Being more or less retired, I ride in the winter about 3pm. It's about the warmest time of day that isn't full of feeders or commuters.
I have a two inch (almost) wheel on a 33cc chainsaw engine. It requires some serious pedaling to get up to speed but after that it runs remarkably well. It will pull any small hill under its own power by bleeding off speed. Even those it gets slowed down on requires not more than a simple pedaling. I was really surprised that I like it, but there are so many hills here I am going for a smaller wheel when my welding skiills get good enough to weld a nut on the end of a drive wheel and have it hold.You know I am thinking more and more that the simple small engines over the rear wheel is becoming more to my liking. The 22cc engine I have on the MB is pushing the bike along very well. It is compact and is very quiet, and I could add a longer pipe down away from me and get it more quiet. The only thing I would like is a better drive system, I am not fond of the friction drive. I just slips too much. It needs a larger drive wheel that would give more surface to drive with, but it also gives me too high a gear, so I need to use a drive system to slow the large wheel down. I was watching all the bikes go down the bike path today and with my complete release system I can use the bike path with the engine off, and with the extra weight being so small and no friction, no bother. I think a 2" drive wheel would be the best traction on the tire, so I need to find a way to drive it in a simple manner. Have fun, Dave