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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