New Walking Beam Pop Can Stirling Engine

[jimlarsen]

I just finished another project and I am real happy with the results. I designed and built my first Walking Beam Pop Can Stirling Engine. I used the same air cooled pressure chamber design that I have been playing with in other configurations. I ran it for 2 hours yesterday, and it has been going about 30 minutes tonight. I am pleased with the way everything is so well balanced with the walking beam style of engine. Here is a link to the video:

http://www.youtube.com/watch?v=khBM9x_tFbM

Thanks!

[Aviator168]

One thing I never figured out is how people attach the PVC pipe to the coke can.

[jimlarsen]

Many of the antique engines that were employed to pump water used a mechanism similar to the small walking beam. So yes, they can be scaled up. One might say that this is a scaled down model!

As for the attachment of the PVC, the first step is to shape the pipe fitting so that it fits flush to the curved side of the can. Then glue it on with RTV Silicone. I used the 700 degree variety. The top of the engine doesn't get over 140.

Here is an example of one of those older engines with a walking beam.
http://www.rustyiron.com/engines/stable/ericsson.html

[Junkie]

Is the displacer cylinder in this engine made out of two separate drinks cans separated by the wood?
Nice engine, it's inspired me to build one.