The parabolic mirror reflector focuses sunlight on the heat cap, providing the energy to run this commercially built engine. The motor itself is 8.24″ long by 3″ wide, and has a 3/4″ bore and 3-1/4″ flywheel. The polished aluminum mirror is 18″ in diameter. The engine can run at speeds of 2,000 rpm or more. It has its own cast base, or the motor itself can be attached directly to a camera tripod for easier adjustment to focus the sun’s rays.
The engine can also use an alcohol burner as a heat source, and is available from PM Research in Wellsville, NY. See their website for more.