Yup, 107cc. It will also be perfect for maintaining a reasonable speed driving up Monteagle Mountain in TN. Anything less, and I'm walking my bike up it. That's the whole point behind having excess horsepower. Having to ride up a mountain, all of a sudden, it ain't excess, its needed. A typical car can travel at highway speeds on flat Roads with no wind on less than 30 horsepower. However, driving up a hill requires much much more. My bike will be legal, and be reasonably equipped for the tasks I expect it to accomplish.
Yeah, its heavy. The engine, stock and running, is 30 pounds not counting fuel. I can get that down, and the total gain of all involved to get that engine on my bike will be less than 35 pounds minus fuel. Truth be told, the weight of the bike is almost a non-issue unless your racing. Before I head out across country, I have 55 more pounds to lose. Since I ride regularly without a motor at all, and am obese right now, that's the same as if I only lose 20 pounds and don't put an engine on at all. So see, weight ain't nearly as important as people would have you believe.
I also have to lengthen the wheelbase by 20" in order to keep the weight low and out of the way of my feet when I pedal. That means low speed riding will be more lathargic, but all in all, it will make for a more comfortable ride.
As you can tell, I'm still gathering materials and designing just what this project will take to become reality.
When I get pulled over, I will offer to race the cop. The only rule will be we can only consume a half ounce of fuel each, first one to a 1/4 mile wins! lol
I already have a tube installed in my handlebar to store the paperwork I will have to pull out to justify my meat motor driven gasoline assisted hybrid moto-bicycle.
Yup, its gonna be an interesting ride. Especially considering it will be mechanically and electronically limited to 30mph. I could gear it to do 55+ easily, and I know most people with that much excess horsepower would do just that. As difficult as it was to turn at 40mph, I see no sense in high speeds. Now of I were 5' and could ride a bmx bike comfortably, them 20" wheels would be the ticket for 40+ but then you run into all sorts of stresses on other componemts that make it far too risky. I firmly believe anything over 30 mph sustained speeds on bicycle components is foolish at best, deadly at worst.
*stepping down off my soapbox*