Search found 2182 matches

by Ian S C
Thu Mar 21, 2019 1:57 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling engine won't run
Replies: 4
Views: 151

Re: Stirling engine won't run

I suspect that it may be to do with the diaphragm, I'v not had much to do with these, I recommend that you go to the top of the index page of this forum, and read through the thread on making a simple Stirling Engine, this has a bit in there that tells you how to make an epoxy piston that could repl...
by Ian S C
Wed Mar 20, 2019 3:18 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: My stirling engine school project
Replies: 16
Views: 946

Re: My stirling engine school project

The cylinders must be round, parallel, and well honed, then the pistons made to fit the clearance will be between .01 mm and .03 mm, the best way of testing this fit is to insert the piston in the cylinder dry, and it should just slide through under it's own weight and if you place the palm of your ...
by Ian S C
Thu Mar 14, 2019 12:53 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: How can I calculate engine dimentions for example, cylinder volume, diameter and the overall size of the engine>
Replies: 6
Views: 233

Re: How can I calculate engine dimentions for example, cylinder volume, diameter and the overall size of the engine>

go to the top of the index page and you'll find Web links and magazine articles, and work your way through that, there are probably more on Google.
Ian S C
by Ian S C
Wed Mar 13, 2019 3:30 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: How can I calculate engine dimentions for example, cylinder volume, diameter and the overall size of the engine>
Replies: 6
Views: 233

Re: How can I calculate engine dimentions for example, cylinder volume, diameter and the overall size of the engine>

There have been Stirling engines use for car engines ranging from 100 hp to 175 hp, there are Stirling engines used in Swedish submarines of abut 100 hp. I can't find the reference point for it, but there are stationary power supplies built in shipping containers in Europe somewhere, advantage, sile...
by Ian S C
Tue Mar 12, 2019 3:12 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: My First Rhombic Drive Engine
Replies: 7
Views: 222

Re: My First Rhombic Drive Engine

The nylon gears that I used in my motor came from a cake mixer. make sure that the gears do not mesh too tightly.
Ian S C
by Ian S C
Sun Mar 10, 2019 2:55 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: My First Rhombic Drive Engine
Replies: 7
Views: 222

Re: My First Rhombic Drive Engine

Friction is probably the most important thing to get rid of. Some people even take the shields off the ball races, and wash out the grease, replacing it with a very small amount of very light grade oil. It might be worth using a lubricant on the gears that is Teflon/PTFE based, use absolute minimum....
by Ian S C
Sun Mar 10, 2019 2:45 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Hayward Tyler snifting valve
Replies: 1
Views: 72

Re: Hayward Tyler snifting valve

Ian, Under the message box there is a box Full Editor & Preview, click that and then just follow the words. Don't know the Hayward Tyler motor, I'll be interested in seeing it.

Ian S C
by Ian S C
Sat Mar 09, 2019 2:39 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: My First Rhombic Drive Engine
Replies: 7
Views: 222

Re: My First Rhombic Drive Engine

Vjdeep, If you can get old car shock absorbers(the telescopic ones) and pull them to bits (it can be messy), the tube inside is highly polished, and makes a good cylinder liner, they range from about 25 mm to over 40 mm. You also get a bar of best quality steel with chrome plated out side. I have no...
by Ian S C
Fri Mar 08, 2019 3:01 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: My First Rhombic Drive Engine
Replies: 7
Views: 222

Re: My First Rhombic Drive Engine

Hi Vjdeep, looks good, you have put in a lot of work on your motor. What is the power piston, and cylinder liner made of? The motor seems to have quite a bit of friction when it is turned in the video. The bearing surfaces in the linkage are aluminium on steel pins, this tends toward high friction, ...
by Ian S C
Tue Mar 05, 2019 2:53 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: "Hi...We are new here!" First posts here (or anywhere is OK)
Replies: 436
Views: 133943

Re: "Hi...We are new here!" First posts here (or anywhere is OK)

50hp is a bit optimistic, you will need a good machine shop, and deep pockets, A good start is to aim for a few hundred Watts. A least with a presurised motor, and modern materials the size comes down, in the old days it was thought that 1 ton per horse power was good going. I assume that you built ...
by Ian S C
Sun Mar 03, 2019 1:49 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling engine won't run
Replies: 4
Views: 151

Re: Stirling engine won't run

First thing I see is the main bearings, or lack of. The crankshaft appears to be just using the ?wood as the bearing, and one of the most important things with Stirling Engines is reducing friction to the absolute minimum. One way to do it would be to get some tin (from a tin can, get a bit of steel...
by Ian S C
Thu Feb 28, 2019 1:52 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Is it possible to build 1MWt Stirling engine?
Replies: 2
Views: 145

Re: Is it possible to build 1MWt Stirling engine?

Nothing is impossible, but I think cost of building and running, and the size might just rule the Stirling Engine out. But as a power supply in space ie the moon or mars the Stirling Engine with a Nuclear heat pack would be the way to go.

Ian S C
by Ian S C
Fri Feb 22, 2019 1:49 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Whispergen mk4
Replies: 22
Views: 3237

Re: Whispergen mk4

Another site, and someone that probably knows more about the Whispergen than anyone. www.peterlynnhimself.com/About_Stirling_Engines.php Peter lives about 80k south of me at Ashburton in Canterbury new Zealand. Have a look at his site on Google, and maybe get in touch with him. Just type in Peter Ly...
by Ian S C
Thu Feb 21, 2019 1:50 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: What type of Stirling Engine
Replies: 7
Views: 542

Re: What type of Stirling Engine

The use of solar heat depends a lot on geography, the nearer the equator the better, so it will work in the temperate regions. one important thing with any hot air motor is cooling.

Ian S C
by Ian S C
Tue Feb 12, 2019 3:21 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: "Hi...We are new here!" First posts here (or anywhere is OK)
Replies: 436
Views: 133943

Re: "Hi...We are new here!" First posts here (or anywhere is OK)

Hi Vandee, +30*C here today. I have only built two free piston motors, the first a BETA type didn't work too well, I found later that it was all my fault, too much steel around the magnets I had on the piston to generate power. The second one , a GAMMA motor goes quite well, plenty of aluminium, and...