Search found 187 matches

by Trevor
Fri Sep 21, 2018 11:24 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Problem Rider Ericsson model
Replies: 14
Views: 508

Re: Problem Rider Ericsson model

OK Rick - Everything you have done seems OK, however the snifter valve maybe the culprit. I see you had it fully open - This will cause too much air to enter and/or exit from the displacer chamber. Not sure how the valve is to be set, but normally it is loose and only lets air in when below atmosphe...
by Trevor
Mon Sep 17, 2018 5:22 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Design and Manufacture of Beta Stirling
Replies: 4
Views: 645

Re: Design and Manufacture of Beta Stirling

Hi Lucas
Personally I would like to see more cooling area - approx 25% towards the heater end.
The rest looks OK - Should be a powerful engine when finished.
Regards Trev
by Trevor
Mon Sep 17, 2018 5:18 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Problem Rider Ericsson model
Replies: 14
Views: 508

Re: Problem Rider Ericsson model

Hi Rick Do you have good lubrication on the piston as it can slow down considerably if running too dry, also, as Ian suggested - Do you have a good load on the engine as this will stabilize the engine to a constant speed. Also you will need a constant heat source that is not based on the side etc bu...
by Trevor
Sun Sep 16, 2018 2:38 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Problem Rider Ericsson model
Replies: 14
Views: 508

Re: Problem Rider Ericsson model

Nice looking model Rik. Ian is right with the heat required. When using a low flame, it will start to run reasonbaly well and then stop. Definitely requires more heat. I do see a gas torch lying on the left of the photo. Have you tried this on it flat out and do you have any water cooling for the di...
by Trevor
Mon Aug 27, 2018 10:55 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 15
Views: 667

Re: Dual stirling generators electrically heated

Good one Melvin - Keep the fingers crossed
Trev
by Trevor
Mon Aug 27, 2018 4:22 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 15
Views: 667

Re: Dual stirling generators electrically heated

From a heat source with Sterling engines recovery is at most 35% - Very good efficiency compared to other motors.
What you are saying is fine, but all that heat is wasted - check out the other threads in this forum and you will understand.
Maybe some one from this forum can answer better than me.
Trev
by Trevor
Sat Aug 25, 2018 11:01 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 15
Views: 667

Re: Dual stirling generators electrically heated

Impressive Engines - I am not sure of the electrical robust radiator running both engines to produce 20kW. It would mean you are getting more energy out than what is going in. If you accomplish this you will go into the history books. Give it a go and I wish you the best - There will be a lot of sur...
by Trevor
Thu Aug 23, 2018 2:40 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 15
Views: 667

Re: Dual stirling generators electrically heated

Hi Melvin
Not sure what you want to do will work. If both engines are the same size and one is a heater for both, you will be trying to do the "Holy Grail", that is a perpetual motion machine. Physics show this cannot be done if you want the same power output to boyh.
Trev
by Trevor
Sun Jun 10, 2018 1:12 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: the volume ratio between displacer cylinder and power cylinder
Replies: 4
Views: 573

Re: the volume ratio between displacer cylinder and power cylinder

Hello OscarmikeIan
Ian is correct with the ratios 1.5:1 for Stirling Engines. It is the optimal ratio that has been tested for a very long time.
When using LTD Engines then this will be different.
You cannot have a larger piston capacity that the displacer as the engine will not work at all
Trev
by Trevor
Sat Mar 17, 2018 12:50 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Bekaert regenerator material
Replies: 9
Views: 1173

Re: Bekaert regenerator material

Looks very interesting. I would think this would be good for LTD engines if the product is lightweight.
Nice find Blaf - Trev
by Trevor
Mon Feb 26, 2018 2:35 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Propane burner design
Replies: 7
Views: 1224

Re: Propane burner design

Hi Ian - In the winter time you could possibly wrap a few coils of tubing around the hot end to make the cold frozen gas into a liquid for full firing.
Trev
by Trevor
Thu Feb 15, 2018 8:58 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: New flame eater with homemade gear
Replies: 8
Views: 1408

Re: New flame eater with homemade gear

Hi Thanh
Oh! What a nice engine mate. I like the work you did on the fuel tank and the gearing for the generator.
Well done, I love it
Trev
by Trevor
Sat Feb 03, 2018 5:41 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: What fastener to use on Hot Cylinder?
Replies: 2
Views: 910

Re: What fastener to use on Hot Cylinder?

I would use high temp silicon (red). It comes in a handy tube and you can purchase from any bearing, engineering or even Bunnings stores.
Glass does not transmit heat readily so the adhesive will wok here quite well.
Trevor
by Trevor
Thu Jan 18, 2018 4:46 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Book about striking engine design
Replies: 18
Views: 6549

Re: Book about striking engine design

Thanks Greg - I just downloaded this digital version.
Ripper mate as I have been trying to get a copy of this for some time.
Trev
by Trevor
Thu Jan 18, 2018 3:06 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Horse power figures of some historic engines
Replies: 3
Views: 1338

Re: Horse power figures of some historic engines

Good info Alfista. They were sure were heavy when they only used cast iron.
Todat with alloys and special metals weight to HP will be quite different.
Trev