit weak.
Of course, the bb that is desired is for use with a triple I believe - and I don't think DuraAce ever made a triple bb. But I thought I'd chime in on this so that folks weren't confused with the DuraAce bb's in general.
Also, I don't think Phil Wood ever made a distinction about tapers in the old days - in general I think the phil tapers ran a bit larger than campy, and therefore they faked it well for the French arms. I could be dead wrong on this, as my mind gets fuzzier on this the longer I'm away from it.
Mike Kone in Boulder CO
Mike Kone in Boulder CO
> TA and Stronglight arms usually bottom out on Campy axles and clones, so the
\r?\n> preferred BB axle for these arms is either TA or Stronglight. However, JIS
\r?\n> standard Japanese axles will work as well, except a JIS axle of the same length
\r?\n> and offset will position the TA or Stronglight chainrings 1 or 2 mm further out
\r?\n> from the BB. JIS axles were found on mid-range cranks like the Sugino Maxy and
\r?\n> maybe some cheaper Shimano models. Top models like Dura Ace and Sugino Mighty
\r?\n> used Campy-compatible tapers. Until recently a good selection of JIS axles was
\r?\n> available from places including Harris Cyclery.
\r?\n>
\r?\n> Regards,
\r?\n>
\r?\n> Jerry Moos
\r?\n> Houston, TX
\r?\n>
\r?\n> Daniel Artley wrote:
\r?\n> I'm in the process of swapping cranks on my old classic tourer. I'm
\r?\n> taking off my Campy triple, and putting on a TA Cyclotouriste set of
\r?\n> rings with a Stronglight 49 set of arms. Of course the BB that worked
\r?\n> with the Campy doesn't work with the TA or Stronglight arms as far as
\r?\n> length and offset goes. So I'm working on that. My original first
\r?\n> issue of Sutherlands shop manual states that BB axle tapers vary between
\r?\n> manufacturers and may have to be filed to provide a proper fit. Would
\r?\n> someone on the list be able to state how the tapers of BB axles match or
\r?\n> don't match between the older Campy, TA and Stronglight brands? I don't
\r?\n> want to venture into off topic BB's, but because of the difficulty in
\r?\n> finding a period correct triple BB for the Stronglight crank, I can
\r?\n> almost certainly find some kind of user modern BB set if the tapers are
\r?\n> correct. I've also heard about ISO and non ISO tapers. Could someone
\r?\n> explain these as well? I'm just trying to learn what's out there. And
\r?\n> I've got to get this build together by the Cirque'.
\r?\n>
\r?\n> Dan Artley in Parkton, Maryland