Stirlingengineforum.com

If you increase the pressure in a motor, you need to increase the amount of heat by a similar amount. Increasing the amount of heat does not mean that the temperature increases, but a larger amount of heat at the same temperature hat you started with, just picture the burners for a gas torch, they a...

I was looking for something else on google the other night, and came across an LTD motor with a regenerator system built into the displacer, and it was shown in a vidio running at high speed, although I'm still a bit sceptical. With this type of motor 100rpm is very good, and 60rpm is about average,...

I think you say the displacer is 4.025", I would suggest that this is a bit short, 6" is nearer the mark. In your diagram can the cylinder be arranged so that the water jacket is a little nearer to the top of the table, this also would lower thehot end, and the center of gravity (help to s...

Shanex-2, maybe who! Ian S C

The only place I'v come across roll sock seals is the front disk brakes of a Holden station waggon(Aussie GM), there was'nt much problem there. The problem would be with the oil balance system. You would have to insure that the cooling was up to it, or you will soon cook the seal. If you can 1000deg...

kaltblutig, as a general rule the volume of the displacer cylinder is a little greater than that of the power cylinder to the ratio of 1.5: 1, a little more might not hurt too much. The displacer should be about three times its diameter in length, and a gap of 1/16"would be good, and I would go...

Alibaba, Interesting. On another site there has been a discusion on building machinery (in this case a tool and cutter grinder) with epoxy concrete ( it's being used for building machinery in Germany), the cerment is mixed with epoxy resin instead of water, and cast in molds, it does not shrink like...

Aviator168, I think a properly designed and installed roll sock seal should last a good few thousand hours of running. I don't think the design of one of these engines is a home workshop project, but I could be wrong. The seal is made of Polyurethane, and highly flexable, I think that the oil spring...

Shanex-2, if you look at the Ross Yoke motor that is sitting on he bench for its first run , you can see the yoke, that open area there has a cover, yet to be fitted when I get round to designing a n effective low friction seal for the crankshaft, then I'll try to run it under pressure. The first se...

chriske, sorry mate, it does sound good though does'nt it,(maybe too good). Ian S C

Been digging a bit more,it seems that in 1884 some one with the name of Fleeming Jenkin suggested that all hot air engines should be called Stirl;ing engines.but that found little favour amoung manufacturers of the time, it was later taken up by Phillips in 1937. In the 1970s Graham Walker suggested...

Chriske, What temperature does your LTD run on, If its runs on hot water (boiling), and ice, thats near enough to 100 deg C differential. Have you tryed it both with, and without the regenerator, and if so what sort of difference does it make. Ian S C

One idea that I quite like can be found at REUK.co.uk look for simple solar tracker concept, no fancy electronics, self powered. Ian S C

It was in 1937, when Phillips built their first hot air engine, it produced 16W. The project manager wanted a suitablename for the engine type, and picked Stirling. The engineer's name was Rolf Meijer. Ian S C

With the Phillips engine the tubes forming the cage that the motor is mounted in are the air reservior. Oh, by the way, it was a Phillips engineer that thought up the name Stirling for hot air engines. Ian S C