Hi, I'm James, I've never built before

hm, thanks. I'll look more into friction drive. I guess I would just have to remove my rear fender.
 
Yeah, I figured that vertical support would get in the way.

You suggested earlier that I consider getting a more powerful motor. My understanding is that anything 50cc+ is considered a motorcycle. Do the people that put, say, 80cc motors on their bikes just ride them on private property? Do people just risk it on the roads? Or do they go out and get them registered? I'm sure it varies, but what tends to be the norm?
 
Take a look at this. This guy is using a modded GP460 45.7cc engine with a Staton friction drive and I can tell you he is zooming and it's impressive for a friction drive. Not saying you gonna reach this level with your bike but it is something to strive for once you have the base system up and running well.



Well, the motorized bicycle laws depend on your state. Before you do anything probably should double check everything. Here in Wisconsin it is anything that can propel a 180lb person up to 30mph so it can be pretty much anything, LOL. I went almost 40mph today and I really don't think cops care. The 80cc 2-stroke motor kits are really 66cc and you can't tell them apart from the 49cc kits so the difficulty of proving that it is above 50cc probably helps those guys.

I think a lot of folks just start with something simple like the HuaSheng engines and mod them for more utilization of power. And, next season, if they want something beefier they would have had the experience of operating and maintaining a basic HuaSheng to be able to do so.
 
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