Mike,
Thank you for your response. I like the way you worded it.  Apparently the
person in the other group who suggested that such Sterlings would be an easy to
come by and practical energy source will believe nearly anything.
Harold

--- In warmairmotors@yahoogroups.com, Mike or Carmen Dugan <mikenmenchie@...>
wrote:
>
>
> I've been on this list a while, nothing like that's come up. All
> anyone's talked about is either way over the DIY'er's abilities, or a toy.
>
> I could have missed something.
>
> I'd be very interested in the same thing, for local power here in the US.
>
> Posted by: "oldsagebrush"
> > This is my first post.
> > I joined this group to ask the question addressed in this thread
>  > and specifically in RJM's post below.  I belong to a group that
> > is looking for a way to power an auto alternator which would in
> > turn charge batteries and provide electricity in the third world.
> > If anyone can point me to plans for or an example of such an engine
> > that could be made from parts found in a junkyard, it would be
> > greatly appreciated.    My experience with Sterling engines is
> > mostly limited to what I've learned on the internet. So, if such
> > a Sterling isn't practical please tell me so we can seek a
> > different power source.
>
>
> RJM <gandsnut@> wrote:
> >> True.
> >>
> >> However, for those of us who could apply a DIY (Do It Yourself)
> >> Stirling to a work application, we don't have the resources for
> >> exotic machining of expensive metals, high-tolerance parts,
> >> liquid helium, etc.
> >>
> >> It seems to me that the Stirling engine, "modernized", holds
> >> enormous potential not for the advanced application, but for
> >> the mundane.
> >>
> >> For example, the "3rd world" that lives in squalor and struggles
> >> to exist will not benefit from one $500K cutting edge Stirling,
> >> as much as they would from a thousand $500 DIY Stirling engines,
> >> pumping water, even more importantly, generating electricity.
> >>
> >> I see this as a huge positive for all nations to pursue
> >> self-sufficiency rather than have vast, lopsided global
> >> emigration, relocation based on standard of living. It is
> >> akin to the "give me a fish/teach me to fish" scenario.
> >> Rather than build shiny desktop toy Stirlings, I'd love to
> >> see non-profit research publish freely accessible plans on
> >> "upsizing" a Stirling to the kilowatt range, using at-hand
> >> materials.
> >>
> >> I spoke with local organizations and agencies about the
> >> non-profit research angle, and was surprised to find out
> >> they already knew about the Stirling Renaissance.  But,
> >> none had any interest in starting a non-profit that would
> >> come up with upsized Stirling parameters that would be
> >> within the DIY community's ability.  Apparently, the
> >> economics just "weren't there" for such an untapped
> >> potential.  Or, they were quick to say, "yes, go ahead
> >> with your great idea [as long as you find the funding]".
> >>
> >> While toys and models are fine for entertainment, where
> >> would the aviation industry be if the jet engine was
> >> only ever built to be an entertaining model on some table?
> >>
> >> Regards,
> >> RJM
> >>
> >> ==========
> >>
> >> There are many Stirlings out there doing real work. The ones that come to
> >> mind for me are used as coolers for liquid Helium in the electro magnets
> >> for medical scanners and photographic (infrared) sensors for satellites.
> >> I used to work in the next lab to this group:
> >> http://www.eng.rl.ac.uk/asd/crg/projects/closed-cycle-coolers/index.html
>
>
> RJM <gandsnut@> wrote:
> >>> Has anybody built or know of an operating Stirling that
> >>> actually does significant work, and is not pre-1900?
> >>> Or, where plans might be for a scaled-up Stirling that
> >>> is not a model?
>

I've been on this list a while, nothing like that's come up. All
anyone's talked about is either way over the DIY'er's abilities, or a toy.

I could have missed something.

I'd be very interested in the same thing, for local power here in the US.

Posted by: "oldsagebrush"
> This is my first post.
> I joined this group to ask the question addressed in this thread
  > and specifically in RJM's post below.  I belong to a group that
> is looking for a way to power an auto alternator which would in
> turn charge batteries and provide electricity in the third world.
> If anyone can point me to plans for or an example of such an engine
> that could be made from parts found in a junkyard, it would be
> greatly appreciated.    My experience with Sterling engines is
> mostly limited to what I've learned on the internet. So, if such
> a Sterling isn't practical please tell me so we can seek a
> different power source.


