Search found 11 matches

by Soeren
Mon Jan 28, 2013 2:19 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: DIY rubber bellow as power piston
Replies: 17
Views: 20105

DIY rubber bellow as power piston

Hello, As stirlig engine builders without lathe or any other power tools we always search for solutions to replace the power piston. Gloves, balloons or bellows help us to get the engines running. I have devised an easy way, how to make your own rubber bellow of any desired shape. This is easily pos...
by Soeren
Wed May 25, 2011 2:36 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: a possible diamond in the rough: a powerful engine(almost)
Replies: 9
Views: 9527

Re: a possible diamond in the rough: a powerful engine(almos

... However, I must note that it is strange that all build engines, but few actually tell how much energy they produce, all are content that they are running, and this is a bit 'wonderful little to define them, (as engine) mechanical jewelry. Unless there are levers plated in gold, and diamonds int...
by Soeren
Wed May 25, 2011 2:22 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: My 2nd LTD engine
Replies: 6
Views: 7192

Re: My 2nd LTD engine

Hello, finally I managed to do a small performance test with my engine. I always wondered how much power my engine would produce. So I added a wooden cylinder 6mm diameter to the crank shaft that winds up a thin yarn with a small weight at the end. Then I started the engine and measured the time unt...
by Soeren
Sun Sep 12, 2010 4:34 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Newbie on Stirling Engines [Need HELP plz...]
Replies: 26
Views: 19629

Re: Newbie on Stirling Engines [Need HELP plz...]

... Displacer Piston is fit perfectly to the displacer cylinder. ... ok, so let's ask, what is the gap between the displacer and the displacer cylinder. If it "fits perfectly" then I guess, that there is no gap at all. And then we have the reason why your machine will not work. Indeed it ...
by Soeren
Fri Aug 27, 2010 1:45 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Help with aluminum piston
Replies: 11
Views: 18264

Re:

... The best piston material is graphite. Harder to get. ... What do you think about the idea to use carbon brushes from electric motors as graphite source (maybe from old hand drills or a from a vacuum cleaner)? For example I consider to use it for the bearings in my next LTD stirling project, but...
by Soeren
Sun Jul 25, 2010 3:27 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: My 2nd LTD engine
Replies: 6
Views: 7192

Re: My 2nd LTD engine

@Junkie: the displacer is made of polystyrene foam. As promised I have uploaded a detailed description with pictures how to build this engine: http://home.arcor.de/soeren_scharf/Stirling/tutorial.zip I think, that the lids of the gherkin glasses are not a good choise, because they are coated with pl...
by Soeren
Thu Jul 22, 2010 12:49 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: My 2nd LTD engine
Replies: 6
Views: 7192

My 2nd LTD engine

After one year with a lot of breaks and delays finally I got my 2nd DIY project finished. Again it is a LTD gamma engine that runs on a cup of hot water. And again it is made of parts, that you can find in every household. But now it looks much better than the first one (the first one was quite ugly...
by Soeren
Wed Jul 15, 2009 4:48 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: My first stirling engine (LTD gamma DIY project)
Replies: 3
Views: 9310

Re: My first stirling engine (LTD gamma DIY project)

... I notice you have a wooden bearing/crank support structure on this engine. How did you affix the cool side plate and this wood?... I just glued it, with the low forces by this machine some glue is sufficient. In the first step I tried to use some screws but using screws would bend the lid becau...
by Soeren
Mon Jul 13, 2009 12:25 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: My first stirling engine (LTD gamma DIY project)
Replies: 3
Views: 9310

Re: My first stirling engine (LTD gamma DIY project)

hello, Now I have finished my first stirling engine. This version got a new and more precise displacer and a new wall for the displacer chamber made of a 1Ltr Sprite bottle. The gap between the displacer and the wall is 1mm. The required temperature difference is much lower than in the first video. ...
by Soeren
Fri May 15, 2009 12:49 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Large LTD Engine
Replies: 4
Views: 8610

Re: Large LTD Engine

... If any of you are capable of translating the info I would be very appreciative. ... There is not really any useful information, only general information for people who do not know the stirling engine at all. In example the last sentence is, that stirling engines can convert sun light into mecha...
by Soeren
Fri May 08, 2009 4:29 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: My first stirling engine (LTD gamma DIY project)
Replies: 3
Views: 9310

My first stirling engine (LTD gamma DIY project)

hello, I just wanted to show you my first stirling engine. It is a (nearly) LTD gamma engine and I made it as a completely DIY project (without all the expensive tools i.e. a lathe). All I used was a drill, a saw, a razor blade, a Scissor and a lot of glue. This is the list of materials: * 3 lids of...