How about using some kind of spring loaded/clutch or something along those lines to actualy MOVE the whole deal in or out on the CRANKSHAFT? Basicaly the rod connecting to the crank could pull in at higher RPM's and extend at lower RPM's, this would have to work on some kind of enertia based system... Its feasable. I can tell you that (I DONT THINK AT LEAST) Anyone on this forum could build this thing... This would take HUNDREDS of engineers and techies YEARS to figure out.