RJM <gandsnut@...> wrote:
>> True.
>>
>> However, for those of us who could apply a DIY (Do It Yourself)
>> Stirling to a work application, we don't have the resources for
>> exotic machining of expensive metals, high-tolerance parts,
>> liquid helium, etc.
>>
>> It seems to me that the Stirling engine, "modernized", holds
>> enormous potential not for the advanced application, but for
>> the mundane.
>>
>> For example, the "3rd world" that lives in squalor and struggles
>> to exist will not benefit from one $500K cutting edge Stirling,
>> as much as they would from a thousand $500 DIY Stirling engines,
>> pumping water, even more importantly, generating electricity.
>>
>> I see this as a huge positive for all nations to pursue
>> self-sufficiency rather than have vast, lopsided global
>> emigration, relocation based on standard of living. It is
>> akin to the "give me a fish/teach me to fish" scenario.
>> Rather than build shiny desktop toy Stirlings, I'd love to
>> see non-profit research publish freely accessible plans on
>> "upsizing" a Stirling to the kilowatt range, using at-hand
>> materials.
>>
>> I spoke with local organizations and agencies about the
>> non-profit research angle, and was surprised to find out
>> they already knew about the Stirling Renaissance.  But,
>> none had any interest in starting a non-profit that would
>> come up with upsized Stirling parameters that would be
>> within the DIY community's ability.  Apparently, the
>> economics just "weren't there" for such an untapped
>> potential.  Or, they were quick to say, "yes, go ahead
>> with your great idea [as long as you find the funding]".
>>
>> While toys and models are fine for entertainment, where
>> would the aviation industry be if the jet engine was
>> only ever built to be an entertaining model on some table?
>>
>> Regards,
>> RJM
>>
>> ==========
>>
>> There are many Stirlings out there doing real work. The ones that come to
>> mind for me are used as coolers for liquid Helium in the electro magnets
>> for medical scanners and photographic (infrared) sensors for satellites.
>> I used to work in the next lab to this group:
>> http://www.eng.rl.ac.uk/asd/crg/projects/closed-cycle-coolers/index.html


RJM <gandsnut@...> wrote:
>>> Has anybody built or know of an operating Stirling that
>>> actually does significant work, and is not pre-1900?
>>> Or, where plans might be for a scaled-up Stirling that
>>> is not a model?

Hi guys,
This is my first post.
I joined this group to ask the question addressed in this thread and
specifically in RJM's post below.  I belong to a group that is looking for a way
to power an auto alternator which would in turn charge batteries and provide
electricity in the third world.  If anyone can point me to plans for or an
example of such an engine that could be made from parts found in a junkyard, it
would be greatly appreciated.    My experience with Sterling engines is mostly
limited to what I've learned on the internet. So, if such a Sterling isn't
practical please tell me so we can seek a different power source.
Sincerely,
Harold Epps

--- In warmairmotors@yahoogroups.com, RJM <gandsnut@...> wrote:
>
> Robert:
>
> True.
>
> However, for those of us who could apply a DIY (Do It Yourself)
> Stirling to a work application, we don't have the resources for
> exotic machining of expensive metals, high-tolerance parts,
> liquid helium, etc.
>
> It seems to me that the Stirling engine, "modernized", holds
> enormous potential not for the advanced application, but for
> the mundane.
>
> For example, the "3rd world" that lives in squalor and struggles
> to exist will not benefit from one $500K cutting edge Stirling,
> as much as they would from a thousand $500 DIY Stirling engines,
> pumping water, even more importantly, generating electricity.
>
> I see this as a huge positive for all nations to pursue
> self-sufficiency rather than have vast, lopsided global
> emigration, relocation based on standard of living. It is
> akin to the "give me a fish/teach me to fish" scenario.
> Rather than build shiny desktop toy Stirlings, I'd love to
> see non-profit research publish freely accessible plans on
> "upsizing" a Stirling to the kilowatt range, using at-hand
> materials.
>
> I spoke with local organizations and agencies about the
> non-profit research angle, and was surprised to find out
> they already knew about the Stirling Renaissance.  But,
> none had any interest in starting a non-profit that would
> come up with upsized Stirling parameters that would be
> within the DIY community's ability.  Apparently, the
> economics just "weren't there" for such an untapped
> potential.  Or, they were quick to say, "yes, go ahead
> with your great idea [as long as you find the funding]".
>
> While toys and models are fine for entertainment, where
> would the aviation industry be if the jet engine was
> only ever built to be an entertaining model on some table?
>
> Regards,
> RJM
>
> ==========
>
> There are many Stirlings out there doing real work. The ones that come to
> mind for me are used as coolers for liquid Helium in the electro magnets
> for medical scanners and photographic (infrared) sensors for satellites.
> I used to work in the next lab to this group:
> http://www.eng.rl.ac.uk/asd/crg/projects/closed-cycle-coolers/index.html
>
> Robert
>
>
> On Sun, Jun 21, 2009 at 3:33 AM, RJM <gandsnut@...> wrote:
>
> > Has anybody built or know of an operating Stirling that
> > actually does significant work, and is not pre-1900?
>
> > Or, where plans might be for a scaled-up Stirling that
> > is not a model?
>
> > Thanks,
> > RJM
>
>
> [Non-text portions of this message have been removed]
>

