Flame Eater Crossbeam Vacuum Engine - EngineDIY

Vacuum Engine: bit.ly/3IAtcde
Vacuum engine is also known as “Flame-Licker Engine” or “Flame Eater”, a simple but magical machine that demonstrates the conversion of heat into mechanical motion.
The running speed of the engine is fully adjustable. It looks more elegant and allows you to fully understand the operation of the beam when running slowly.