The early ones did not use the bushing. If I have a guess I would say 1971 and older. Steven Willis The Bike Stand 1778 East Second Street Scotch Plains NJ 07076 908-322-3330 http://www.thebikestand.com
>I like to take old used components and tear them down to mix and match
> parts to get the best looking component possible. In tearing down a few
> rear deraillers and sorting through my spare parts to mix and match I
> found one spring bolt that would not fit with the usual plastic bushing.
> This is Camy p/n 811/A which they call the "gear spring bolt" and is
> used p/n 810/1A "lower body bushing".These are the parts that assemble
> to hold the jockey pulley cage to the parallelogram. This odd bolt seems
> to fit OK and works fine without the bushing. All the other bolts I have
> require the bushing. Does anyone know if this is in fact a NR bolt and
> when it was produced. The markings on all the bolts are identical.
>
> Also is there a preferred position for reassembling the spring? There
> are two holes to choose from and I assume one position provides more
> tension than the other. What are the circumstances where the higher
> tension is prferred?
>
> Thanks,
>
> Norm Lafleur
> Ashfield, Ma.
> USA