16 Cylinder Hot Air Stirling Engine: https://goo.gl/K9kD9K
(5%off: 45b028 )
10% off: https://goo.gl/ydu2YC
Educational demo engines: https://goo.gl/dzVYDN
Banggood.com kindly sent me this engine to show.
I often get requests to supply my designs fully built or as set of machined parts. I don't have time to do this as I have too many of my own projects on the go.
The engine shown here might fit the bill for someone who does not have the tools, skill or time to make a model engine but wants to own one.
It is a very attractive and neat design and runs well.