this is my lego vacume engine one cylinder how to make it link- www.dansworkshop.com

This is another Lego engine I made that is powered by a vacuum cleaner, a little like my older engine. It has a much larger piston (8 Lego dots x 8 lego dots x 7 brick heights) which equates to a swept volume of about 275cc. The valve is 2 lego dots by 6 lego dots by 1.3 brick heights. There is alot of friction in this engine and the piston was a little too large for an engine made out of lego. Running the vaccum cleaner too high would cause the connecting rod to be pulled off of the rod connected to the piston if the engine ran too fast. In hind sight I would have made 2 cylinders with 2 valves each 90 degrees out of phase with the other so as to encourage smooth power delivery much like my previous engine.

Thanks to Anthony Liekens for his instructions. Have any suggestions as to how I should expand this?

My second LEGO “steam” engine run on vacuum. It’s a model of an early 19th century beam engine after James Watts design, the vacuum cleaner is running at lowest power and has no problem coping with powering the engine. I hope to get a small eletric compressor to power it instead. And before anyone asks; I built this using my head, there are no blueprints or CADs!

This “steam” engine runs (backwards) on vacuum cleaner power. The motor generates approximately 700RPM. The design is based on Daniel B. Hartman’s Lego steam engines.