Also for $29.99 is the Exploring Kid Steam Engine Kit. This mostly plastic kit, when assembled, includes a boiler and tube leading to a piston. Due to the open flame and numerous small parts ...

We all know how a conventional internal combustion engine works, with a piston and a crankshaft. But that’s by no means the only way to make an engine, and one of the slightly more unusual ...

Free-piston engine generators (FPELGs) and linear machines represent an innovative approach to energy conversion, combining simplicity in design with high efficiency. These systems operate without ...

Four-cylinder engine fans have multiple stroker engine kit options from 4 Piston Racing with prices starting at just over $2,000 for K20 and F20/F22C options without crankshafts and climb to over ...