Hi Kurt and Harvey,
Kurt's photo is of the Wolf Alpine conversion on my 1963 Cinelli. Original to the bike, to the best of my knowledge. It's in my workshop. I'd be happy to look at it more closely and answer any other questions you may have.
Best,
David
David G. White Burlington, VT
Harvey Sachs wrote:
> Spence Wolf is one of my heros, so there is some disappointment in
> Kurt's picture (url below). The Spence Wolf conversion uses the same
> geometrical relationship of pivot to upper pulley as the Gran Sport,
> rather than the offset used by the Record and NR cages. This probably
> means that it will have trouble not skipping on a 13 tooth sprocket, a
> well-known problem with the Gran Sport geometry. Should be ok on a 14,
> and there are lots of ways to make that do for a touring bike. Just
> can't use our favorite half-step with a 13 - 31 FW and 40/45
> chainrings, or 42/47.
>
> harvey sachs
> mcLean va.
>
> Kurt Sperry wrote:
> Spence''s first alpine conversions were well before the introduction
> of the Rally and probably even the Gran Turismo. The cage plates on
> the Wolf alpine conversion look pretty crude aesthetically and
> probably could've been produced by almost anyone with basic machine
> tools.
> Here's an early Wolf alpine modded Record:
>
> http://picasaweb.google.com/