Maker B Builds a Mini Four-Stroke Engine

Maker B has built a small four-stroke engine. To start things off, he created the piston using a Sherline lathe and milling machine! Pretty impressive for the tools he chose. He also made the connecting rod, valve, gear, crankshaft, camshaft, engine block, cylinder head, carburetor, and flywheel.

Excuse the play by play of the video, but it is an amazing feat of craftsmanship. After those parts were crafted, Maker B assembled the engine. He began by inserting the connecting rod into the piston. Next, he put the camshaft and tappets into the engine block. Then, two springs, which are for the intake valve and exhaust valve, were inserted in the engine block. Afterward, the intake valve and exhaust valve were placed in the engine. The cylinder liner was added along with the crankshaft and bearing housing. Maker B then placed the gearcase on the engine block. From there, the cylinder head was installed on the top of the engine. To complete the final assembly, Maker B installed the carburetor, timing disk, and flywheel.

Additionally, the engine is equipped with a magnet on the camshaft. A Hall-effect sensor, which detects if the magnet is close by, was placed on his creation as well. To test the engine, Maker B hooked it up to a container of fuel and regulated DC power supply. The valve and ignition timing had to be adjusted after being tested for the first time, which allowed the engine to run successfully.