Search found 156 matches
- Sat Jan 21, 2017 4:08 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Multiple tube Thermal Acoustic engine
- Replies: 11
- Views: 10349
Re: Multiple tube Thermal Acoustic engine
Clever. Does the heat need to be concentrated at one end of the tubes? I wonder if a wood fire could be applied along the tube heat exchanger. What watt output does it have? How long can it run? (Gives clues how well it dumps heat.) I wonder how much better it would run with cooling fins (with belt ...
- Mon Jan 09, 2017 7:52 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Book about striking engine design
- Replies: 18
- Views: 19860
Re: Book about striking engine design
Lloyd's thesis LOW TEMPERATURE DIFFERENTIAL STIRLING ENGINE FOR POWER GENERATION is a very good read that have tons numerical graphs and charts. One can find the PDFs by Google the title as mentioned. Another good PDF is by Normani From Lloyd's paper: Screenshot_2017-01-08-12-13-28.png See Alpha eng...
- Mon Jan 09, 2017 7:46 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: stovetop engine, and maybe more.
- Replies: 13
- Views: 10304
Re: stovetop engine, and maybe more.
Been reading about them, Square wave movement matches more the actual cycle. The screenshot is from Lloyd's thesis paper. LOW TEMPERATURE DIFFERENTIAL STIRLING ENGINE FOR POWER GENERATION
- Sun Jan 08, 2017 8:48 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: stovetop engine, and maybe more.
- Replies: 13
- Views: 10304
Re: stovetop engine, and maybe more.
So the ringbom is more powerful than the gamma? Is generally true?Ian S C wrote: I built this one and another one that is a Ringbom motor, similar lay out, but it is too noisy, and it is actually too powerful.
Ian S C
Also why is it "too powerful"?
Do you have pictures of the Ringbom motor?
- Sun Jan 08, 2017 8:23 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Got a used larger hobby engine, start up prep?
- Replies: 14
- Views: 8191
Re: Got a used larger hobby engine, start up prep?
Ian, thank you for your insight. I see several things to try: 1. Run the engine vertical as a test. 1a. I suspect it would be best to have the displacer dangle rather than be on top. Although if I make a new stand I'd have to redesign the propane nozzle. 2. Remove a flywheel. (Easy to slide off.) Th...
- Sun Jan 08, 2017 12:20 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Got a used larger hobby engine, start up prep?
- Replies: 14
- Views: 8191
Re: Got a used larger hobby engine, start up prep?
received_10211821820161421.jpeg To clean up the engine ended up taking a lot of it apart. One thing that I learned is that would never build an engine this way. The crankshaft assembly in my opinion is way too heavy. A shared crank with a 90 deg offset would be far simpler and more performance. Als...
- Sun Jan 08, 2017 12:02 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Got a used larger hobby engine, start up prep?
- Replies: 14
- Views: 8191
Re: Got a used larger hobby engine, start up prep?
https://youtu.be/C5dTOb_-kCk
I got the engine, is in dire need of a tune-up as the oil was Gummy and one of the bearing blocks was rubbing a bit.
I got the engine, is in dire need of a tune-up as the oil was Gummy and one of the bearing blocks was rubbing a bit.
- Fri Jan 06, 2017 10:57 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Glass and graphite piston sets
- Replies: 16
- Views: 26038
Re: Glass and graphite piston sets
http://airpot.com/product-category/prod ... nder-sets/
This needs to bumped to the top!
This needs to bumped to the top!
- Fri Jan 06, 2017 7:41 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Got a used larger hobby engine, start up prep?
- Replies: 14
- Views: 8191
Re: Got a used larger hobby engine, start up prep?
Looks like the machinist made a steel cup and then screwed in a brass piece.
The crank shaft design is interesting. It is a steel bar about an inch diameter.
As before, I am curious to lubrication requirements
The crank shaft design is interesting. It is a steel bar about an inch diameter.
As before, I am curious to lubrication requirements
- Fri Jan 06, 2017 6:38 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Got a used larger hobby engine, start up prep?
- Replies: 14
- Views: 8191
- Fri Jan 06, 2017 6:11 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Got a used larger hobby engine, start up prep?
- Replies: 14
- Views: 8191
Re: Got a used larger hobby engine, start up prep?
On the power side, the cylinder is lined with a thin magnetic sleeve. (Steel I presume) The piston itself is more difficult to determine. I think it is steel as well since a little magnet sticks as well. On the inside of the piston there is lamp black. Ian, what do you recommend for lubrication when...
- Fri Jan 06, 2017 4:14 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Heater & Regenerator Design
- Replies: 60
- Views: 55865
Re: Heater & Regenerator Design
Rich, I hope you publish your results. Any thoughts on snifter design?
- Fri Jan 06, 2017 4:12 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Heater & Regenerator Design
- Replies: 60
- Views: 55865
Re: Heater & Regenerator Design
I have seen some builders thermally isolate the hot and cold halves of the displacer so the mass of the displacer acts as a regenerator. So think 2 cans glued together with insulator in middle. In order to allow for pressurized engines, I've read that some builders put a pin hole in the displacer. C...
- Wed Jan 04, 2017 10:02 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: varible phasing
- Replies: 27
- Views: 24520
Re: varible phasing
In Andy Ross's book he mentions that he tested phasing from 60 degrees to 180 degrees with interesting results at narrower angles the compression became higher and more difficult to start and required higher temperatures even to run. But when it did run "it did so with great power and speed&qu...
- Tue Jan 03, 2017 7:08 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Book about striking engine design
- Replies: 18
- Views: 19860
Re: Book about striking engine design
I have the same book,. Just arrived today. It is one of the best books I have read in a long time and am excited about the crank system. Trevor Where does one find a reasonably priced version of Rizzo's book? "The Stirling Engine Manual vol 1" $90 from amazon is too steep... In this write...