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An electronic resource dating from 1904, Plans for the construction of an 1/8 HP
engine. Could be constructed on a 7 x 10 lathe, but you would have to reduce the
flywheel diameter a little.

<http://chestofbooks.com/crafts/popular-mechanics/Amateur-Work-3/A-Hot-Air-Engin\
e.html>

If you go to the index at:
<http://chestofbooks.com/crafts/popular-mechanics/Amateur-Work-3/index.html>
there is lots of other interesing articles.

Hello Mike,
Sorry for my tea, but sometimes it is not that bad to smell at another bland for
once.
Yes I am working on a prototype right now; simple at first glance, but the
sealings and linings will be the challenge.
For all my IC engines I choose for rather low compression 1 to 3 or 1 to 4. They
run easy on that with rather low power, but high power is not my intention at
all. As soon as the thing is running reliable and for some 5 minutes per run for
a succesfull demonstration I am very satisfied.
Thanks for your reaction and friendly greetings,
Jan


 



________________________________
From: Mike or Carmen Dugan <mikenmenchie@...>
To: warmairmotors@yahoogroups.com
Sent: Monday, August 10, 2009 8:40:22 PM
Subject: [warmairmotors] Re: Split cylinder IC engine with rotary pistons

 
Posted by: "Jan Ridders" riddersjan@yahoo. com riddersjan
> I am glad you accept this issue unless it is somewhat off topic, sorry
> for that and I thank you for your positive reaction anyhow.

Yeah, it's not like anyone's posting anything else....
:)

> Sometimes there are issues just a little bit left or right from topic,
> but I personally like them more than the numerous messages that have
> completely nothing to do with building model engines. I simply delete
> them with the delete button which is one of the advantages of the PC.

Yeah, it's not another scam, so it's not spam.

I can appreciate the work you put into your engines, most of it's just
not my cup of tea.

The 'Sleeve Engine' thing, however, is a new application for a familiar
concept - something that I like seeing. Do you plan on making one as a
test of concept? I can see making the first cylinder larger to increase
compression on the second one. You'd have to do some math and
measurements to figure that out. I'm not sure what kind of compression
ratio you'd need, but IIRC, the modern engines I've seen are anywhere
from 7.5 to 10.5. Diesels are even higher - 12 to 15, I think.






[Non-text portions of this message have been removed]

Posted by: "Jan Ridders" riddersjan@... riddersjan
  > I am glad you accept this issue unless it is somewhat off topic, sorry
  > for that and I thank you for your positive reaction anyhow.

Yeah, it's not like anyone's posting anything else....
:)

  > Sometimes there are issues just a little bit left or right from topic,
  > but I personally like them more than the numerous messages that have
  > completely nothing to do with building model engines. I simply delete
  > them with the delete button which is one of the advantages of the PC.

Yeah, it's not another scam, so it's not spam.

I can appreciate the work you put into your engines, most of it's just
not my cup of tea.

