Stirlingengineforum.com

The only other alloy I heard of people using is aluminum-bronze alloys. I have no experience with either constantine or AL-Bronze alloys.

Found a link to a cryocooler design book that may interest a few. http://books.google.com/books?id=pgY45uroaGwC&pg=PA407&lpg=PA407&dq=easiest+way+to+fabricate+regenerator&source=bl&ots=8qm1LM-CdR&sig=Rwn2GHIVIgxZYycy4d2V-5m9N1U&hl=en&ei=39-oTe_JKNC3tgf7jtXeBw&sa=X...

For a small engine, yes. For a big stirling engine, no. This is what I mean for the large stirling engine. The flat jawed geared pliers are made by knipex and are a favorite among many.

According to many, stainless foil, placed in layers, spaced apart with shim stock, and bolted and sealed together. Copper would be nice, but thermal short circuits can occur. It must be thermally isolated from both the heater and the cooler, or thermal short circuiting on the outside of the device w...

One of my ideas is to use flattened tubing to increase surface area and heat capacity. The evenly flattened tube has a rectangular path for the gas to flow, and the flat shape lends itself for heat transfer in either direction. The increased amount of metal per unit volume of gas should also increas...

Well, it looks like a change of plan for the heater tubing. More like change of flare. Sorry guys, I have to use a true ISO bubble flare that is flattened out a bit so that it will seal better and be less sensitive to changes in angular contact. This thwarts my universal compatibility plan. The flat...

Google search likes "10 mm". Otherwise, both work for me.

Ahhh yesssss! The holy grail......found at last!
A thousand thanks, Jim.

As mentioned in my previous post, the stroke on the research paper engine is too long to develop any decent RPM performance in my opinion. As you will observe, the regenerator is too small. Using the surface area of the displacer piston is effective.....for a heater or cooler, but is nonfunctional a...

Oh, I am a lousey machinist....no doubt about it. But flies are great scavengers. Heh. A thread should be started on scrounging parts so we can exchange our parts supplies.

Now, I will show you what most of you already know. Ring sealing is not merely a function of ring material and the land width, but deals with where the gas will go. A top compression ring has a bevel on the top INNER part of the ring. This allows gas pressure to that normally pushes the ring down to...

So now, I need not worry about piston rings...the the 3/32" width of the rope seal is a perfect fit. I just had to run it around the ring land twice. Up front is the 2-151 ptfe o-ring in question. Ah. forgot to post the link to the ptfe and graphite seal packing. http://www.hardwareandtools.com...

Found a solution in the hardware store while I got out of the house and all the savage tubing in it. Here's a link to the screen shot. Teflon and graphite valve packing. Found in the plumbing section and it was cheap. Now, my pistons need not worry about sealing. Ha. The size "2-151" PTFE ...

Well, the real question is, how rapidly can adsorption remove the heat from a stirling engine? I am not sure of how to scale an adsorption system to fit a specific size stirling engine. What BTU rating are the average RV fridges? All the ones I have seen were old and only reached 45-50 deg F. I imag...

I think all this tube bending is getting to me. I am beginning to make vast assumptions these days. Might be the zinc coating of the tubing polluting my system. Maybe I will develop a tick, too. Oh well, at least the machinist plans are useful. I definitely would change the hot and cold heads drasti...