The cylinder blocks, valves, pistons, and crank rods are Briggs & Stratton, the rest is made in the workshop. It’s a design with the valves on the outside — so instead of the single camshaft ...

Bugatti were the first to create a U-engine, and their version was a giant, 16-cylinder unit for use in medium-sized ...

Using pneumatic cylinders from the LEGO Technic series, [Brick Technology] starts by getting the basics working with a single-cylinder design ... back and forth as the crankshaft rotates.