I finished a 3hp friction drive bike a couple of weeks ago and was thrill that I never had to pedal the bike at all. Top speed was still around 20 so it was the best of all worlds.
Then I decided to just try an idea I had for a bike using the scooter rear wheel as a drive with a gaoline engine. I had built a bunch of them as ebikes, but never as a gasoline. So I used an enging I thought was worn out. It was just and experiment I told myself. So I huff, I puff, and I bled. Then suddenly it was finished and it worked. Well I had to try it out didn't i? It is a little slower than the 3 hp but not a lot. It climbs the hills much slower, so I have to kick the speed up with the pedals. But when I came home I was grinning like a kid.
I haven't been off the toy bike since. It has only been a couple of days. I need to ride to the bank today, so I think I will ride the big bike there, but I am not finished testing the toy yet.