This is a bike I bought over ten years ago, and have never ridden. My intent was to add it to my bike collection for it's uniqueness.
Close up photo shows the counterweights, or centrifugal weights, which sense the speed (RPM) of the wheel. As the bike speeds up, the weights move closer to the rim, and the black plastic disk between the hub and the cluster, pushes the chain onto a smaller gear.
Did anyone else ever buy one of these?
I took it for a test ride, when I first got it, and it shifted wonderfully, never jumping or getting stuck between gears.
This automatic transmission was invented by someone who believed in the KISS theory; Keep It Simple, Stupid.
There is nothing wrong with this bike, I just don't ride it because I know how to shift, so I don't need it.