The 'Sleeve Engine' thing, however, is a new application for a familiar
concept - something that I like seeing. Do you plan on making one as a
test of concept? I can see making the first cylinder larger to increase
compression on the second one. You'd have to do some math and
measurements to figure that out. I'm not sure what kind of compression
ratio you'd need, but IIRC, the modern engines I've seen are anywhere
from 7.5 to 10.5. Diesels are even higher - 12 to 15, I think.

Hello James,
I am glad you accept this issue unless it is somewhat off topic, sorry for
that and I thank you for your positive reaction anyhow.
Sometimes there are issues just a little bit left or right from topic, but I
personally like them more than the numerous messages that have completely
nothing to do with building model engines. I simply delete them with the delete
button which is one of the advantages of the PC.
Thanks again,
Jan Ridders


 



________________________________
From: JAMES M DUGAN <mikenmenchie@...>
To: warmairmotors@yahoogroups.com
Sent: Saturday, August 8, 2009 1:28:39 AM
Subject: [warmairmotors] Re: Split cylinder IC engine with rotary pistons

 

I'm not going to say this is off topic, but I thought the list was for Stirling
type engines.

HOWEVER...this is interesting.

Posted by: "Jan Ridders" riddersjan@yahoo. com
> I made a concept design for a model IC engine with rotary
> pistons. Not with the (first) intention to make a more
> efficient engine because I can't calculate or judge that;
> probably other experts in this field can do that. My only

Yeah, I can't figure out how to do that either. I think you'd need to get
something running and make a few measurements. You'd also have to post some
dimensions like swept volume, compression ration, etc...

> goal was to design a model with rotary pistons that can be
> made by model builders with moderate mechanical skills and
> tools like me.  In my humble opinion that is not the
> case with most other designs for rotary piston IC engines.
> Most of the time the pistons have very complex geometries
> and/or  (wobbling) movements in  cylinders with
> accordingly complex geometries; very difficult to make for
> model builders and sometimes even for professionals.
> This time I worked the other way around: first making an
> animation based on a silly idea so I could see and
> understand what could happen there, keeping the good things
> and changing the wrong ones until I could not "shoot a hole
> in it" anymore (free translation of a Dutch saying).
> You can see the animation on YouTube:

http://www.youtube. com/watch? v=trbELm2918Q& feature=channel_ page

> Same video and short provisional description on my web
> site:

http://heetgasmodel bouw.ridders. nu/
http://heetgasmodel bouw.ridders. nu/Webpaginas/ pagina_roterende _zuigers/
roterende_ zuigers_frameset .htm

> If anyone can shoot that fatale hole with good arguments
> please tell me that preventing me to put useless efforts in
> making a running prototype.
> Greetings from sunny Holland,

I can't see anything that would keep it from working. It's similiar to some air
tool motors I've seen.






[Non-text portions of this message have been removed]

I'm not going to say this is off topic, but I thought the list was for Stirling
type engines.

HOWEVER...this is interesting.

Posted by: "Jan Ridders" riddersjan@...
> I made a concept design for a model IC engine with rotary
> pistons. Not with the (first) intention to make a more
> efficient engine because I can't calculate or judge that;
> probably other experts in this field can do that. My only

Yeah, I can't figure out how to do that either. I think you'd need to get
something running and make a few measurements. You'd also have to post some
dimensions like swept volume, compression ration, etc...

> goal was to design a model with rotary pistons that can be
> made by model builders with moderate mechanical skills and
> tools like me.  In my humble opinion that is not the
> case with most other designs for rotary piston IC engines.
> Most of the time the pistons have very complex geometries
> and/or  (wobbling) movements in  cylinders with
> accordingly complex geometries; very difficult to make for
> model builders and sometimes even for professionals.
> This time I worked the other way around: first making an
> animation based on a silly idea so I could see and
> understand what could happen there, keeping the good things
> and changing the wrong ones until I could not "shoot a hole
> in it" anymore (free translation of a Dutch saying).
> You can see the animation on YouTube:

http://www.youtube.com/watch?v=trbELm2918Q&feature=channel_page

> Same video and short provisional description on my web
> site:

http://heetgasmodelbouw.ridders.nu/
 
http://heetgasmodelbouw.ridders.nu/Webpaginas/pagina_roterende_zuigers/roterende\
_zuigers_frameset.htm

> If anyone can shoot that fatale hole with good arguments
> please tell me that preventing me to put useless efforts in
> making a running prototype.
> Greetings from sunny Holland,

I can't see anything that would keep it from working. It's similiar to some air
tool motors I've seen.

