That's a beautiful example of an original "Cycle" engine, one of the best running I've seen, very nicely done. I've been building engines all my life, a few models, then real, a few hundred or more, and now building models of my own design, fifty odd years after my first hand built steam engine. I just can't ever seem to get to the paint part, somehow bronze and iron look right together, especially with some oil needing wiping, weeping, showing it actually runs. Very nice with two running side by side, again, beautiful engineering. I've wanted to build an Atkinson, but haven't gotten to it yet, been considering a geared version, like one of the commercial models. Thanks for the show. John McClain
I've got a copy of the Vincent Gingery book, but have never built the engine. Yesterday, i had the pleasure of seeing one running at the NEMES show in Waltham, MA. The gent who'd built it had also built a four-cylinder engine running an Atkinson cycle. I hear these days that for efficiency reasons, Toyota is switching some engines over to the Atkinson cycle, but with a single-piston per cyclinder. Anyway, thanks for sharing this!
Thanks for the nice comment. The basic plans are from the book by Dave Ginery "How to Build the Atkinson Differential Engine". It is currently running on propane and runs sweet. Thanks
The person that designed this engine had a better understanding of thermodynamics than many engineers today. The slave cylinder is twice the capacity of the power cylinder. This will increase the efficiency way above a modern engine if it was designed using new materials and more sensible design envelope. That is why the car companies are reassessing the Atkinson design now.
Atkinson made 3 engines... this is the first one it's called the "differential" the next is called the "Cycle" and his third engine was his most efficient... most people don't even know about, but it was called the Utilite' which he made in 1893.
on opposed piston engines, fairbanks and morse for example, they are classed as 2 strokes even though each cylinder has 2 pistons. one revolution is 2 strokes, thats why the fairbanks engine is called a 2 stroke as u get power for every 2 strokes of each crank.
Interesting alternative to differential stroke engine, instead of shorter intake stroke, longer expansion power stroke. Would be longer intake, shorter compression, like mechanical supercharging.
Unfortunately there aren't many Brayton model engines. Also original Clerk cycle from 1878 and it would be neat to see a model of Atkinson's last engine of 1893 which he called the Utilite'
Hi Glen, Nice job on the "cycle" engine.. it seems to run much smoother that the differential version... if you are curious about Atkinson's Utilite' engine here is some information about it. www.smokstak.com/forum/showthread.php?t=115633&page=20
A couple of folks on the HMEM forum are building this engine and are having big problems getting it running. I've gone as far as 3D modelling it and we have all concluded there is something wrong in the motion works as presented in the book yielding little to no compression. Being honest did you have to change something in the motion works to get it to run. We'd like to be successful and display this interesting engine too. Thanks
The book is correct. The power stroke is about twice the length of the compression stroke, so, yes the compression is low. I built a wood mock up and just kept playing with it until I got it right. I spent many hours before I was satisfied. I also built an Atkinson Cycle engine that also has variable stroke and it runs fine. ua-cam.com/video/qcF5u1rb8AQ/v-deo.html
@@goodvolts Not sure what you mean by "you kept playing with it" did you change any of the dimensions or positions of the components? The guys on HMEM who I gather are experienced builders independently have come to the conclusion the drawings are somehow incorrect. I have only 3D modeled it and did not build it when I found out there might be problems. There is another video on UA-cam (I think it's Gingery himself) showing the motions and I think I can see that on the intake stroke his engines left piston moves faster to the left than I see in my 3D model. ua-cam.com/video/fgcOYEpKrMY/v-deo.html BTW I too have built the "Cycle engine". It runs fine. davesage.ca/
Not withstanding I might have made a mistake in my 3D model, For sure I have a different relative motion of the two pistons on the power stroke as well. Referring to the Gingery video linked to above. The video shows the power piston (on the right) being almost fully to the right before the left piston begins to follow. In my model the left piston appears to begin following the right piston much sooner. The right piston is perhaps only 3/4 of the way to the right when the left piston begins following it. As I mentioned above a similar action occurs on the intake stroke where the right piston seems to follow too soon which results in both pistons moving together to the left resulting in very low compression. LOL. You'd think it would be easy to adjust my 3D model linkage to achieve the desired results but not so. It's a big issue adjusting all the dependencies of the various pieces. I appreciate you feedback. Thanks
@@davesage9190 Yes, dimensions and positions. Very critical. Trying to build any other way would be difficult. The pistons need to close with a slight gap lining up with the spark plug at the end of the compression/power stroke and close with almost no gap at the end of the exhaust/intake stroke. I am an uneducated, amateur machinist for hobby only. I rely on patience and common sense. The book is correct. My engine building was about 15 years ago and I don't do very much on the machines anymore.
