Search found 228 matches

by Trevor
Tue Feb 18, 2020 4:02 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Gamma Engine with Bailey Linkages
Replies: 2
Views: 8177

Gamma Engine with Bailey Linkages

I had an old Gamma engine and wanted to do something else with it, so decided to add a bailey's linkage to it. The idea was to get a smooth slow running engine with a little more horsepower than my other models. This turned out to be a successful engine and was pleased with the results. I have tried...
by Trevor
Tue Feb 18, 2020 3:50 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Developing a 1000w generator based on approtechies' design
Replies: 32
Views: 36564

Re: Developing a 1000w generator based on approtechies' design

Danalinscott
Very nice design for further development. Hope you have success with it as I too have been using rubber diaphragms for engines and found them to very efficient.
Some pics would be nice when you have completed the prototype.
Trev
by Trevor
Sun Oct 13, 2019 2:00 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Gamma Engine - Small for Mine Site Model
Replies: 2
Views: 8887

Re: Gamma Engine - Small for Mine Site Model

Sure do Thanh - Been a while.
I will try to do some videos of some of the models for you and post the links. It will be a few weeks though Thanh.
Trev
by Trevor
Wed Oct 09, 2019 6:24 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Gamma Engine - Small for Mine Site Model
Replies: 2
Views: 8887

Gamma Engine - Small for Mine Site Model

Thought I might share this photo of a Mine Site I just finished building for our Cairns Gemfest Next Year. It is a small Gamma engine which seems to have abundant power running a water pump from the lake to cool the engine and also runs the 3 leg Battery Stamper. Quite impressive when it is up and r...
by Trevor
Sat Jun 22, 2019 1:32 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Proposed Air Cooling Tower
Replies: 7
Views: 17124

Re: Proposed Air Cooling Tower

Hi Mike and Ian
I would be running the model for a couple of hours. Water evaporation isn't a problem as the bottom tank would be getting topped up as it is being used.
Trev
by Trevor
Sat Jun 22, 2019 12:15 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Robinson Hot Air Engine
Replies: 14
Views: 34793

Re: Robinson Hot Air Engine

The pic shows the water pump and gearing for same. I originally had problems with the heater with so much back heat onto the burner and wood work I had to change it dramatically.
by Trevor
Sat Jun 22, 2019 12:03 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Robinson Hot Air Engine
Replies: 14
Views: 34793

Re: Robinson Hot Air Engine

Nice one Ian - I made a few changes to the motor and also removed the door. It is now fitted with a water pump and runs extremely well. One good thing it runs at a realistic slow speed and the water cooling works quite well as the only cooling the engine has is the top plate. Here's a pic of it with...
by Trevor
Thu Jun 20, 2019 3:04 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Proposed Air Cooling Tower
Replies: 7
Views: 17124

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: 7
Views: 17124

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: 14
Views: 34793

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: 7
Views: 17124

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: 14
Views: 34793

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: 10397

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: 10397

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=shar...
by Trevor
Sun Jun 16, 2019 5:41 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Ltd engine?
Replies: 4
Views: 10397

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. https://www.youtube.com/watch?v=iSoXWt4hBpc It is Sunpulse Engine around 1.5kW at Tamera Village.
Trev