Search found 153 matches

by cbstirling2
Mon Mar 05, 2018 1:51 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Converting Compressor to an Alpha Stirling Engine
Replies: 7
Views: 3886

Re: Converting Compressor to an Alpha Stirling Engine

I could only find one that was barely based off a Chrysler AC compressor. They had to rework so much, that they could have easily started from scratch.
by cbstirling2
Thu Mar 01, 2018 5:53 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Converting Compressor to an Alpha Stirling Engine
Replies: 7
Views: 3886

Re: Converting Compressor to an Alpha Stirling Engine

Has anyone any where actually been successful in converting an air compressor to a Stirling engine??
by cbstirling2
Mon Feb 19, 2018 8:27 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Blechspielzeug engines
Replies: 2
Views: 1917

Blechspielzeug engines

I noticed ministeam is selling this apparently larger model? Any thoughts about it?

https://www.ministeam.com/acatalog/Stir ... ml#SID=342


;)
by cbstirling2
Mon Feb 19, 2018 6:26 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: More volume on the hot side?
Replies: 7
Views: 3079

Re: More volume on the hot side?

Ian S C wrote:The cold piston should have as little bulk as possible to enhance the rate of cooling, the crown is only effective on the hot cylinder.
Ian S C
Oh I see, the additional thermo mass outweighs the conduction from surface area?

thanks
by cbstirling2
Sun Feb 18, 2018 5:02 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Making a stirling engine 5 kw generator
Replies: 8
Views: 4542

Re: BTU of common fuels per pound

In researching this question, not all researchers come up with exactly the same figures. Please forgive any "errors" in the collected information. It is only meant as a general guide. BTU per pound of some common fuels Hydrogen 52,290 BTU per pound Acetylene 21,850 Propane 21,660 Gasoline 19,500 Ke...
by cbstirling2
Sat Feb 17, 2018 4:26 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: More volume on the hot side?
Replies: 7
Views: 3079

Re: More volume on the hot side?

The hot side on my design is quite far away from the hot side, so heat creep shouldn't really be a problem. So if heat really is the only reason, my question is answered. The crown increases the surface area to conduct heat. In my opinion, it's a good idea to have a crown on both pistons. I'd made ...
by cbstirling2
Sat Feb 17, 2018 4:20 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Making a stirling engine 5 kw generator
Replies: 8
Views: 4542

Re: Making a stirling engine 5 kw generator

I have a funded project on making a stirling engine 5 kw generator Have you anyone had done or experienced stirling engine that can generate 5 kw can give me some information about the size of the power piston? the diameter of the displacer? engine type: (alpha, beta, or gamma) ?? As much informati...
by cbstirling2
Sat Feb 03, 2018 4:42 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Cant find old website
Replies: 5
Views: 2442

Re: Cant find old website

This engine Japan is pretty and a superb runner.
Generates meaningful power.
Less expensive than Boehm as well.
https://www.ebay.com/itm/Desktop-Stirli ... 2136054651
I think the engine had a limited production run as the manufacturing company seems out of business.
by cbstirling2
Sat Feb 03, 2018 4:35 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Cant find old website
Replies: 5
Views: 2442

Re: Cant find old website

Quite the contrary. Boehm engines are junk imho. Make it run before you make something pretty.
by cbstirling2
Wed Jan 24, 2018 10:10 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: alpha engine question
Replies: 3
Views: 2097

Re: alpha engine question

Well with alpha, both pistons and cylinders can be identical on same crank pin 90 apart.
Displacer is misnomer here. Either hot or cold piston.
by cbstirling2
Sun Jan 07, 2018 8:54 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: First Sterling Finally Running
Replies: 24
Views: 8517

Re: First Sterling Finally Running

6500 rpm that's too fast imho. I recommend placing a load on it to see how many watts you generate. Do this set up: hook up a electric generator (a low voltage motor) via a rubber band belt. Send its power to a lower voltage motor. If the generator is AC, send it thru a bridge rectifier. Measure the...
by cbstirling2
Sat Jan 06, 2018 7:03 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Silver soldering stainless steel hot end
Replies: 12
Views: 3548

Re: Silver soldering stainless steel hot end

Oops, the cadium is tocic. I'd steer clear from them.
by cbstirling2
Sat Jan 06, 2018 6:59 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Silver soldering stainless steel hot end
Replies: 12
Views: 3548

Re: Silver soldering stainless steel hot end

So NiCd batteries are in a stainless cup?
So to be safe, one must drain the battery?
What happens if one tries to burn the other parts out by tossing them into a campfire?
by cbstirling2
Thu Jan 04, 2018 11:44 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling engines with an internal spring question
Replies: 16
Views: 4856

Re: Stirling engines with an internal spring question

Alfista, I just looked at YouTube. Neat gamma engine I saw. Big question, I saw you are able to generate over 12 volts but what about amps? A simple way to test for that is to hook your set up to another motor to act as a load. And then using two multimeters check for voltage as well as amps. Presto...
by cbstirling2
Thu Jan 04, 2018 11:29 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Open crank horizontal engine conversion to Stirling cycle.
Replies: 8
Views: 2409

Re: Open crank horizontal engine conversion to Stirling cycle.

I think a horizontal cylinder has too much friction imho.