Search found 146 matches

by cbstirling2
Sun Nov 04, 2018 6:05 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Design and Manufacture of Beta Stirling
Replies: 8
Views: 1039

Re: Design and Manufacture of Beta Stirling

After receiving it in the mail, I was puzzled as well. Why on Earth, is there so few cooling fins and not all the way up? I wish I had a lathe! Installing aluminum fins could be done in a clamping fashion so they could be removed if need be. Maybe I could drill out finned computer heat sinks? Take 2...
by cbstirling2
Sat Nov 03, 2018 8:12 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Design and Manufacture of Beta Stirling
Replies: 8
Views: 1039

Re: Design and Manufacture of Beta Stirling

Speaking of cooling area, this is a dual gamma engine that I recently purchased from Germany. It runs good but I think it could run even better. I think there should be fins or a water jacket on the upper part of the displacer. I see no reason for that area to be "bare". Do others agree? IMG_2018110...
by cbstirling2
Sat Nov 03, 2018 7:40 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Sterling Engine not running
Replies: 6
Views: 516

Re: Sterling Engine not running

I have one of those engines, a good runner. That's an alpha engine, so no gland and no displacer. It should only be lubricated with extremely fine graphite powder. I recommend cleaning pistons and cylinders with cotton q-tips and rubbing alcohol. After you assemble it again, when you turn it over, y...
by cbstirling2
Sun Aug 19, 2018 7:10 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Small Stirling Engine
Replies: 10
Views: 1230

Re: Small Stirling Engine

I have the same Stirling engine and "generator" and I believe it easily lights the led. Perhaps the generator is faulty presuming your engine has good RPM.

Sent from my PH-1 using Tapatalk
by cbstirling2
Sun Jun 24, 2018 6:06 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Whispergen mk4
Replies: 14
Views: 1448

Re: Whispergen mk4

Any luck getting the whisper gen running again?
by cbstirling2
Fri May 25, 2018 1:09 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Whispergen mk4
Replies: 14
Views: 1448

Re: Whispergen mk4

Mk5 was quite popular in germany, you could get them on ebay.de for 150 ey for not working, 1000-1500 used, 3000++ for new. But they have cracking hot side heat exchangers. About mine - do not imagine too. On one motor lime scale popped up cold heat exchanger and water got inside. On other dont ima...
by cbstirling2
Fri May 25, 2018 1:08 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Whispergen mk4
Replies: 14
Views: 1448

Re: Whispergen mk4

So cool!
by cbstirling2
Wed Apr 11, 2018 5:36 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Noob question - would these parts work?
Replies: 23
Views: 2771

Re: some alpha engines have displacers

Blaf, some alphas have displacers and since you have not started building yet, I would encourage you to consider the possibility in your design. Usually, this has the result of moving the rings of the the hot piston a good distance from the heat. Directly heating the cylinder and piston is rather p...
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: 1979

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: 1979

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: 1149

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: 1657

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: 2424

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: 1657

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: 2424

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...