The lovers embrace ~
A working gear and belt mechanism (see video)
Here are actual working gears and a drive belt mechanism.
This is a development of an idea by waynehjr1 http://www.dotpedia.com/creations/view/2171 which was really cool.
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free spinning wheel. The outside spins freely on the stationary inner axle.
This wheel has a central 5ring, surrounded by an 11ring (not a 10ring), making a (mostly) rigid rod for the axle. It is the third layer out that rotates on this rod. All layers of the axle and wheel are reversed in polarity compared to the neighboring layers.
It is possible to use a central 6 ring or larger but I settled on this configuration as being the most free turning while still staying in place (that I found, at any rate)
The following 3 photos are just the same as the first three photos, except that they have been improved by waynehjr1 who (along with everybody except (withheld) and I) think they look better