Limiting a rear derailleur to less speeds

[bcmoore]

Hey guys,

So I saw this beauty on ebay...
http://cgi.ebay.com/1977-Pinarello-Chrome-Bicycle-Two-Speed-Bicycle-58cm-/250560878876?cmd=ViewItem&pt=Road_Bikes&hash=item3a5697991c

and I noticed the rear derailleur only shifts between 2 speeds, which I thought was kind of cool because I've always wanted a bike that isn't quite a single speed but also not a 24 speed or so...

So, I was wondering if anyone knew if this is something you can just do with a regular derailleur or what...they talk about a "Campagnolo CdA rear derailleur (Chosen for the mechanical limit bar.)" does anyone know anything about that?

Thanks!

[cyclerUK]

Most RDs will have limit screws that will close down the shift movement. Whether they can be restricted to just two though??
I really don't see the sense in just two gears. I would go for a single fixed gear or perhaps a Sturmey Archer 3 speed.

If you have a derailleur bike then have a go at setting the stop screws to see if it works.