Goldstirling

The double rocker is the predecessor of he quad rocker Stirling Engine. It is a good looking engine and only takes half the time to build as the quad rocker 

A set of mostly full scale drawings is $30. If ordered with another set of drawings the total price is $50 dollars

When this engine runs it has a lot of moving parts. So it looks incredibly mechanical. With the 90 degree cylinder arrangement it is well balanced and runs smoothly.