yes, make a pulley on the output shaft. I guess I could take a sprocket and grind off the teeth and machine a pulley to slide over and tighten on the ground down sprocket. The chain creates so much noise that belt drive might be pretty cool. The problem is the belt will have to be skinny and might be too weak.
Hey, Amigo, it CAN be easy to do belt drive, just make a jackshaft, chain it to the engine, and belt it to the wheel! a little well-aligned chain will not make much noise, and the belt-drive is nice and quiet, and sucks up a bunch of the drive-systems "out of round" vibration. You can shim the engine forward to adjust the front chain, and use a spring loaded Idler pulley to take up rear slack. Many opportunities to select a gear ratio this way, tho very few sheaves are factory made anymore. I use Whizzer.
I want to stay away from using a jackshaft because I like the simplicity of a straight chain. I will try mating a belt pully to a sprocket and let you know how it goes. It would be pretty cool to have a belt driven cruiser. Just one more thing to make my bike a little different.
what materials other than metals would be okay to make pulleys out of. I have acces to autoCAD software and a lasercamm (2-d laser cutting machine) at my University and would be able to make exact fit pieces.
Man if I had access to that cutter. I could make a sweet sweet drive.
For starts I would grab a chunk of aluminum and make a one piece rear wheel with the belt track on it (one piece).If I was you I would hit the cad program and go to town.