Junkyardnut

I am not sure if you are aware of a company named SES which is short for Stirling Energy Systems (http://www.greentechmedia.com/articles/read/stirling-energy-systems-dish-engine-solar-maker-files-for-chapter-7-bankrup It was the most promising business about more stirling engines but it went kaput! The company was passed over for photovoltaics in a huge project . Maybe too many moving parts to keep up with maintenance. You can still buy them and use them to run your room air conditioners if you care to.. Also, click http://www.infiniacorp.com/en/ They are probably the next generation on stirling engines.... check it out!

Allow me to point you to http://www.aip.org/history/heisenberg/p08b.htm Hope this will be a very helpful dead-end for your quest !