Hi everyone interested,
I made a concept design for a model IC engine with rotary pistons. Not with the
(first) intention to make a more efficient engine because I can't calculate or
judge that; probably other experts in this field can do that. My only goal was
to design a model with rotary pistons that can be made by model builders with
moderate mechanical skills and tools like me.  In my humble opinion that is not
the case with most other designs for rotary piston IC engines. Most of the time
the pistons have very complex geometries and/or  (wobbling) movements in 
cylinders with accordingly complex geometries; very difficult to make for model
builders and sometimes even for professionals.
This time I worked the other way around: first making an animation based on a
silly idea so I could see and understand what could happen there, keeping the
good things and changing the wrong ones until I could not "shoot a hole in it"
anymore (free translation of a Dutch saying).
You can see the animation on YouTube:
http://www.youtube.com/watch?v=trbELm2918Q&feature=channel_page

Same video and short provisional description on my web site:
http://heetgasmodelbouw.ridders.nu/
http://heetgasmodelbouw.ridders.nu/Webpaginas/pagina_roterende_zuigers/roterende\
_zuigers_frameset.htm

If anyone can shoot that fatale hole with good arguments please tell me that
preventing me to put useless efforts in making a running prototype.
Greetings from sunny Holland,
Jan Ridders

Does anyone have any idea of the swept volume ratio of the pistons for a
sterling stove fan. working temp range 250/500 farenheit (125- 250 centigrade)
Cheers

To all interested,
I made a new CAD plan for the Otto 4-stroke engine after implementing some
improvements and simplifications at the same time; see my web site:
http://heetgasmodelbouw.ridders.nu
page:
http://heetgasmodelbouw.ridders.nu/Webpaginas/pagina_otto_viertactmotor/otto_fra\
meset.htm
Click on the button "English" on top of the Dutch text to change over to (my)
English.
The plan is free available via request on my web site, inclusive the plan for
the latest version of the Petrol Vapor Carburetor.
Greetings from Holland,
Jan Ridders

Hi all intersested/involved.
I just finished the final and detailed description of my 2-stroke Hit&Miss
engine:
http://www.youtube.com/watch?v=zQde3pdKdes&feature=channel_page

You can find this description on my web site:
http://heetgasmodelbouw.ridders.nu
The fasted way to navigate to the concerning page is clicking on the text on the
yellow bar at the bottom of the home page. If you click there on the button
"English" on top of the Dutch text it will change to (my) English.
I assume that this description will be very helpfull for all people who got the
plan for this engine and are building this engine or are planning to do that.
I thank my good friend Ernie Weinberg for his useful remarks and comments while
building this engine at the other side of the ocean according to my plan. It
helped me to make the drawing plan full proof and to make this description as a
kind of manual to "solve the exiting puzzles" as Ernie called it.
Ernie's site:
http://www.erniesmodels.com/

Greetings from Holland,
Jan Ridders

--- In warmairmotors@yahoogroups.com, RJM <gandsnut@...> wrote:
>
>
>
> For example, the "3rd world" that lives in squalor and struggles
> to exist will not benefit from one $500K cutting edge Stirling,
> as much as they would from a thousand $500 DIY Stirling engines,
> pumping water, even more importantly, generating electricity.
>
>

see:  http://www.stirlingenergy.com/

Robert:

True.

However, for those of us who could apply a DIY (Do It Yourself)
Stirling to a work application, we don't have the resources for
exotic machining of expensive metals, high-tolerance parts,
liquid helium, etc.

It seems to me that the Stirling engine, "modernized", holds
enormous potential not for the advanced application, but for
the mundane.

For example, the "3rd world" that lives in squalor and struggles
to exist will not benefit from one $500K cutting edge Stirling,
as much as they would from a thousand $500 DIY Stirling engines,
pumping water, even more importantly, generating electricity.

I see this as a huge positive for all nations to pursue
self-sufficiency rather than have vast, lopsided global
emigration, relocation based on standard of living. It is
akin to the "give me a fish/teach me to fish" scenario.
Rather than build shiny desktop toy Stirlings, I'd love to
see non-profit research publish freely accessible plans on
"upsizing" a Stirling to the kilowatt range, using at-hand
materials.

