Search found 209 matches

by Trevor
Mon Dec 26, 2016 4:35 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Sterling Diaphragm Engine
Replies: 97
Views: 40528

Re: Sterling Diaphragm Engine

Yep! you were right Ian. The slower the better, I have now set my lathe to 150rpm and it works a wonder on the parting off of the alloy and especially brass. I also listened to Thanh as you may have noticed from his pics that the angle of attack was a lot more acute to what I was using. It also made...
by Trevor
Mon Dec 26, 2016 4:27 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: hot Air Beam Engine with cooling and generator
Replies: 28
Views: 9030

Re: hot Air Beam Engine with cooling and generator

Thanks Ian - I will eventually go back with the stainless wool as it seems to hold better. Steel wool is too fine and breaks up easily, even when I have tried A heavier grade, What I can tell you that in small models as I am building, that a regenerator makes a big difference (using wool that is). I...
by Trevor
Fri Dec 23, 2016 9:17 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: hot Air Beam Engine with cooling and generator
Replies: 28
Views: 9030

Re: hot Air Beam Engine with cooling and generator

Thanks Aviator - Another problem come up after running this engine for a couple of hours. The displacer started to full apart (made of steel wool) and jammed the intake to the piston. I think Ian told me this could happen using steel wool. Anyway, I made a stainless one (0.3mm wall thickness) that g...
by Trevor
Thu Dec 22, 2016 10:50 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: hot Air Beam Engine with cooling and generator
Replies: 28
Views: 9030

Re: hot Air Beam Engine with cooling and generator

Love the paint work Thanh - The model looks absolutely stunning. Hi Aviator - Re the temperature of the sterling engine. The earlier model I made with a fan attached (diaphragm type) used a radiator. First off, the heat source was a small pressurized all fuel type vaporizing burner that was adapted ...
by Trevor
Thu Dec 22, 2016 1:53 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: hot Air Beam Engine with cooling and generator
Replies: 28
Views: 9030

Re: hot Air Beam Engine with cooling and generator

This could be a good idea Thanh - Instead of using a forced fan feed for radiator I could just go and buy one of these for $40.00 landed at your door. I reckon the air would flow through and cool the water easy enough if the radiator is placed horizontal - It would fit under my stand at least :laugh...
by Trevor
Thu Dec 22, 2016 1:21 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Snifting valve
Replies: 30
Views: 12376

Re: Snifting valve

Hi Ian - It looks as if this can be controlled by the valve for best performance.
Trev
by Trevor
Thu Dec 22, 2016 1:18 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: hot Air Beam Engine with cooling and generator
Replies: 28
Views: 9030

Re: hot Air Beam Engine with cooling and generator

The layout is attached. - Trevor
by Trevor
Thu Dec 22, 2016 1:16 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: hot Air Beam Engine with cooling and generator
Replies: 28
Views: 9030

Re: hot Air Beam Engine with cooling and generator

Hi Thanh - Trick little system of using a rubber diaphragm that is driven by the expanding and contraction of air within the displacer chamber. The first lot of photos show you the layout of the diaphragm. This is 25mm in diameter and works very well. Normally I would place the pump elsewhere but th...
by Trevor
Wed Dec 21, 2016 8:16 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: hot Air Beam Engine with cooling and generator
Replies: 28
Views: 9030

Re: hot Air Beam Engine with cooling and generator

Well! nearly at the finish line now. The engine is now complete and working - Have added the lights with a small 3 phase alternator and as yet to make the radiator and/or cooling tower. To my surprise, this engine has quite a lot of power and I had to use a small flame from a spirit burner to slow i...
by Trevor
Wed Dec 21, 2016 8:05 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Snifting valve
Replies: 30
Views: 12376

Re: Snifting valve

Well! That is good news. Now that would work as all the air by then has done its job and the displacer will be then falling which would cause a small amount of air into the engine. Worth a try - Thanks Aviator. Trevor
by Trevor
Wed Dec 21, 2016 8:01 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Help!!
Replies: 9
Views: 6746

Re: Help!!

I reckon you might be right there Tibsim! I have nearly finished the other engine now complete with generator. Little flame with lots of power - see my thread. Trev - and thanks for your help
by Trevor
Wed Dec 21, 2016 4:23 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Snifting valve
Replies: 30
Views: 12376

Re: Snifting valve

Thanks Aviator - I see the light now so to speak. I wouldn't have thought that it would help small models like I am building. I would expect that it would be hard to fit onto small pistons and Ian has tried it. but not making much difference. I might give it a go and see if it does help with one tha...
by Trevor
Wed Dec 21, 2016 4:18 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: hot Air Beam Engine with cooling and generator
Replies: 28
Views: 9030

Re: hot Air Beam Engine with cooling and generator

Hi Thanh - Is that one still being built - Looking good
Trevor
by Trevor
Wed Dec 21, 2016 3:45 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: What is the difference between thermal lag and lamina flow engines
Replies: 36
Views: 16678

Re: What is the difference between thermal lag and lamina flow engines

Thanks Tibsim - Hope to get mine going again soon - They looks promising with their power output.
Trevor
by Trevor
Wed Dec 21, 2016 3:21 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: hot Air Beam Engine with cooling and generator
Replies: 28
Views: 9030

Re: hot Air Beam Engine with cooling and generator

That's a good speed on that Ian. Have no idea how fast mine was going though as it started to shake all over the place (got to balance it somehow) Thanks Ian - Still got to do the hot box yet. Just got back from the shed after putting in the 3/4"holes (X2) for the exhaust - opposite each other and a...