I started messing about with these things about 12 years & 150 pds. ago. I will say they
helped me get started losing weight. These days I pedal 99% of the time. My motored bike
is kinda lonely, but I start it regularly & ride once in a while. i ran the gamut of kits. Those
Chinese 2 stroke chain drive are pretty much trash. Their 4 strokes aren't much better,
too many moving parts. The chain drives are dangerous. If not very precisely installed,
the chain can jump & lock up the wheel. Not good at 35 mph, which is faster than a
regular bike is engineered to go under power. I finally settled a a high quality Japanese
2 stroke,(EPA & CARB approved), with a friction drive. It is my bug out bike & hedge against
getting too old to pedal. The rear wheel shown was for an optional belt drive I've abandoned.
It will do 26 mph, but I prefer to stay between 16 &18. 140 mpg. When electrics get that
kind of range, I might buy one.
Last edited by rawly old; 05-18-16 at 04:17 PM.