I've thought about machining a rod for a Ryobi out of aluminum to replace that stamped steel stocker. Lot's of ideas, not enough time.... I don't really think the crank would be an rpm limiting factor, just that connecting rod.

Got a Frank Bowman ring coming for this one; should arrive tomorrow I believe. When I finish it up and get the big Tiger Moth biplane back in the air I can go back to work on my "stroker" BME twin Echo 23.6cc project.

AV8TOR