On Thu, 2008-05-08 at 19:27, Bill Patterson wrote:
> Thanks for the info.
>
> Olaf Schultz wrote:
>
> >
> >
> > AFAIK the Orbit is no cassette. It contains single chainwheels as on
> > old, pre cassette-times common cages... But at that time these where
> as
> > incomaptible as the click-pedals, disc-brake-pads etc...
>
> Hmmmm, This bike was purchased in 1994 in Orange county California.
> One
> of just a few Chinkaras built from a FLEVO license. I'm sure you folks
> know much more about it than I do. It has a 7 cog cassette and
> internal
> gears.
>
> I think it is one of the most elegant designs built. We built a clone
> in
> my bike class with a steeper head tube 10 years ago. A very nice bike.
>
> The local bike shop says that this bike has a 3 speed internal hub,
> and
> the shifter is a 3 speed grip shift. I can only get 2 speeds out of
> it.

It's relativ easy to decide if it's an orbit (pissed of with getting
cogs) or an 3x7 (reasonable for that time).

http://cgi.ebay.de/Sachs-SRAM-Getriebenabe-Schaltung-3x7_W0QQitemZ330233271570QQ\
ihZ014QQcategoryZ77586QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

shows a 3x7 out of that time. Later versions are more smooth at the hub
body and may contain a ring with 3x7...

The orbit is much thinner with an ticker part nearby the freewheel, like
a blown old Shimano XT (before they becam Parallax:-)

If you have only two gears with the 3x7 theres something wrong with the
adjustment. Maybe the shifting wire has to much friction: Throw out zinc
wires, put in stainless steel... it already new stainless steel: But a
spring, comrpesses and secured with a luster terminal on the wire for
better support of the weak spring inside the hub. (Sorry no proper
picture)...

Olaf
--
Olaf Schultz
Heimfelder Straße 77
21075 Hamburg
Festnetz: 040 791 44 938
Mobil: 0173 166 59 89