Stirlingengineforum.com

Oops! When I said the displacement ratio of Senft's LTD engine was 15, I quoted the wrong engine. The ratio he uses in N-92 hand held engine (designed for 6degC dT) described in his LTD Stirling Engines, is over 150 - nearer the ratios I've used for really low dT. Sorry to be so misleading when I m...

Gamma kind engines have a displacer and energy piston, similar to Beta machines, however in different cylinders. This allows a practical finish break up between the warm exchangers associated with the displacer cylinder and the pressure and expansion work space associated with the piston.

Actually, a variety of pressure and warm. That's why they have gleam attaches to help to start the engine when it's cool. The burning time is then established by when the fuel is shot instead of spark plugs.