Search found 4 matches

by Erik Wannee
Fri Jan 15, 2010 11:19 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stoddard engine
Replies: 3
Views: 8656

Re: Stoddard engine

There have been ideas posted here in the past about Stirling's using reed type valves but I have yet to see anything that functions. It would seem that a flexible rubber reed valve would do little in the way of air flow restriction and should improve efficiency in the right design, there must be so...
by Erik Wannee
Mon Jun 15, 2009 1:09 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stoddard engine
Replies: 3
Views: 8656

Stoddard engine

Since a few years, I have been 'inventing' new types of hot air machines. Recently I came to a design that seemed to have interesting properties, and I thought I had made a complete new invention. ...Until I found a 90 year old (1919) patent of Elliott J. Stoddard, who had patented almost exactly th...
by Erik Wannee
Mon Jun 08, 2009 1:11 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Large LTD Engine
Replies: 4
Views: 8611

Re: Large LTD Engine

I have a question about scaling up Stirling engines. I think there's no reason why a Stirling engine cannot be scaled up, but I'm not completely sure. Imagine a very large gamma machine, f.i. 10 metres in diameter. Would it work completely the same as a coffee cup machine? In the youTube video, a fl...
by Erik Wannee
Mon Jun 08, 2009 1:00 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Large LTD Engine
Replies: 4
Views: 8611

Re: Large LTD Engine

Litteral translation: On his model, the inventor shows us the heart of his 'sun machine': The Stirling Engine. You can also say 'hot air motor'. Eckhart Weber has of course no sun in his working place, but a torch or a small flame work as well. Stirling engines can also immediately transform solar e...