Search found 206 matches

by Trevor
Thu Jun 20, 2019 3:04 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Proposed Air Cooling Tower
Replies: 5
Views: 38

Re: Proposed Air Cooling Tower

I see your point Ian. One of the computer radiators are cheap and seem effective as I have used them before. Possible solution is to mount the radiator up at 300mm high with a box fixed around it with vent holes in the bottom. As the radiator gets hot an airflow should start automatically from below...
by Trevor
Thu Jun 20, 2019 1:09 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Proposed Air Cooling Tower
Replies: 5
Views: 38

Re: Proposed Air Cooling Tower

I was going to use a pump with the model using a tower to cool the water. The more I think of it though, it would have to be 400mm high for it to work as a natural ventilated system. The water at the top would be warm which would get the air flow coming in from the bottom. Feasible I think, However ...
by Trevor
Thu Jun 20, 2019 1:02 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Robinson Hot Air Engine
Replies: 10
Views: 207

Re: Robinson Hot Air Engine

Yep! Should have listened to you Ian - Painted it, and guess what! It would not go no matter how hard I tried :sad: , however I eventually got it finished and operating correctly. Certainly isn't any horse power here, but it does run realistically - didn't need to add water to the cooling as it run ...
by Trevor
Wed Jun 19, 2019 1:52 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Proposed Air Cooling Tower
Replies: 5
Views: 38

Proposed Air Cooling Tower

I am looking at making a cooling tower for one of my hot air model engine. The design will be as below, but I am wondering if anyone out there on the Forum has successfully made something like this that works.
Trev
by Trevor
Mon Jun 17, 2019 2:33 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Robinson Hot Air Engine
Replies: 10
Views: 207

Re: Robinson Hot Air Engine

That's quite a beautiful engine you have made Ian and I do like the radiator. I have just recently brought a computer radiator which suits a small fan and I will be looking forward to using it on a small power house like the one you have built. I must try and contact the two modelers you have mentio...
by Trevor
Mon Jun 17, 2019 4:12 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Ltd engine?
Replies: 4
Views: 66

Re: Ltd engine?

Also Mr Scott, look at Hutch687 on the forum - listed just a couple doen the line
Trev

2 KWh LTD Stirling Engine
by Hutch687 » Fri Jan 27, 2017 4:21 am
by Trevor
Mon Jun 17, 2019 4:03 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Ltd engine?
Replies: 4
Views: 66

Re: Ltd engine?

Yes you can. If you look under utube SunPulse they give you the plans basically for doing it. I would expect it to be costly, especially the heating of the oil and or water. Here is the links - https://www.youtube.com/watch?v=OmgJsjgWpHI - https://www.youtube.com/watch?v=mpBa0ntXANI&feature=share Tr...
by Trevor
Sun Jun 16, 2019 5:41 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Ltd engine?
Replies: 4
Views: 66

Re: Ltd engine?

Hi Mr Scott
The size of an LTD engine you are speaking of would be around 2 to 3 mtrs Diameter. Here is a link for you to have a look at. It is Sunpulse Engine around 1.5kW at Tamera Village.
Trev
by Trevor
Sun Jun 16, 2019 5:17 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Robinson Hot Air Engine
Replies: 10
Views: 207

Re: Robinson Hot Air Engine

The Pictures as finished articles
Trev
by Trevor
Sun Jun 16, 2019 5:15 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Robinson Hot Air Engine
Replies: 10
Views: 207

Re: Robinson Hot Air Engine

Know that feeling Ian (hee hee). Here are some pictures of the finished parts I did. I still need to finish the meths burner and fire box proper. Had to borrow a milling machine from my mate to make water channels in the main block and then screw on a top plate, Whew!!! That was a chore and many scr...
by Trevor
Sat Jun 15, 2019 2:19 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Robinson Hot Air Engine
Replies: 10
Views: 207

Re: Robinson Hot Air Engine

Pretty awesome. Certainly would be nice to have one of those. I made up the displacer and the regenerator and finally got it all together today. I ended up with a 20mm depth displacer and a 20mm stroke. Fired it up and away she went. Pretty good watching the linkage work. I will set up some pics aft...
by Trevor
Thu Jun 13, 2019 5:13 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Robinson Hot Air Engine
Replies: 10
Views: 207

Re: Robinson Hot Air Engine

Thanks Ian. Nice looking engines and I hope mine will look something of the same. I used a small milling machine from a neighbour to make a water channel through the top section and I might as well make a small water cooler on the bottom as well. After a lot of thought, I will go with an internal re...
by Trevor
Wed Jun 12, 2019 3:24 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Robinson Hot Air Engine
Replies: 10
Views: 207

Robinson Hot Air Engine

HI all I am in the process of making a Robinson Sterling engine with a piston diameter of 39mm and a stroke of 34mm giving me a 40.6CC volume. My displacer cylinder is 69mm internal diameter (stainless Steel). With a ratio of approx 1.6:1 the displacer cylinder has a stroke of 18mm which isn't much ...
by Trevor
Fri Mar 08, 2019 3:56 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: My First Rhombic Drive Engine
Replies: 7
Views: 832

Re: My First Rhombic Drive Engine

Hi Vjdeep Nice looking motor and well done. It appears that your piston and liner are both alloy - If this is so you will have an enormous amount of friction as alloy to alloy will gall and cause trouble to you. If you can change the liner to steel or cast iron. Ian knows a lot about this problems a...
by Trevor
Sat Feb 02, 2019 1:24 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: cold acceptor in cold head for cryocooler
Replies: 3
Views: 664

Re: cold acceptor in cold head for cryocooler

Hi Ian & Yakka Reference to your observation of a person using the cold water from gas. I built a nice Beta motor for a friend just recently and we had all sorts of problems with the gas container going so cold that the motor would stop due to very little heat caused from bottle getting to cold and ...