Stevan Thomas wrote:
>
> I was just comparing some Campagnolo "Gran Sport" marked bar end shifter
> bodies to the unmarked ones we are all pretty familiar with and was surprised
> to see they are quite different. If you look at the lever, the later lever
> has a larger diameter for cable take up than the early one. I don't have an
> early one to compare it to, but the late one doesn't fit the early body.
> Looking at the distance from the edge of the hole for the screw head to the
> edge that is adjacent to the handlebar, the older GS measures 5.8mm, the
> newer GS measures 7.3mm. They obviously moved it back to increase the cable
> take up. Another difference is where the lock nut goes: the late one (1955)
> is relieved so a Campy T wrench can be used to tighten the nut. The early one
> is not relieved, it is the same hex shape as the part 139/2, "Dado di perno".
> I don't have a parts catalogue covering the earlier parts (un-numbered 1951,
> 1952 or 1953 catalogue #12), but I suspect the equivalent part may be longer
> so the lock nut (139/1) is "proud" and not flush.
There is no lock nut on the early ones. Obviously didn't hold their adjustment. The first change was to add a lock nut. I have a "Gran Sport" stamped set with aluminum levers.
Chuck Schmidt
L.A.
http://www.velo-retro.com (Campagnolo Timeline)
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