How hard could it to be to build a two-stroke internal combustion engine (ICE ... was then able to manufacture the crank case, the cylinder and crank shaft and all the other pieces that make ...

It’s an Open Source Two-Stroke ... engine first produced in the early 1930s and continued production through World War II. This is a weird engine, with two opposed pistons in one cylinder ...

Its four-stroke engine used a pair of side-by-side pistons to make 2 ½ hp, driving a bike that could achieve up to 30 mph. Two-cylinder engines are complex and heavier than single-cylinder bikes, but ...