I have a 79cc Predator and an agk jackshaft. First, let me say the rear wheel is using a moped hub and 11g spokes, so should be able to handle a good amount of torque and horsepower. So here is my idea. Instead of using the standard 11t maxtorque clutch, I could use a clutch with a belt pulley or even perhaps just swap out the toothed gear on my existing clutch for a pulley, I know they sell replacement pulleys for maxtorque clutches, just not sure if its a direct swap or not. Then I would remove the toothed input gear from the jackshaft and swap it out for a variable pitch pulley, the kind you twist manually to adjust, but instead of actually having to twist the pulley itself by hand, devise some sort of mechanism whereby the pulley could be adjusted via a handlebar lever? Does anyone think this is possible? Anyone have any suggestions on how to devise a shifting mechanism for the variable pulley? As far as to why I want a manually shifting belt drive, belt is quiet and a bike really only needs 3 speeds, medium speed for cruising, low speed for climbing and high speed for getting out of a jam quick. Any thoughts will be appreciated.