I spoke with local organizations and agencies about the
non-profit research angle, and was surprised to find out
they already knew about the Stirling Renaissance.  But,
none had any interest in starting a non-profit that would
come up with upsized Stirling parameters that would be
within the DIY community's ability.  Apparently, the
economics just "weren't there" for such an untapped
potential.  Or, they were quick to say, "yes, go ahead
with your great idea [as long as you find the funding]".

While toys and models are fine for entertainment, where
would the aviation industry be if the jet engine was
only ever built to be an entertaining model on some table?

Regards,
RJM

==========

There are many Stirlings out there doing real work. The ones that come to
mind for me are used as coolers for liquid Helium in the electro magnets
for medical scanners and photographic (infrared) sensors for satellites.
I used to work in the next lab to this group:
http://www.eng.rl.ac.uk/asd/crg/projects/closed-cycle-coolers/index.html

Robert


On Sun, Jun 21, 2009 at 3:33 AM, RJM <gandsnut@...> wrote:

> Has anybody built or know of an operating Stirling that
> actually does significant work, and is not pre-1900?

> Or, where plans might be for a scaled-up Stirling that
> is not a model?

> Thanks,
> RJM


[Non-text portions of this message have been removed]

There are many Stirlings out there doing real work. The ones that come to
mind for me are used as coolers for liquid Helium in the electro magnets
for medical scanners and photographic (infrared) sensors for satellites.
I used to work in the next lab to this group:
http://www.eng.rl.ac.uk/asd/crg/projects/closed-cycle-coolers/index.html

Robert


On Sun, Jun 21, 2009 at 3:33 AM, RJM <gandsnut@...> wrote:

> Has anybody built or know of an operating Stirling that
> actually does significant work, and is not pre-1900?
>
> Or, where plans might be for a scaled-up Stirling that
> is not a model?
>
> Thanks,
> RJM
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>


--
Robert.Paynter@...
Home:01865 771917
Work:01865 283489
Mob: 07806 527267


[Non-text portions of this message have been removed]

Thanks for the info A3Sigma!

======================

I've seen some large Stirlings  at the Deutsches Museum in Munich, Germany:

http://tinyurl.com/mh3vqn

Follow the links to a 0.3KW generator from 1952 and my favorite, a 4 cylinder
200KW submarine engine developed in 1978 by MAN, AG.  This was a prototype for a
12 cylinder model.

Over the years, I've spent many hours in the library and archives of the
Deutsches Museum, researching clocks and steam engines.  The staff is very
helpful and proficient, and those I've met speak good English.  There's no
charge for their services, only a fee for reproducing printed material.  You
should certainly phone or write to them.  What's on display, at any museum, is
just the tip of the iceberg.

Also couldn't hurt to contact MAN
http://www.man.eu/MAN/en/Unternehmen/
and ask about the submarine engine.

Try technical museums in your area as well.  I'll be visiting the Smithsonian in
Washington, in the next week or so, researching another engine project.  I'll
look around for a Stirling, and let you know.

David Clark in Southern Maryland, USA

[Non-text portions of this message have been removed]

--- In warmairmotors@yahoogroups.com, RJM <gandsnut@...> wrote:
>
> Has anybody built or know of an operating Stirling that
> actually does significant work, and is not pre-1900?
>
> Or, where plans might be for a scaled-up Stirling that
> is not a model?
>
>

I've seen some large Stirlings  at the Deutsches Museum in Munich, Germany:

http://tinyurl.com/mh3vqn

Follow the links to a 0.3KW generator from 1952 and my favorite, a 4 cylinder
200KW submarine engine developed in 1978 by MAN, AG.  This was a prototype for a
12 cylinder model.

Over the years, I've spent many hours in the library and archives of the
Deutsches Museum, researching clocks and steam engines.  The staff is very
helpful and proficient, and those I've met speak good English.  There's no
charge for their services, only a fee for reproducing printed material.  You
should certainly phone or write to them.  What's on display, at any museum, is
just the tip of the iceberg.

Also couldn't hurt to contact MAN
http://www.man.eu/MAN/en/Unternehmen/
and ask about the submarine engine.

