I found this ehow on how to use my rear wheel from a coaster brake type kids bike wheel.
I was needing two 10 inch diameter inflatable tires to use as big training wheels on the motor bike meant for trail riding, to temporarily convert for parade use as a California Sheepshead Fish.
I will have to go under 5mph and still keep balance. With a metal sketon frame and a fabric cover, it may get damage or myself hurt if it were to fall over, so training wheels as it putts along is my answer.
I have to see what washers are necessary to fill some gap left when removing some parts like the shoes to do the conversion so I have the equivalent of two front free wheels.
Attached picture has engine and gas tank removed as required when I recently welded parts on frame. Extra handle bars are temporarily in place. Trail riding it is best to not use ape hangers.
The build continuing
Trail riding and out on USDA Forest Service Roads where Lic. OHV OK'ed