On Feb 20, 2010, at 7:57 AM, Todd Teachout wrote:
> Recently, a Nivex touring derailleur sold on ebay.
> The derailleur has a lower "jockey wheel" that looks similar to a
> cyclo (in side view) in that there are large disks on the side,
> presumably to retain the chain. The Nivex jockey wheel side disks
> appear to be fixed. A normal sized jockey wheel appears to rotate
> between the plates. On a cyclo derailleur the disks are part of
> the jockey wheel and the whole assembly rotates as the chain moves
> through the derailleur.
> The disks on the Nivex seem to be separate from the jockey wheel.
> Can anyone on the list confirm if the Nivex lower disks, rotate?
> Todd Teachout
> Hercules, CA
The lower disks do not rotate; jockey wheel rotates independently between the disks.
San Francisco, CA USA