Roman,
Understood. But Marcus seems to have a 69mm BB shell. In
the past, my experience with that sort of situation was to use
a 1mm spacer on the fixed cup side. Of course, it is still
possible that a spindle meant for a 68mm BB will fit, if the
lock ring isn't too thick.
A different, recent CR list posting sent me to "the dungeon"
to measure some Campagnolo - and a couple of Suntour Mighty -
BB spindles. I actually found a couple of parts, marked 68-SS
(or something like 68-MW in the case of Suntour) that were a
bit wider between the bearing race shoulders than the other 68
spindles. Perhaps _that_ is what you're supposed to use with
this BB.
Note that this is something other than the differences found
between spindles meant for thick cup or thin cup bottom
brackets. So please don't bring that into the discussion, it
will just confuse things. Although it might be worth noting
that some of the odd mixes of pieces that have worked well for
people might be due to the accidental discovery of
out-of-specification parts.
Cheers,
Fred "hors spécifications" Rednor - Arlington, Virginia (USA)
> Fred and Marcus,
>
> A 70 may indeed be the proper way to go - but I have an early
> 60's that I aquired on ebay in the past year that came to me
> as a bare frame with a 68mm BB width. I assumed that over the
> years, it had one or two too many facings but who knows. I
> installed a 68 mm BB axle and all is fine with chainlines and
> shifting and rides great. It's was repainted in the
> early/mid 70's. I ride it with improper NR gear that goes
> with the vintage of the repaint. I'm not sure I could stand
> to restore it - then I'd have to track down all the old bits
> - perhaps if I get a little more cumpulsive.......
>
> Roman Stankus
> Atlanta, Georgia USA
>
>
> -----Original Message-----
> >From: Fred Rafael Rednor <fred_rednor@yahoo.com>
> >Sent: Sep 21, 2006 11:01 AM
> >To: marcus.e.helman@gm.com, classicrendezvous@bikelist.org
> >Subject: Re: [CR]69mm BB?
> >
> >Marcus,
> > Use a 70mm spindle. Assuming that this thing has Italian
> >threading, that's what the make expected you to do anyway.
> If
> >it helps with th chainline, you might consider using a 1mm
> >spacer between the fixed cup and the BB shell. In fact,
> there
> >seem to hae been a couple of BB shell manufacturers who
> >expected you to use a fixed cup spacer. (Or some extremely
> >zealous mechanics facing the shells...)
> > Good luck,
> > Fred Rednor - Arlington, Virginia (USA)
> >
> >--- marcus.e.helman@gm.com wrote:
> >
> >>
> >> I just measured the BB of my '68ish Cinelli, and got 69mm,
> >> right between
> >> the standard widths of 68 and 70. There is a Japanese BB
> in
> >> there now. I
> >> am thinking about replacing it. Should I use a spindle
> for a
> >> 68mm BB or a
> >> 70mm BB? I care about Q factor, but I think that if I use
> a
> >> 68, I run the
> >> risk that the adjustable cup will go too far into the BB
> >> shell, and there
> >> will be nothing for the lockring to grab onto. Italian
> >> standard appears to
> >> be 70mm too.
> >>
> >> Have I missed anything?
> >>
> >> Is there any difference between pre-CPSC Campagnolo and
> >> post-CPSC
> >> Campagnolo? If so, are the parts marked differently? I
> have
> >> looked at
> >> some catalogs online, and I don't see any difference.
> >>
> >> Best regards,
> >> Marcus Helman
> >> Huntington Woods, Michigan
> >> USA
> >>
> >>
> >> _______________________________________________
> >>
> >
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