Don't know if this has been posted before or if the gentleman that built these is a member here. I feel these engines are worth a look. They are interesting and very elegant.
[ame]http://www.youtube.com/watch?v=_KAaUTLQJPk[/ame]
Kenny
[ame]http://www.youtube.com/watch?v=_KAaUTLQJPk[/ame]
Kenny