Vacuum engine

[CaptainKyle]

This is a pretty cool little engine that my buddy built it basically runs off pressure diffrence there is nothing electrical on it we were running it off of alcohol last night it will run off almost any thing. http://www.youtube.com/watch?v=AuWnj4z0eaI

 

[Fire-medic]

Re: Vacume engine

Reminds me of the vintage steam toy one of my brothers & I used to run on soild fuel bricks:

http://cgi.ebay.com/WILESCO-D10-TOY-STEAM-ENGINE-WORKING-CONDITION-/140539464741?pt=LH_DefaultDomain_0&hash=item20b8ce0c25

There was a very distinctive odor from the solid fuel brick you burned to boil the H2O. This one has a ball governor and they all had a safety pressure relief valve. Remember the leggless guy who played the villain in Wild Wild West? I think it was Kevin Brannagh. He had a powered wheelchair with something similar, except his ran on coal, I think.

So when you scale that toy up, what are you gonna power with it?

 

[CaptainKyle]

Yeah looks pretty simialer. Its a pretty neat little conversation piece.

 

[RaWarrior]

Yep...it's called a Stirling engine. Been around forever. Runs off differences in heat within two chambers, expanding and cooling air force the piston back and forth. You can build one out of soda cans, a balloon, and a candle...theres a video on youtube somewhere of it.

Problem is the make absolutely squat for power. High RPM, extremely low torque. You need one the size of a closet to equal a typical lawnmower engine.

 

[RaWarrior]

double post

 

[CaptainKyle]

Yep...it's called a Stirling engine. Been around forever. Runs off differences in heat within two chambers, expanding and cooling air force the piston back and forth. You can build one out of soda cans, a balloon, and a candle...theres a video on youtube somewhere of it.

Problem is the make absolutely squat for power. High RPM, extremely low torque. You need one the size of a closet to equal a typical lawnmower engine.

Yeah my buddy is a machinest so this one is precision built. I know you can build them a lot simpler but this one is precision & will probably last forever.