Jerry's Original "Ringbom" Stirling Cycle Pumping Engine

"The Ringbom stirling cycle engine is unique in that there is no mechanical connection to the displacer. The displacer operates itself from the pulsating pressure variations within the engine. The engine has only four moving parts.

The engine makes a distinctive thumping sound like no other engine and runs at a fairly constant speed of around 700 RPM when powered by my Mini Propane burner which is highly recommended (see the 'Other Interesting Projects' menu).

This is a water cooled model and the plans also include an engine driven oscillating water pump that has only three moving parts and no check valves! It is your choice to build the pump or to supply cooling water to the engine by other means." - Jerry

Jerry's Original "1779" 24 Pounder Naval Cannon

A close replica to one of the 24 pound guns used on the ship USS Constitution.

The original guns were 10 feet long and fired 24 pound iron balls. Canons of that era were usually of cast iron but sometimes bronze, and with oak carriages. Everything on the model works just as on the originals. If you want to be historically correct rather than have a polished mantle piece like mine, the barrel and all fittings should be black and the carriage of oak. Either way, it is an impressive model that will take "center stage" on your fireplace mantle, book shelf or desk.

Specifications: Scale: 1/10th, Length: 12-1/2", Height: 4-1/4", Bore: 9/16"

Jerry's Original "Vickie" Victorian Stirling Cycle Engine

"Stirling engines have no valves, carburetor, ignition system or boilers and they run almost ghostly silent. Properly made, they will run flawlessly every time a source of heat is applied!

'Vickie' is a stirling cycle engine of modified Heinrici type with elegant victorian styling designed for pleasing looks as was applied to 18th and 19th century engines and machines. Three fluted columnar legs and two stylish crossheads of differing style blend perfectly with the curved and angular lines of the engine frames." - Jerry