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You were doing well until you said that you were using floral foam, and a gas flame for heating, could you find a tin can the right diameter, cut it down to the right hight, and seal the open end, and use that as a displacer. Whikle the foam may not melt, what gasses is it giving off, it's plastic ...

coleman01.jpg Hey all, I've been working on a little gamma engine for a while now and here she is. The displacer chamber is a Coleman lantern globe, part of Airpot glass cylinder graphite piston set, and a brass fitting with a glass tube inside for a displacer gland. The end caps are aluminum sheet...

https://www.dropbox.com/s/d70jfqvwxsdb4pd/Photo%2023-04-13%2013.42.33.jpg Hey guys this is what it looks like so far. hope you can open the picture. btw.the connection rods points beside the cylinders because we haven't got the pistons yet. have a nice day Hey, Is it this motor? https://photos-2.dr...

Couldn't one "play" with the focal point of such a dish collector and somewhat govern the heat input? I mean just because there is potential to generate a pile of heat at a pin point doesn't mean one couldn't adjust the focal length to spread that heat over a larger area. Why run at full t...

All, I'd like everyone to be aware from the start that I'm NOT posting about this topic in an attempt to place myself in position to become a potential moderator. If nominated I will not run, and if selected I will not serve. I've done that job, and it's a job (forum moderation), I simply cannot app...

First off, I know this site is completely that of our gracious host to do with as he will. I'm suggesting that it is time we have a couple moderators, which must be even tempered regulars here, to keep a watch on the pub while Boyd is busy. To spammers it might look like they are posting their wares...

Chris, I'm trying to build an LTD (or pretty low TD) engine, so the running heat source isn't the issue here. I'm talking about making the little glass parts and which glass to use. Flint glass can be worked with a propane handi-torch, whereas it takes the oxy-gas torch to flame work Pyrex. I know I...

After looking into the various types of glass I've hit a wall. Borosillicate (Pyrex) glass requires a oxygen/gas flame whereas flint glass will melt in a propane torch flame. Boro is much stronger. Not sure if I wanna invest the money in a oxy torch and learn to flame work glass that bad. Hmmmm. Jus...

Hello all. I'm a retired Tool & Diemaker, living on the shore of Connecticut in the US. I just completed a Sterling engine from myfordboy's plans. I'm looking forward to taking part in the Stirling and Hot Air Forum, and hope that I can contribute in some way. regards Ed Hi Ed, Welcome. Can you...

I have been considering the thermal qualities of glass and I'm worried that the ability to reject heat will be an issue. I'm worried that the heat will creep throughout the engine without some way to rid the engine of that heat. What I mean is the glass isn't good at accepting or getting rid of heat...

Nice, but acrylic?

R

ETA< Oh, I see the acrylic base now. I was so focused on the engine I missed that the first time through.

How about shifting a liquid using the spin as a self governor? Surround the spokes with rubber tubing that will squeeze the liquid toward the center at lower rpm and then "grow" at the rim as the speed picked up. I'm not sure this is a good means by which to extract more torque. If you can...

I was day dreaming at my work today about building a LTD Stirling from almost entirely glass parts. This would require either welding borosillicate (pyrex) or using adhesives capable of withstanding the stresses. The displacer might be blown from one piece or molded. The displacer gland/rod, and the...

Hi Ian, one of the most important aspects in desinging SE is the sealing. I would like to use round rings made by Viton (Dupont) or Vulkollan (Bayer). These two plastic materials have high resistance to mechanical stress and are often used to make gaskets and o-ring. What do you think about them? D...

Welcome, and have fun!

What interests you about Stirling engines?

R