Search found 2219 matches

by Ian S C
Tue Aug 28, 2018 4:21 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Wood burner Sirling fan engine
Replies: 1
Views: 3079

Re: Wood burner Sirling fan engine

My GAMMA one uses the 1.5 : 1 ratio, and the Ringbom one is about 2 : 1, but it sorts out it's own ratio depending on the load.
Ian S C
Image
by Ian S C
Tue Aug 28, 2018 4:11 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: We are back
Replies: 4
Views: 5786

Re: We are back

I missed that, my computer, and landline phone went down about 2 wks ago. Ah well, fingers crossed.
Ian S C
by Ian S C
Tue Aug 28, 2018 4:07 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: ITS GENIOUS™ - 10 kW portable CHP stirling
Replies: 21
Views: 51558

Re: ITS GENIOUS™ - 10 kW portable CHP stirling

By the look of their Facebook site they seem to still be in business, but there is nothing much about sales of their machines.
Ian S C
by Ian S C
Tue Aug 28, 2018 3:47 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11870

Re: Dual stirling generators electrically heated

Electric al generation by a Stirling Engine of (say) 1Kw might at most develop .75 Kw to .8 Kw, a heating element might have a similar efficiency, producing say .5 Kw of heat, and the engine might take up 50% of that, it ain't gonner work mate. But an electric powered Stirling Engine is a good demon...
by Ian S C
Sun Aug 12, 2018 1:35 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: ITS GENIOUS™ - 10 kW portable CHP stirling
Replies: 21
Views: 51558

Re: ITS GENIOUS™ - 10 kW portable CHP stirling

We have not heard from Inestol since May 21st 2015, I wonder how many they have sold since then? Ian S C
by Ian S C
Wed Aug 08, 2018 5:30 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Gamma type cylinder and displacer
Replies: 24
Views: 14315

Re: Gamma type cylinder and displacer

When I design my motors, I like to make the power piston stroke the same or shorter than the diameter of the piston, and calculate the swept volume, then I select the tube to make the displacer, and if I can make it a little larger in diameter, and with luck it is near enough that if the same stroke...
by Ian S C
Wed Aug 08, 2018 5:10 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Small Stirling Engine
Replies: 10
Views: 10385

Re: Small Stirling Engine

The little Bohm HB7-A02 often needs the power cylinder, and piston cleaned, I use a bit of paper kitchen towel, it has a stainless piston in an aluminium bore, not a mix that I would use. My own small motor has a 3/8" bore by 1/2" stroke, both the piston and cylinder are cast iron. The fly...
by Ian S C
Mon Aug 06, 2018 4:06 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Small Stirling Engine
Replies: 10
Views: 10385

Re: Small Stirling Engine

To put a photo up click on the box to the left of the Submit box, click on insert image, then attachments. You may need to reduce the photo size, I use 640 x 480, and just bring it straight from your computer. The only motor I'v bought is this one, I build my own. Ian S C [img] DSC01049%20(640x480)....
by Ian S C
Sat Aug 04, 2018 2:37 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Gamma type cylinder and displacer
Replies: 24
Views: 14315

Re: Gamma type cylinder and displacer

Yes Bumkin is correct. About the bronze, I can't help much there, some bronzes are harder than others, and I would go for the harder of the two. You should aim for as polished as possible for the bore of the power cylinder. It's usually best to have the displacer cylinder the same or larger than the...
by Ian S C
Mon Jul 16, 2018 4:56 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Alpha Stirling Design - What dou you thing?
Replies: 5
Views: 4826

Re: Alpha Stirling Design - What dou you thing?

I didn't know and could find no information about Heylandt Crowns, so I made mine to similar dimentions to the displacer in a GAMMA, or BETA motor, so it's length is 3 x the diameter. The two cylinders are joined by a hole drilled through from the r/h side of the cylinder head (the bit that goes rig...
by Ian S C
Wed Jul 11, 2018 5:19 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Alpha Stirling Design - What dou you thing?
Replies: 5
Views: 4826

Re: Alpha Stirling Design - What dou you thing?

There is no difficulty making the Ross Yoke. I have changed that motor from having a link from the bottom centre to the (in this case) right hand side, to having a pin on the bottom centre of the triangle running in a vertical slot. It also has been changed from water to air cooling. There is no fan...
by Ian S C
Tue Jul 10, 2018 5:40 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Alpha Stirling Design - What dou you thing?
Replies: 5
Views: 4826

Re: Alpha Stirling Design - What dou you thing?

An interesting looking motor, how are you going to heat it?
Here is my one, it has a Ross Yoke. 35 mm bore, and 22 mm stroke, air cooled, and gas / LPG heated. That's a 6" / 150 mm rule standing on the right hand side, it caught the sunlight a bit.
Ian S C

[img]
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DSC01351.JPG (139.44 KiB) Viewed 4768 times
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by Ian S C
Mon Jul 09, 2018 4:48 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Tesla's "Ambient Heat Engine" Experiment
Replies: 175
Views: 175893

Re: Tesla's "Ambient Heat Engine" Experiment

If you are going to get serious about building hot air motors (or any motor, or model) you need at least the use of a lathe, unless you are only going to build tin can motors. The most important thing is imagination.

Ian S C
by Ian S C
Sun Jul 08, 2018 3:36 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Tesla's "Ambient Heat Engine" Experiment
Replies: 175
Views: 175893

Re: Tesla's "Ambient Heat Engine" Experiment

Tom, that one cost me the price of the 12 nylon screws used to hold the top and bottom plates together. The plates were made from 2 frying pans found in a rubbish skip, the top one is 5 mm thick, and the bottom one 3 mm. The flywheel was made from the pan used for the top plate, the spokes are bits ...
by Ian S C
Fri Jul 06, 2018 5:04 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Tesla's "Ambient Heat Engine" Experiment
Replies: 175
Views: 175893

Re: Tesla's "Ambient Heat Engine" Experiment

The one way to see if it actually works is to build it, and try it out.
Ian S C