www.greenpowerscience.com This is the best off the shelf DIY STIRLING ENGINE start we have come up with so far. This Stirling Engine has shown signs of successful operation. It also works excellent as a Steam Engine. I have another compressor that I am converting into a DC motor:-) These compressors cost about 0 on EBAY. Make sure you buy the compressor pump at a 90 degree angle. This based on the Alpha Stirling Design that you can find here: en.wikipedia.org

Project: Build a stirling engine that can do some usefull work. This is an on-going project, the engine is not yet finished but it works! Built around 4 stud bar colums, the displacer cylinder is a stainless pasta tin, the piston is an old footpump cylinder (with a new cast polyester piston). Old saucepans form the furnace (bottom) and the water jacket (at the top) which creates the heat differential between the two ends. The oscilating piston is connected via bit of flexible garden hose, and the flywheel is cast iron. The plan is to use this to pump water for the garden pond, using anything that burns as fuel. The bricks form a makeshift fire box as this is the first time the engine has run on solid fuel, in this case a small wood fire. Thanks for viewing, I will upload more as the engine develops.

Hi, I put my other engine to one side and have started working on converting one of my old air compressors into a hot air engine. I cobbled this lot together to check that the concept works before building it properly. Really did not expect it to run like this first try (sorry about the poor lighting, i wasnt expecting anything worth filming) The compressor is as original, but with the valves and piston rings removed. It is pretty much a beta configuration, with a wire wool regenerative displacer piston – adds a bit of friction but seems to be worth it so far. The linkage will allow for conterbalance weights as I inted to run it vertically so that I can lubricate the power piston without contaminating the regenerator. Im thinking of using graphite to lubricate the displacer rod – as this is on the top of the engine at the hot end so I cant use oil. My theory is that although it is easier to put a fire under the engine – heating the top would maintain a better temperatire difference as the heat will naturaly rise upwards. Hope you watched the whole video as it even managed to run on residual heat in the vertical position. If it runs this well with bodged linkages and incorrect ballancing – this things going to be a beauty when finished!!

SOLAR POWER TRAINING COURSE This is a follow-up STIRLING CYCLE ENGINE video to the Compressor Conversion. The original design required too much heat on the displacer side due to excess volume inside the piston. By adding a large displacer, you reduce the working gas volume and dramatically increase the surface area to the heat source. The piston attached to the displacer is exposed to 80% less heat than the previous design preventing damage to the rings, also reducing wear and lubricant breakdown. The heat sinked cylinder on the hot side is also saved from heat damage. The

This video shows the new dead simple linkage that activates the displacer piston. The crank pin is from the pedal of an old excercise bike. It has ball bearings at both ends of the tube so it has no problem with the side loads caused by the offset at the the top of the conrod. As you can see it is still very much a work in progress but I am very impressed so far – it still does not have a cooler and you can see how far down the heat has spread. Imagine how well it could run with a propperly insulated burner assembly and a water jacket at the bottom! You will have to excuse the noise – I temporarily wired a block of steel to the flywheel to help counterbalance and rattles and ‘dings’ Hope it was worth waiting for, subscribers. Im sorryit took this long to update. (if you havent already go and see my other vids and the evolution of my engines) Thanks.

Hi, here is a better recording of my experimental engine set up – Im looking forward to building this one properly, because if it runs like this now it should have some usefull output. Please see the earlier video for more info about the engine Btw it seems to run better vertically even though it is not yet balanced – there is less drag on the displacer piston rod in the vertical position and all the energy used to lift the heavy linkages is released again as they come back down – as long as the flywheel can store enough energy from the power strokes to get a full rotation perfect balance is not a neccesity.

This is an update on the progress of the Stirling Engine created from a standard air compressor. This hot air engine should finally get some power. The piston rings were removed as the machining of the pistons was very good. There is still good compression. The ring removal decreases friction dramatically and will allow for a good cycle. The Displacer is a Bikini Spray can that I got to fit perfectly. At the end is the ghost of Robert Stirling. Just kidding, think I have been working too hard.