Please be careful. Your craftsmanship is unquestioned, but that thing does not look at all like a conventional motorcycle. A motorcycle meant for high speed travel looks like a motorcycle for good reasons: the steering geometry, the center of gravity, the suspension, the tires, the wheels, and the brakes are meant for that kind of service, for roads are not always kind.
I suffered some serious injuries on a motorized Schwinn bike last October when I hit a poorly-maintained manhole cover and went sailing over the handlebars. Broke a collarbone and my neck, but I've recovered completely. The helmet--a silly bicycle helmet--saved my wretched life; half of it was scraped away on the pavement.
I've since purchased a real moped--1984 Trac Clipper, weird to work on but built like a tank--and I wear a real motorcycle helmet thereupon.