Try technical museums in your area as well.  I'll be visiting the Smithsonian in
Washington, in the next week or so, researching another engine project.  I'll
look around for a Stirling, and let you know.

David Clark in Southern Maryland, USA

Has anybody built or know of an operating Stirling that
actually does significant work, and is not pre-1900?

Or, where plans might be for a scaled-up Stirling that
is not a model?

Thanks,
RJM

[Non-text portions of this message have been removed]

Thx for the replies and yes a ratio was what I was looking for.Just a ballpark
figure for a place to start.  I saw one several yrs. ago but can't find it now. 
Thx again

--- On Sat, 6/20/09, stanhbaker <wa4tjj@...> wrote:


From: stanhbaker <wa4tjj@...>
Subject: [warmairmotors] Re: what size?
To: warmairmotors@yahoogroups.com
Date: Saturday, June 20, 2009, 9:30 PM








Whhs1994:

As usual 'It all depends'on the type of engine, etc. There is NO One Size Fits
All type of answer to the O.P.Question.

I have one with a 8" D. displacer cylinder and 3/4" D. power cylinder.
Another engine has a 3/4" D. disp. & 3/8" D. power cylinder.

Volumetric displacement ratios also vary.

Hey! I assume you are building models. So almost anything goes within reason.

Look at the tin can engines at:
http://www.boydhous e.com/stirling/ index.html

Surf links at: NotScar.wik. is for Stirling and Hot Air Engines.

stanhbaker

--- In warmairmotors@ yahoogroups. com, "DSH" <whhs1994@.. .> wrote:
>
> Wow. What a response! If I were a guessing man, I would guess the question
regards percentages and that is what was implied by the word "comparative. "
>
> I don't have the answer but maybe a fair rephrase might ask if there is a
standard size relationship between the cylinders, like 1:0.97 or whatever.
>
> -Whhs1994
















[Non-text portions of this message have been removed]

Wow Stan, if the question pisses you off, you don't really need to answer !

I think the guy is looking for a ratio.

Have Fun
Michale

--- In warmairmotors@yahoogroups.com, "stanhbaker" <wa4tjj@...> wrote:
>
> it should be just the right size.
> Which makes about as much sense as your question!
>
> How big an engine. Provide as much information as possible
> so that a reasonable answer can be provided.  :-)
>
> No one here is a mind reader of clairvoyant!
>
> stanhbaker
>
> --- In warmairmotors@yahoogroups.com, "Joe" <mgbgt2@> wrote:
> >
> > Joe can you tell me on a solar powered heat engine what comparative size
should the displacer cylinder be to the power cylinder? thx.
> >
>

Whhs1994:

As usual 'It all depends'on the type of engine, etc. There is NO One Size Fits
All type of answer to the O.P.Question.

I have one with a 8" D. displacer cylinder and 3/4" D. power cylinder.
Another engine has a 3/4" D. disp. & 3/8" D. power cylinder.

Volumetric displacement ratios also vary.

Hey! I assume you are building models. So almost anything goes within reason.

Look at the tin can engines at:
http://www.boydhouse.com/stirling/index.html

Surf links at:  NotScar.wik.is  for Stirling and Hot Air Engines.

stanhbaker

--- In warmairmotors@yahoogroups.com, "DSH" <whhs1994@...> wrote:
>
> Wow.  What a response!   If I were a guessing man, I would guess the question
regards percentages and that is what was implied by the word "comparative."
>
> I don't have the answer but maybe a fair rephrase might ask if there is a
standard size relationship between the cylinders, like 1:0.97 or whatever.
>
> -Whhs1994

Wow.  What a response!   If I were a guessing man, I would guess the question
regards percentages and that is what was implied by the word "comparative."

I don't have the answer but maybe a fair rephrase might ask if there is a
standard size relationship between the cylinders, like 1:0.97 or whatever.

-Whhs1994

"...Seek first the kingdom of God and his righteousness, and all these things
will be added to you."       -Matthew 6:33

-----Original Message-----
From: "stanhbaker" <wa4tjj@...>

Date: Sat, 20 Jun 2009 18:49:48
To: <warmairmotors@yahoogroups.com>
Subject: [warmairmotors] Re: what size?


it should be just the right size.
Which makes about as much sense as your question!

