Anybody ever mess around with a Stirling cycle engine? My grandfather gave me one that is over 40 years old, but it doesn't appear to run anymore. I cleaned it up today and gave it some fresh lube, but it just couldn't get enough uumph to keep the flywheels spinning. I'd love to take it apart and try to fix it, but I can't figure out how to get at the internals.
Here's a couple pictures: