Search found 2148 matches

by Ian S C
Mon May 07, 2018 4:05 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: "Hi...We are new here!" First posts here (or anywhere is OK)
Replies: 424
Views: 109033

Re: "Hi...We are new here!" First posts here (or anywhere is OK)

Yorky, go for it, at least I will follow along. Oh and welcome to the forum.
Ian S C
by Ian S C
Sun Apr 29, 2018 3:08 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: A Stirling theory question on average pressures
Replies: 5
Views: 784

Re: A Stirling theory question on average pressures

I tried a snifter valve on a couple of my engines, but found there was little if any power gain, so I gave up. Some people have found quite a bit of power gain, maybe my machining is too sloppy.
Ian S C
by Ian S C
Fri Apr 27, 2018 2:03 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Philips MP 1002 CA
Replies: 11
Views: 1195

Re: Philips MP 1002 CA

If you can't get the magnets up. new magnets from steel or cast iron incorporating some rare earth magnets is a possibility, but you have a good chance, I have a remagnetiser, and rejuvenate magnets for old automotive magnetos.
Ian S C
by Ian S C
Thu Apr 26, 2018 2:27 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Philips MP 1002 CA
Replies: 11
Views: 1195

Re: Philips MP 1002 CA

The square one with two 20uf capacitors in parallel would be the same as one at 40uf.
Inside the flywheel there is a centrifugal brake that governs the speed to 3000rpm, seems a bit crude to me, but I suppose it works.
Ian S C
by Ian S C
Wed Apr 25, 2018 1:49 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Philips MP 1002 CA
Replies: 11
Views: 1195

Re: Philips MP 1002 CA

It is an AC unit. I doubt that it is a diode(the round disc), does it have any writing on it?
Ian S C
by Ian S C
Sun Apr 22, 2018 4:36 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling power generator
Replies: 14
Views: 1393

Re: Stirling power generator

The bore of the power cylinder should be cast iron, the hot cap should be stainless steel.
Ian S C
by Ian S C
Sun Apr 22, 2018 4:28 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Philips MP 1002 CA
Replies: 11
Views: 1195

Re: Philips MP 1002 CA

Rik, the round one at the bottom should be 20 Mfd wired across the coils, and the big square one is actually two 20 Mfd in parallel in series with the load. Run capacitors for an electric motor would be the ones for replacement. The old ones are probably due for replacement. Look for a rating of 300...
by Ian S C
Fri Apr 20, 2018 5:02 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling power generator
Replies: 14
Views: 1393

Re: Stirling power generator

If you plan to burn 12L / hr I would expect a lot more than 3W(maybe 10s of Kw's ), the Philips motor ran for 8 hrs on a 3.3L tank, or about .4L per hr. Power regulation can be done by varying the pressure in the motor, but the best way is to have a constant load, the motor and load designed to matc...
by Ian S C
Thu Apr 19, 2018 2:22 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling power generator
Replies: 14
Views: 1393

Re: Stirling power generator

Even a fairly small burner you could put a pot on to make coffee. With the Philips genny it's a case of keeping it at 3000rpm, today the best way I see is to produce a DC current, then use an inverter if you require 50hz AC, and it is quite possible to synchronize the output to the grid. You'v seen ...
by Ian S C
Thu Apr 12, 2018 2:09 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Noob question - would these parts work?
Replies: 23
Views: 2593

Re: Noob question - would these parts work?

The Heylandt Crown in an ALPHA motor does have some similarity to a displacer in that it does to a degree work as a regenerator. A honed stainless cylinder with a well made cast iron piston will have similar friction to an ordinary steel cylinder, and not too far off a cast iron cylinder. Metals oth...
by Ian S C
Tue Apr 10, 2018 4:14 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Noob question - would these parts work?
Replies: 23
Views: 2593

Re: Noob question - would these parts work?

NO, call me lazy, well not really, I just like developing the motors I build, I seem to have slowed up a bit over the couple of years. I make very few drawings when I build a motor, only if I can't visualize a part I then put it on paper.
Ian S C
by Ian S C
Mon Apr 09, 2018 5:09 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Noob question - would these parts work?
Replies: 23
Views: 2593

Re: Noob question - would these parts work?

Blaf, That motor gets its power from being an ALPHA motor, it has no fancy regenerator. With a generator in place it will easily run a radio, or charge a battery. Here it is now with it's air cooling, and I'v removed the side arm on the yoke and fitted a roller that slides up and down in a slot, I a...
by Ian S C
Mon Apr 09, 2018 4:40 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Design and Manufacture of Beta Stirling
Replies: 8
Views: 899

Re: Design and Manufacture of Beta Stirling

Lukas, that's a big motor with 60 mm dia hot cap, my biggest is about 55 mm, but I usually go to 30 mm to 40 mm(its cheaper). If you are going to make a ring/donut style burner, the gap is probably between15 mm and 20 mm, mine are built from what ever material I can find, most of my burners have thr...
by Ian S C
Fri Apr 06, 2018 4:09 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Asymmetric Ross Linkage
Replies: 3
Views: 659

Re: Asymmetric Ross Linkage

The Ross Yoke in a GAMA motor does not have to be asymmetric, you can make the displacer larger than the power cylinder as is done with a V type GAMA with a single crank on the crank shaft. I took some new photos yesterday, but my computer doesn't want to know my camera, so it won't down load them. ...
by Ian S C
Thu Apr 05, 2018 4:26 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Big size stirling
Replies: 8
Views: 1107

Re: Big size stirling

If you go down the index page a little bit you will see "High Power Stirling Going Into Production".
Ian S C