Stirling cnc

http://www.cnccookbook.com/CCStirlingGenerator.htm cnc stirling engine, Lots of links to designs

http://www.dmoz.org/Science/Technology/Energy/Devices/External_Combustion_Engines/Stirling_Engines/

http://www.bekkoame.ne.jp/~khirata/

http://www.cnczone.com/forums/showthread.php?t=22227

http://www.ent.ohiou.edu/~thermo/me321/quiz.info/StirlCogen/StirlCogen.html