How big an engine. Provide as much information as possible
so that a reasonable answer can be provided.  :-)

No one here is a mind reader of clairvoyant!

stanhbaker

--- In warmairmotors@yahoogroups.com, "Joe" <mgbgt2@...> wrote:
>
> Joe can you tell me on a solar powered heat engine what comparative size
should the displacer cylinder be to the power cylinder? thx.
>





[Non-text portions of this message have been removed]

it should be just the right size.
Which makes about as much sense as your question!

How big an engine. Provide as much information as possible
so that a reasonable answer can be provided.  :-)

No one here is a mind reader of clairvoyant!

stanhbaker

--- In warmairmotors@yahoogroups.com, "Joe" <mgbgt2@...> wrote:
>
> Joe can you tell me on a solar powered heat engine what comparative size
should the displacer cylinder be to the power cylinder? thx.
>

Joe can you tell me on a solar powered heat engine what comparative size should
the displacer cylinder be to the power cylinder? thx.

This will increase output on Sterling motors.

"The nanodiamonds are quite economical and have already been mass-produced as
lubrication components for automobiles and for use in electronics," added Robert
Lam, a graduate student in Ho's research group and the article's lead author.

http://www.northwestern.edu/newscenter/stories/2008/10/nanodiamond.html

Chris Arnold
www.diamondlube.com

Search for NanoLube on www.youtube.com

Nice clean design.





---------[ Received Mail Content ]----------

  Subject : [warmairmotors] Low Temperature Stirling plan

  Date : Tue, 02 Jun 2009 11:53:08 -0000

  From : "Jan Ridders" <riddersjan@...>

  To : warmairmotors@yahoogroups.com



As a kind of little "in-between" project I made a new version of my earlier LTD
Stirling.You can see it run on the video:



http://www.youtube.com/watch?v=is4ZP6Y9kbs&amp;feature=channel_page



You can read and see all about it on my web site:

http://heetgasmodelbouw.ridders.nu

The fastest way to navigate to the concerning page is clicking on the text on
the yellow bar at the bottom of the home page.



It is significantly more easy-to-make, with a little bit better performance and
it is more "eye-catching" if I may say so.

I know the thing is not new or revolutionary but it is a very suitable model for
beginners I believe. I will be glad to send the plan for it on request via my
web site.

Greetings from sunny Holland,

Jan Ridders









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[Non-text portions of this message have been removed]

As a kind of little "in-between" project I made a new version of my earlier LTD
Stirling.You can see it run on the video:

http://www.youtube.com/watch?v=is4ZP6Y9kbs&feature=channel_page

You can read and see all about it on my web site:
http://heetgasmodelbouw.ridders.nu
The fastest way to navigate to the concerning page is clicking on the text on
the yellow bar at the bottom of the home page.

It is significantly more easy-to-make, with a little bit better performance and
it is more "eye-catching" if I may say so.
I know the thing is not new or revolutionary but it is a very suitable model for
beginners I believe. I will be glad to send the plan for it on request via my
web site.
Greetings from sunny Holland,
Jan Ridders

Hi,

Just found this group, someone got me looking at sterling engines yesterday, and
well one thing leads to another...

I found this design, looks like I could make one with my Taig lathe and CNC
mill. Anyone made a similar one?

http://www.bekkoame.ne.jp/~khirata/english/mk_rot.htm

I can see a few places in the design for improvement, perhaps a teflon wiper on
the rotary section and change the piston/cylinder to another material like
aluminum with a teflon split ring seal?

Also anyone know why the shaft part seems to be made of glass (item 13)

Kristin

Hi all interested,
After I optimized my Hit&Miss 2-stroke engine I now finished the drawing plan
for it which was quite a job if I may say so. This plan is available via request
on my web site:
http://heetgasmodelbouw.ridders.nu
Clik on the text on the yellow bar at the bottom of the Home Page to go to the
concerning page. Then click on the text "drawing plan" on the blue bar on the
right top of that page and follow the instructions.
For those who didn't see this unique engine running click:
http://www.youtube.com/user/HEETGAS?gl=NL&hl=nl
Friendly greetings from sunny Holland,
Jan Ridders