Search found 107 matches

by Longboy
Sat Apr 05, 2014 11:25 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: house heating system with stirling engine
Replies: 14
Views: 7279

Re: house heating system with stirling engine

Good Job Laszlo on back yard innovation. You put the Stirling, a water pump and radiator assemblys to aid in the comfort of your home! :idea:
by Longboy
Sat Apr 05, 2014 11:09 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Acquired a Stirling Engine
Replies: 16
Views: 9104

Re: Acquired a Stirling Engine

You have a PM Research diecast Stirling on your hands. Still available new from Mini Steam and other vendors in single and dual flywheel versions. About $125 U.S. Not a real challenge to disassemble, clean and run, your neighbors 15 yr old should have it back to you in a day. The hot tube is a press...
by Longboy
Mon Dec 16, 2013 9:54 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Build Stirling but torque not good
Replies: 10
Views: 4428

Re: Build Stirling but torque not good

I'm looking at your video and the layout of your Gamma engine. You've taken the right step in the flywheel being heavy and solid to store the engines input torque when draging your fingers across the flywheel. The dead space is fine. With the cylinders mounted to a common block heat can migrate over...
by Longboy
Wed Nov 27, 2013 9:36 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Alpha type engines built from recycled materials
Replies: 9
Views: 5338

Re: Alpha type engines built from recycled materials

I like your hard drive and....tape heads? for flywheels. I've seen your Youtubes......good job! What is your piston material?
by Longboy
Thu Mar 14, 2013 8:26 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Longboy's STIRLING "Fantail" engine.
Replies: 0
Views: 9903

Longboy's STIRLING "Fantail" engine.

A Ross yoke drive with a horizontal diaphragm power piston. The power piston works without a guide supporting the connecting rod as it pushes the balloon in and out of the cylinder due to the Ross yoke imparting a very small angle to the con rod in reciprecation and the tension of the balloon self c...
by Longboy
Sat Sep 15, 2012 10:43 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: free displacer beta
Replies: 5
Views: 3239

Re: free displacer beta

Asked and answered by...."yourself"! However in relating a free piston design to a mechanically connected Beta might be your miss. Most would not consider it a troubleing feature, this pushrod through a gland method, if you end up with a tried and true running model. A somewhat hybrid free/mechanica...
by Longboy
Sat Jan 14, 2012 10:21 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: A new Stirling engine concept ?
Replies: 29
Views: 15423

Re: A new Stirling engine concept ?

Can't you read: "peer reviewed" Can't you understand what this mean? People with a brain can read this paper: http://www.monotherme.com/pdf/research_on_new_isochoric_process.pdf By now you should give the "new Stirling concept" a rest on this forum as your reviewed paper doesn't apply to our subjec...
by Longboy
Sun Jan 08, 2012 12:05 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: High compression
Replies: 19
Views: 9691

Re: High compression

A piston moving within another moving piston can be sealed just as they would be in a piston moving in a stationary cylinder. If high compression is proven in Diesel your materials need to have the capacity to hold the compression to these rates. Don't know of any examples that use piston within pis...
by Longboy
Mon Dec 12, 2011 9:41 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Advice for ratios
Replies: 4
Views: 4106

Re: Advice for ratios

Your solution is to shorten the displacer stroke with unmatched cyl. diameters. The diameter of the displacer cylinder is three times the copper pipe diameter. Equal air exchange of unheated air volume is controled by how deep you plung the displacer and power piston into its their bores so set the ...
by Longboy
Mon Dec 12, 2011 9:23 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Flame Temperature
Replies: 7
Views: 7390

Re: Flame Temperature

....Sez here you asked for typical temps. :mrgreen: Any concerns regarding more specific measurements?
by Longboy
Thu Dec 01, 2011 7:35 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Show your selfmade Stirling engine!
Replies: 9
Views: 5342

Re: Show your selfmade Stirling engine!

....Well I guess I can build engines but I'm still an internet nim null :mrgreen: Lets try this: http://www.youtube.com/user/Longboy4?feature=mhee#p/u

[youtube][/youtube]
by Longboy
Sat Nov 05, 2011 12:57 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Soldering
Replies: 18
Views: 8217

Re: Soldering

Hello all! If I want to join copper plumbing pipe to tin can for making of power piston, what is the neatest, and easiest method that you might be able to reccomend. Any soldering tips would be much appreciated. Regards, Peter As you see in the former responses, soldering and prep is a pain. Clear ...
by Longboy
Fri Sep 02, 2011 4:44 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: My don't delete me post
Replies: 27
Views: 12465

Re: My don't delete me post

....You should throw the caculator away and start building the engine. Those who get lost in the math just end up with a pile of parts and going back to the chauk board doesn't advance the construction process. You have the hot cyl. and displacer missing? Start cutting metal. Make the displacer abou...
by Longboy
Tue Aug 30, 2011 9:21 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Regenerator doubles power output.
Replies: 8
Views: 4533

Re: Regenerator doubles power output.

....do you have a video that relates to the thread title? This doesn't seem to be the right video after watching.