I don't believe that the ORO chain and freewheels were produced before the latest 60s or early 70s. My beloved spouse's bike has a Regina Oro freewheel which I believe dates to our Rhode Island Period (!), which was 1968 - 1972.
At 07:58 AM 10/23/2000 -0400, Cino1947@aol.com wrote:
>Then which freewheel and chain are appropriate for a 1950's Bianchi? Were
>there 3/32 in their Gran Sport series? I think the Oro series came out later.
>In a message dated 10/22/00 9:39:32 PM Eastern Daylight Time,
><< No, the early 1950s Campagnolo Gran Sport derailleur used the typical
> 3/32" derailleur chain not the 1/8" chain, (the pulley cage is stamped
> "CATENA 3/32" and the body is stamped "DA 14 A 26 DENTI"). It was for a
> four or five-speed freewheel. The 1/8" chain is for track or early
> (1930s) three-speed freewheel derailleurs.
> Chuck Schmidt
> South Pasadena, California >>