The bottom bracket for the Ambrosio 6 arm I sold on ebay some time ago, currently resides in my Medici... I don't think there was anything special about it. Has a NR crankset mounted on it now.
I'm not sure what year the bike is attached to that crankset, but my BB was a OMAS sealed bearing which was standard equippe on a 1982 Colnago Mexico.
I will say one thing about that Ambrosio crankset... The Campagnolo pedals did not want to come out at all. Very tight. However, they threaded into the Campagnolo crankset a-ok. Wonder why?
Ann Phillips, Decatur GA has pieces of that Mexico on a lot of bikes now!
>Date: Wed, 17 Mar 2004 22:28:18 +0100 (MET)
>From: "kim klakow" <Akimbo71@gmx.net>
>Subject: Re: [CR]Ebay Outing...Colnago 6 arm Crankset
>I like tha bit about the $100 BB.
>kim klakow
>berlin, germany
>
> > ya but where can I get chain rings.
> > Steven Willis
> > 1778 East Second Street
> > Scotch Plains NJ 07076
> > 908-322-9022
> > http://www.thebikestand.com
> > ----- Original Message -----
> > From: "skip sinatra" <skipsinatra@hotmail.com>
> > To: <classicrendezvous@bikelist.org>
> > Sent: Wednesday, March 17, 2004 11:06 AM
> > Subject: [CR]Ebay Outing...Colnago 6 arm Crankset
> > > For the Colnagophiles........
> > > This is the second I've seen in the last month....
>http://ebay.com/<blah>
> > > Skip Sinatra, a distant Cousin
> > > Frog Level Va