I have been experimenting on various ways to improve exercise wheels and I came up with this one which I think is neat. The entire hub and bearing assembly is fastened together and the wheel becomes quick-connect. This allows it to fit through cage doors where others cannot. I am still working on a best way to fasten the wheel to the axle. Anything works, but the goal would be to not take up much space inside of the running wheel to make it safer. These photos show a knob and another fastener of experiment. I am even pondering building a thin homebrew fastener using my laser engraver.
If you are a fan of the offset "bounce" concept, this design allows you to add a hole that is not centered. 1" is a bit rough so I would shoot for 1/2" off-center for bounce.
So you can take whatever wheel you have and modify. It's easy.
is the playlist for all of the skate bearing videos.
Original smaller R4A-RS
bearing for simple replacement.
Two new skate bearings
1/2" PVC Tee to house bearings
1-1/2" to 1/2" PVC Bushing for tail guard
1/2" knockout seal for conduit
One or two CP3540 cover
PVC parts for stand
5/16" bolt, 2-1/2" to 3"
a few 5/16" nuts
1-1/2" fender washer
5/16" hand-knob of some sort (still looking for a best fit)