----- Original Message ----- From: "Todd Teachout" <thteach@sonic.net> To: <PBridge130@aol.com>; <classicrendezvous@bikelist.org> Sent: Wednesday, April 14, 2010 23:52 Subject: [CR] rings for three bolt campy crank
> You don't elaborate whether your crank is alloy or steel. I've only seen
> photos of the alloy version. I have experience with the steel version,
> one of the most beautiful cranks out there, in my view.
> For the steel version the BCD is 116 which was a popular standard for
> racing gearing in the 1940's and 1950's.
> At the time Simplex and Magistroni were the dominant players in italian
> racing crankset components. Gnutti a step below with regard to market
> penetration. I know for certain that a Simplex 3 pin chainring set fits a
> steel campagnolo 3 pin gran sport crank. Magistroni should work but I
> don't have confirmation on that point.
> Chainring sizes for 116 were typically between 49 and 53 for the large
> ring and 43 to 49 for the small ring. I haven't seen single chainring
> setups but there is no reason to doubt that it couldn't work. Or carry
> the extra ring and manually shift onto the big/small ring as conditions
> warrant.
> I might add with the rather small differences in ring size, a stiff chain
> from that era combined with period correct derailleurs gave a shifting
> experience that is excellent.
> Good Luck,
> Todd Teachout
> Hercules, CA
I got this chainring from Mike Barry.
Steel, 116bc, 46 tooth, 3/32".
http://www.wooljersey.com/
He had more.
http://bikespecialties.com/
Good luck.
Pete Geurds
Douglassville, Pa. USA