Now this is the kind of site I can get into! I'm still big into offroading sites, but have been getting seriously interested in motorizing a bike, for commuting, and for fun. So now that I've found what appears to be the be all that ends all questions for putting an engine on a bike, I see I have alot of researching to do. I have a Honda Trail ST90 engine that needs a piston and rings, that I want to put in a heavy framed mountain bike. I know that'll require a motorcycle license, which is fine, but I wonder what the DMV would say, when I show up with a 90cc mountain bike? :grin: I've also been thinking about looking for a wrecked but running 4stroke pocket bike, for another bike project So, basic rundown of me - married almost 17yrs, 3 kids, 2 Broncos, a Scout II, and a Toyota pickup. Jack of all trades, Master of none, and welder/fabricator. Currently in between jobs(ha, unemployed). Also looking to get my house power and utilities as much off the grid as possible.