Search found 156 matches
- Tue Jan 03, 2017 6:50 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Book about striking engine design
- Replies: 18
- Views: 16842
Re: Book about striking engine design
The crank angle is automatically set by the yoke, it's not 90*, but seems to work ok, I did see the angles somewhere, but can't remember. Ian S C Ian wrote on another post: "All of my BETA and GAMMA motors are set at 90*,the ALPHA motor is a Ross Yoke type, and the angle is somewhat different,...
- Tue Jan 03, 2017 5:38 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: What are the challenges for making an engine that does real work?
- Replies: 18
- Views: 14463
Re: What are the challenges for making an engine that does real work?
If one used a magnetic clutch, one could completely enclose the stirling engine with the only seal being the Schrader valve. The benefit here being good being no seals against a moving shaft, so that be very simple I would suspect. Has anyone tried this? Looks like someone patented the idea back in ...
- Tue Jan 03, 2017 9:43 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Alpha type stirling engine Problem
- Replies: 8
- Views: 7496
Re: Alpha type stirling engine Problem
Ian, what do you think is a lifetime of a graphite piston? What about Teflon?
- Tue Jan 03, 2017 8:07 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Plans for powerful Stirling engines
- Replies: 5
- Views: 7082
Re: Plans for powerful Stirling engines
The link went to Mini-Ecoboy. Which does not show the picture that you posted. Also that engine has helium as the working gas. That would make the engine extra complicated. I read it be better just to use regular compressed air like the ST-5.
- Mon Jan 02, 2017 10:46 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: What are the challenges for making an engine that does real work?
- Replies: 18
- Views: 14463
Re: What are the challenges for making an engine that does real work?
I can't find the site, but there was a motor (?5hp)designed in USA to be built in Bangladesh from locally found materials, and be fueled with rice husks, there is also a book about it. Ian S C Be warned, there are actually two engines involved surrounding that book. The book was written by someone ...
- Mon Jan 02, 2017 10:31 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Stirling Engines are difficult to analyse
- Replies: 6
- Views: 5694
Re: Stirling Engines are difficult to analyse
Is there a URL to a Dalhousie university team report that claims that dead space does not impact performance?
- Mon Jan 02, 2017 6:56 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Stirling Engines are difficult to analyse
- Replies: 6
- Views: 5694
Re: Stirling Engines are difficult to analyse
I too have seen the YouTube video where he talks about the dead volume to control the speed of his motor. However in thermal acoustic engines, a lot of times there needs to be a vast amount of space to set up the oscillation. So this is just a thought, but on that gammaxengine when the professor use...
- Mon Jan 02, 2017 8:41 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Got a used larger hobby engine, start up prep?
- Replies: 14
- Views: 7764
- Mon Jan 02, 2017 8:38 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Got a used larger hobby engine, start up prep?
- Replies: 14
- Views: 7764
Re: Got a used larger hobby engine, start up prep?
Here is a side view.
- Mon Jan 02, 2017 8:28 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Got a used larger hobby engine, start up prep?
- Replies: 14
- Views: 7764
Got a used larger hobby engine, start up prep?
I recently acquired a gamma engine built apparently by a machinist. (It's being shipped to me.) What should I do to prep the engine? Was planning to clean up the old oil and whatnot with gun cleaner spray. For the power piston bore I was planning to lubricated with dry graphite. For the linkages was...
- Mon Jan 02, 2017 7:57 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Alpha type stirling engine Problem
- Replies: 8
- Views: 7496
Re: Alpha type stirling engine Problem
I think he's looking for a ballpark advice.
I don't know much about alphas, with head off, your engine must spin very freely.
On one of my models was running poorly, so I lubrication with graphite and now it runs really good. I suspect those motorcycle Rings might be a problem.
I don't know much about alphas, with head off, your engine must spin very freely.
On one of my models was running poorly, so I lubrication with graphite and now it runs really good. I suspect those motorcycle Rings might be a problem.
- Sun Jan 01, 2017 7:26 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: My stirling engine , now it runs on alcohol stoves ! Special thanks Lan SC !,
- Replies: 10
- Views: 7551
Re: My stirling engine , now it runs on alcohol stoves ! Special thanks Lan SC !,
What material do you use as an insulator between the hothead and the cooler side of the displacer cylinder?thanh-cuibap wrote:https://www.youtube.com/watch?v=Kn3ZidE ... e=youtu.be
now it runs on alcohol stoves
- Sun Jan 01, 2017 7:25 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: My stirling engine , now it runs on alcohol stoves ! Special thanks Lan SC !,
- Replies: 10
- Views: 7551
Re: My stirling engine , now it runs on alcohol stoves ! Special thanks Lan SC !,
Hi Thanh, Just seen your video. A beautifully made machine. Just wondering, have you ever considered also building one that can be used to perform real work in rural settings? I know this isn't a reference to a stirling engine, but maybe 4 cycle engine could be ran on a wood gasifier? I've seen tha...
- Sun Jan 01, 2017 7:14 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: A Timing question
- Replies: 8
- Views: 9084
Re: A Timing question
All of my BETA and GAMMA motors are set at 90*... [img] FXYLK5KHO236DGO_MEDIUM.jpg [/img] From the sounds of it, you did that experimentation and found that 90 degrees is best anyhow? From your own experience, do you ever think that a variable timing would be useful? Also one more question, from wh...
- Sat Dec 31, 2016 10:40 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Snifting valve
- Replies: 30
- Views: 17779
Re: Snifting valve
Let's say an Ltd made out of stainless. If you apply more heat than expected, doesn't the extra pressure slow the engine down??Ian S C wrote:If you put too much heat under a LTD motor like mine you get melt down, my one has a foam plastic displacer, and it doesn't take much to melt it.
Ian S C