axolotl wrote:

On 5/5/2011 11:30 AM, Hactar wrote:
The catches are, it needs a 1" center hole (to go
around the axle nut), nothing can break if the wheel's removed (that's
easy, just push a button) and the body's put in a car trunk, and it only
has about 10mm clearance axially.

The most common slipring assembly is the slipring on the steering column
of an auto for the horn. Perhaps two different size diameters can be found.

Kevin Gallimore

They use clocksprings these days, not continuous rotation compatible.