Search found 134 matches

by Wellington
Sat Jan 20, 2018 7:51 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: How to create a stirling cold cycle?
Replies: 1
Views: 20

How to create a stirling cold cycle?

Can anyone explain the basics or provide a link on how to make a stirling refrigerator.
Thanks
by Wellington
Fri Jan 19, 2018 12:48 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Heavy or lightweight displaser for more horsepower?
Replies: 5
Views: 65

Re: Heavy or lightweight displaser for more horsepower?

Wellington, yes use light weight steel, or stainless steel. Weight just causes extra friction.................... [img] DSC01133%20(800x600).jpg [/img] Yep. I imagine the friction would go up. On another note: I remember once seeing a german website which sold lots of different stirling engines but...
by Wellington
Fri Jan 19, 2018 12:46 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Heavy or lightweight displaser for more horsepower?
Replies: 5
Views: 65

Re: Heavy or lightweight displaser for more horsepower?

Trevor wrote:Hi Wellington
A displacer that is extra light weight............
Trev


Thank Trevor. will steer clear of aluminium displacer.
regards
Wellington
by Wellington
Thu Jan 18, 2018 6:14 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Heavy or lightweight displaser for more horsepower?
Replies: 5
Views: 65

Heavy or lightweight displaser for more horsepower?

Hello all. i want to build a stirling that produces good horsepower. Should i use a light weight displacer or a heavy displacer?
Thanks All. Regards
Wellington.
by Wellington
Wed Jan 17, 2018 7:54 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: water jacket for hot end
Replies: 4
Views: 75

Re: water jacket for hot end

It would have no comparison with an engine heated by a meths burner, the water jacket would have a maximum temperature of 100*C .......... That's good to know. I was starting to think i would need lots of pricey tubing. I've been looking at the twin syringe engines. They appeal to me because they h...
by Wellington
Tue Jan 16, 2018 9:50 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: water jacket for hot end
Replies: 4
Views: 75

Re: water jacket for hot end

Hello Has anyone any advice to offer regarding the idea of putting a water jacket around a stirlings hot end to heat the hot end with heated water from meth flame?. Ive seen stirlings running in cups of warm water before and am curious to know how performance will compare to heating the hot end dir...
by Wellington
Tue Jan 16, 2018 9:47 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: water jacket for hot end
Replies: 4
Views: 75

water jacket for hot end

Hello Has anyone any advice to offer regarding the idea of putting a water jacket around a stirlings hot end to heat the hot end with heated water?. Ive seen stirlings running in cups of warm water before and am curious to know how performance will compare to heating the hot end directly with a meth...
by Wellington
Tue Jan 16, 2018 6:54 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling engines with an internal spring question
Replies: 16
Views: 324

Re: Stirling engines with an internal spring question

Wellington wrote:
Ian S C wrote:For displacers, I try to get somewhere about .010" to .015" thick,


will it still work almost as good if the 304 stainless tube is 1 or 2mm thick?

regards
Wellington
by Wellington
Tue Jan 16, 2018 6:53 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling engines with an internal spring question
Replies: 16
Views: 324

Re: Stirling engines with an internal spring question

Ian S C wrote:For displacers, I try to get somewhere about .010" to .015" thick,


will it still work almost as good if the stainless tube is 1 or 2mm thick?

regards
Wellington
by Wellington
Fri Jan 12, 2018 2:46 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Tesla's "Ambient Heat Engine" Experiment
Replies: 22
Views: 5737

Re: Tesla's "Ambient Heat Engine" Experiment

Tom Booth wrote:According to an article by......



hello tom. can you provide a link to the material you reference. thanks.
by Wellington
Tue Jan 09, 2018 11:30 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling engines with an internal spring question
Replies: 16
Views: 324

Re: Stirling engines with an internal spring question

Important, if you use magnets, either for a spring, or a linear alternator, or both as I have, the surrounding structure of the motor must be non magnetic. Looks like you are a seasoned veteran stirling engine builder. I'll remember the non magnetic tip. Thanks. I'm ready to start building now. wil...
by Wellington
Mon Jan 08, 2018 11:16 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling engines with an internal spring question
Replies: 16
Views: 324

Re: Stirling engines with an internal spring question

Instead of steel springs for the free piston motor I use two magnets with the like poles facing each other(so they repel). Ian S C hmmm, never realised you can use magnets in a free piston motor. That would be a lot simpler than finding springs with apropriate springyness. I guess the magnets would...
by Wellington
Sun Jan 07, 2018 2:24 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling engines with an internal spring question
Replies: 16
Views: 324

Re: Stirling engines with an internal spring question

Ian S C wrote:Stainless steel is what I normally use, although I have used mild steel.....


How do mild steel and stainless compare in performance? what are your experiences with the two? Also how does thick and thin effect performance?
Wellington
by Wellington
Sun Jan 07, 2018 2:20 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Silver soldering stainless steel hot end
Replies: 12
Views: 212

Re: Silver soldering stainless steel hot end

Ian S C wrote:I cut off the + end with a thin wheel on the Dremmel tool......


Thanks Ian. Your always very helpful. Takes a bit of time to get all the innards out i guess. Any idea if the casings are regular mild steel or some other special alloy?

Wellington
by Wellington
Sat Jan 06, 2018 12:40 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Silver soldering stainless steel hot end
Replies: 12
Views: 212

Re: Silver soldering stainless steel hot end

Wellington, in my opinion it should. I also assume that you intend a silver brazing wire like Harris Safety Silv 45 or something similar. In operation, you should not allow the engine to stall indefinitely under high heat. have you ever known a stirling engine to explode? Thinking about it i guess ...

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