Just a quick question. Has anyone ever tried using strong duct tape as a diafram on a free piston engine instead of a balloon and if so did it work?
Thanks
Wellington
Search found 143 matches
- Thu Jan 04, 2018 9:53 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Duct tape as diafram
- Replies: 0
- Views: 27695
- Thu Jan 04, 2018 9:31 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Stirling engines with an internal spring question
- Replies: 16
- Views: 10296
Re: Stirling engines with an internal spring question
Wellington, it seems that you are describing the Ringbom..... Im basically looking to build an engine that is as simple to build as possible yet be made of materials that are durabled and presentable enough for sale as a quality made product. I've been looking at linear free piston engines but have...
- Thu Jan 04, 2018 7:44 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Stirling engines with an internal spring question
- Replies: 16
- Views: 10296
Stirling engines with an internal spring question
Hello again everyone. long time since my last post. Is it possible to build a hot air engine that pushes a displacer forward with hot air expansion and then the rebounding displacer is done using a spring as well as the natural suction of the cooling hot end? (Thereby eliminating the need for a powe...
- Sat Sep 24, 2016 11:06 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: basic dimentions needed for gama design
- Replies: 20
- Views: 13186
Re: basic dimentions needed for gama design
Glass syringes should be ok for a power cylinder. When you mould the JB Weld piston, the inside of the tube that you mould it in is lightly smeared with grease, to stop it sticking, as an extra, sprinkle some graphite powder on the grease, so that the outside of the piston has some graphite for ext...
- Thu Sep 22, 2016 7:29 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: basic dimentions needed for gama design
- Replies: 20
- Views: 13186
Re: basic dimentions needed for gama design
Thanks for taking the time to provide all this info guys. I'm sure it will prove useful. Q: How long can I expect glass to last inside a stainless steel piston cylinder? I have a small model stirling engine that uses a small AA size battery inserted into a brass tube and inside the brass tube forwar...
- Tue Sep 20, 2016 11:28 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: basic dimentions needed for gama design
- Replies: 20
- Views: 13186
Re: basic dimentions needed for gama design
Thanks for the info Ian and Alfista. I'm looking to build an engine that does not require machining and a lot of maintainance. Do you think an epoxy piston in a steel cylinder would work without any glass?
Wellington
Wellington
- Wed Sep 14, 2016 1:02 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: basic dimentions needed for gama design
- Replies: 20
- Views: 13186
Re: basic dimentions needed for gama design
Thanks Ian. Can you recommend any good links to learn about the basics of the alpha design?Ian S C wrote:The ALPHA motor is a totally different machine.....Ian S C
Wellington.
- Tue Sep 13, 2016 5:09 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: basic dimentions needed for gama design
- Replies: 20
- Views: 13186
Re: basic dimentions needed for gama design
The gap at each end...... Thanks Ian. These two links should keep me busy a while. You once recommended putting the crank and alternator all in one housing for a pressure design. The v twin alpha design looks most suitable for making a pressurised engine. Do the following dimensions given on the Ro...
- Tue Sep 13, 2016 3:52 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: basic dimentions needed for gama design
- Replies: 20
- Views: 13186
Re: basic dimentions needed for gama design
Thanks Ian. These two links should keep me busy a while.Ian S C wrote:The gap at each end......
Wellington.
- Tue Sep 13, 2016 3:50 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: basic dimentions needed for gama design
- Replies: 20
- Views: 13186
Re: dimensions of gamma engine
Alfista wrote:
I refer you to Robert Sier's Notes on Hot Air Engines...
Just what I wanted. Thank you Alfista. Have you tried the delft clay kit I recommended yet?
Wellington
- Mon Sep 12, 2016 5:27 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: basic dimentions needed for gama design
- Replies: 20
- Views: 13186
Re: basic dimentions needed for gama design
for a GAMMA motor, as with a BETA......Ian S C ok thanks Ian. any other dimensions that I need to know about? like how near the tip of the cold end should the displacer stop? Also how do you match up the crank turning circle diameter (say 4cm) with the total distance of displacer movement? Wellingt...
- Sun Sep 11, 2016 11:18 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: basic dimentions needed for gama design
- Replies: 20
- Views: 13186
basic dimentions needed for gama design
Ok, got lots of tubing of various sizes and am ready to begin my first engine. Can anyone give a brief explanation or link to the basic dimensions and volumes of a gamma engine. my main concern is how do you calculate how much volume of air to pump into the cold side with the power piston?
Wellington
Wellington
- Fri Sep 09, 2016 5:27 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Duel Steam/Stirling Engine
- Replies: 2
- Views: 4768
Re: Duel Steam/Stirling Engine
thankyoutibsim wrote:URL removed because of it's "anti-Semitic" views. Do not re-post.
- Wed Sep 07, 2016 9:20 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Duel Steam/Stirling Engine
- Replies: 2
- Views: 4768
Duel Steam/Stirling Engine
Anyone know of any examples of an engine that is both a hot air engine and a steam engine?
Thanks
Wellington
Thanks
Wellington
- Sat Sep 03, 2016 10:21 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Stirling engine project
- Replies: 8
- Views: 7068
Re: Stirling engine project
I prefer to use unobtainium for its lightweight and stronger than steel qualities for a displacer
Wellington.
Wellington.