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I have some questions in reference to your previous posts: I understand piston displacement (in cubic inches) or swept volume to be one and the same. So if the volume that my power piston displaces by its” total stroke = 3 cubic inches, I would multiply that by 1.5 to get a displacer cylinder volume...

Thanks once again for the replies. I also belong to the Home Model Engine Machinist Forum where many of the members also build Model Stirling engines with machinery they have at home. Some of the machine tools they own are full size but many of the members seem to own the smaller but more capable ma...

Thank you for the reply and the pointers. I have built two engines already, one from another persons’ plans and another from my head that does not deviate too much volumetrically from the first engine I built from the plans. They are fairly large for model engines standing 17 and 24 inches respectiv...

If I wanted to build a Gamma walking beam engine from scratch, what would the "rules of thumb" be that I would have to follow in order to assure a working engine when completed? I guess what I am asking is: How do I calculate unswept volume of displacer to power piston? What would I want t...

Thank you for the compliment.

Regards,

Sched44

Some details: First two images of the Walking beam horizontal Engine: -Made as per Mr. Boyd's plans online. -Base measures 18" x 24" -18” high at top of beam support -Stroke is 2 1/4" -I converted the engine to propane from Sterno. (Warning: someone experienced in propane installation...

http://www.uploadgeek.com/thumb-8D40_4ABFF642.jpg Larger image at: http://www.uploadgeek.com/share-8D40_4ABFF642.html http://www.uploadgeek.com/thumb-75E7_4AC00366.jpg Larger image at: http://www.uploadgeek.com/share-75E7_4AC00366.html http://www.uploadgeek.com/thumb-A013_4AC00366.jpg Larger image ...

Let me try this. The last post was a goof!



Got it!

Larger image at:

http://www.uploadgeek.com/share-02B7_4ABFF179.html

Sched44

Please see next two posts.

Sched44

How would I post an image on this forum? Please tell me how and I will include pics of a new vertical I just completed.

Regards,

Sched44

The engine ran ok; I just wanted to give it a bit more energy to perform the work of the water pump. I bought an inexpensive camp stove at Wal-mart, cut it to the desired length containing one burner, made it adjustable up and down and use the side where the propane tank attaches. I remotely mounted...

I built the Walking beam engine as per the plans online. It runs well and to add some running time, I added a pump and a cooling loop made from quarter inch OD soft copper. It drags the engine down because of the added pumping load and if I add a bit of butane heat to the Sterno it runs along just f...