Hello, I have been into old bicycles for quite some time. My first motorized bicycle was an old 26" JC Higgins with a Sears motor lever-operated over the front wheel. Now I will be going after a boardtracker themed bike. I hope to use either a worksman frame or an old 20's Hawthorne frame. I already have the hawthorne,but I am reluctant to chop it. Anyway, I hope to use a 1984 Briggs and stratton motor. It is a very old-school 3hp engine, and I think it will look great on a bike and perform well. My other option is to take a rollfast canti frame and cut the canti bars out and weld in a straight bar , but if I do that then i want a straight top bar as well. I'm starting this thread so that I don't have to ask questions on other members' threads. So far it looks like i will use the stock engine with a slight upgrade(larger jet) to the carb. Also exhaust upgrades. I plan to use a jackshaft assembly. For the right side(bicycle side) I plan to use a morrow wheel and skiptooth sprocket/chainring. To start me off, can anyone tell me if the standard hub bearings will handle the speeds of 35+ if I use automotive bearing grease? I am currently starting on the frame assembly and will post pics in the next couple of days. Also I'll post pics of the motor, but I plan to disassemble and repaint like cast iron with some vintage touches. Still, I'll show my start point for reference. I currently plan on using either a sprocket attached to the left side of the rim, or a 16" rim as a pulley with a belt-drive system. I haven't decided yet. I personally like belt-drive, but chain may be simpler. Also, do jackshafts have the ability to incorporate pulleys instead of sprockets? Thanks