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Thanks Nick. I guess I'll have to scrounge up some cast iron at some point. I'm going to try the aluminum piston first, and snag a piece of that graphite. Next up would be the brass cylinder. By that time the budget should be back in line and I can put together a decent materials order. I've...

Or car stereos?

Great runner, Tony. And a beauty, as well! Very well done! :bow:

Now that looks mighty damned nice! Looks like it'll be a very comfortable place to work.

Way to go, Chuck! Congratulations! th_wav th_wav

Must be the day for Gremlins, Dean. I had them all day at work, as well.

Thanks Bill and Gail. I figured the steel piston was a non-starter but had to ask. I was taught to always use dissimilar materials for moving surfaces, that rule has worked well through the years. Stan, thanks. See below... Thanks for the link, Dean. I have the graphite available, I just have...

Sam, thanks for checking in. I don't think I'm ready to have cooling fins cut in me just yet ::) Thanks for the heads-up, Gail. I'm not satisfied with the current parts, so I may remake them. The displacer cylinder is nice and smooth, put the power cylinder seems to have a rough spot in it I...

Thanks for the support, Doc. We've had the humidity too. With 3 major rivers running through here, plus a couple minor ones, there is no shortage of humidity. The heat must be getting to me. I was reviewing your build thread and when I realized there was still something I needed to do. Well...

Another short, hot day in the shop. Sorry about being a little short on pictures. It’s just basic lathe turning, nothing spectacular about it. And it’s just been too dang hot in the shop. The power cylinder is 12L14 steel, 1.125 inches long. I still need to do some finish work on the...

Nice work on the bearing blocks, Arnold. I can't believe you did that by hand.

Looking really sharp there, Dean. At first glance I didn't like the all red look of the fan, it seemed to be too much. But the more I look at it the better it fits. Excellent choice.

Bob, thanks for your support. Actually, I'm not very patient at all. If you look close you'll see a bent fin where my lack of patience got the best of me. Before I even finished the first groove I was thinking "Ya know, you really should have gone for the water jacket." Arnold, very good eye...

Got a little more done before the heat chased me out of the shop. I finished the cold end of the displacer cylinder using one of the pre-drilled blocks of aluminum I picked up some time ago. I have no idea what grade it is but I don’t think it’s 6061. It machines quite well. Since I had to...

That's great news, Bill. It's always nice to hear there are still companies that stand behind their products and step up to provide the best customer service possible.

http://www.youtube.com/watch?v=nyhtLmQTPpA

Nick, thanks for the support and welcome. Stan, thanks for dropping by. Yes, stainless is better but that does not preclude using other steels, too. I don't have any stainless at the moment big enough to use, so I used what I had on hand. This will work well. Optimal would be a ceramic, but I'm...

The door looks very cool, Dean. I hope you're going to leave it unpainted. The bare brass breaks up the black surface just enough to add some depth. Very cool, indeed.

Commiserations all around, Zee. Have another cookie, and a 'tini. I gotta pile on with everyone else. Give a rest for a few days. Let your noggin' work on it while you're not thinking about it. Solutions will come to you, if you don't force them.

Thanks Zee. Everybody passes, there are no failures here just problems that haven't been solved yet ;D And we are ALL on probation... ::) Thanks Dean. Yeah, I've noticed that, too. We had a spate of mine engines, then it was hit-n-miss. Now it's Stirlings. Not that I mind, I like them all and...