When I was a kid in the 70s, I bought a two cycle opposed twin engine very similar to the Maytag from a junkyard to put in a minibike. I wish I could remember more about it, but it was old then. It had a gas tank mounted on top, a pull starter, and a common exhaust manifold. With no idea what size it was, or power it would produce, I just figured with two cylinders it would go twice as fast. My dad and I were able to fit a centrifugal clutch to it and get it installed in a pretty basic frame, but with pretty dismal results. It actually ran well with no load, but didn't produce enough power to move a mini bike at anywhere near a desired speed. I hadn't thought of this in years, and it was just one of many steps in my motoring journey.