@@goodvolts So to be clear - you made all of the pieces and positions just like in the book and didn't tweak anything from you findings on the wood model? I'm not doubting you. I'd just like to be sure before I make chips. Thanks for your response.
That's a beautiful example of an original "Cycle" engine, one of the best running I've seen, very nicely done. I've been building engines all my life, a few models, then real, a few hundred or more, and now building models of my own design, fifty odd years after my first hand built steam engine. I just can't ever seem to get to the paint part, somehow bronze and iron look right together, especially with some oil needing wiping, weeping, showing it actually runs. Very nice with two running side by side, again, beautiful engineering. I've wanted to build an Atkinson, but haven't gotten to it yet, been considering a geared version, like one of the commercial models. Thanks for the show. John McClain
Great video! Thanks for posting I enjoyed this.
Thanks for posting this! What kind of mind that must have thought of this in the era of ink wells and quill pens! Amazing!
I've got a copy of the Vincent Gingery book, but have never built the engine. Yesterday, i had the pleasure of seeing one running at the NEMES show in Waltham, MA. The gent who'd built it had also built a four-cylinder engine running an Atkinson cycle.
I hear these days that for efficiency reasons, Toyota is switching some engines over to the Atkinson cycle, but with a single-piston per cyclinder.
Anyway, thanks for sharing this!
These are masterpieces of engineering.I congratulate you.
Great video, your opening picture is MY Wall Water Witch , I attached a video made the first day that I got it running on the test stand.
Thanks for the nice comment. The basic plans are from the book by Dave Ginery "How to Build the Atkinson Differential Engine". It is currently running on propane and runs sweet.
Thanks
Beautiful and i really like the headless witte you included
looks like two birds headbutting each other but great model
I like how with the Witte you can see it suck air through the vaporizer, the little cloud that forms.
Absolutely! However, I doubt that it would ever leave the ground.
I believe this design is destined to be a stationary unit.
that engine looks so violent
The person that designed this engine had a better understanding of thermodynamics than many engineers today. The slave cylinder is twice the capacity of the power cylinder. This will increase the efficiency way above a modern engine if it was designed using new materials and more sensible design envelope. That is why the car companies are reassessing the Atkinson design now.
Atkinson made 3 engines... this is the first one it's called the "differential" the next is called the "Cycle" and his third engine was his most efficient... most people don't even know about, but it was called the Utilite' which he made in 1893.
Fantastico, eres mi idolo. Buena coleccion de motores.
Gracias por tu video.
Saludos
on opposed piston engines, fairbanks and morse for example, they are classed as 2 strokes even though each cylinder has 2 pistons.
one revolution is 2 strokes, thats why the fairbanks engine is called a 2 stroke as u get power for every 2 strokes of each crank.
Interesting alternative to differential stroke engine, instead of shorter intake stroke, longer expansion power stroke. Would be longer intake, shorter compression, like mechanical supercharging.
When it started i jumped outta my chair and yelled, WHOA!
Great little machine !
looks like it would be great for one of those paint can shakers at the hardware store! :D
boy oh boy thats nice work :)
That is awesome GF!!!!
JS
Оригинально!игрушка весёленькая.
Wow, I just read that Ford is going to use it in thier plug-in hybrid too!
Unfortunately there aren't many Brayton model engines. Also original Clerk cycle from 1878 and it would be neat to see a model of Atkinson's last engine of 1893 which he called the Utilite'
I built a Cycle engine the following year, here is the link:
ua-cam.com/video/qcF5u1rb8AQ/v-deo.html
Hi Glen, Nice job on the "cycle" engine.. it seems to run much smoother that the differential version... if you are curious about Atkinson's Utilite' engine here is some information about it. www.smokstak.com/forum/showthread.php?t=115633&page=20
A couple of folks on the HMEM forum are building this engine and are having big problems getting it running. I've gone as far as 3D modelling it and we have all concluded there is something wrong in the motion works as presented in the book yielding little to no compression.
Being honest did you have to change something in the motion works to get it to run. We'd like to be successful and display this interesting engine too.
Thanks
The book is correct. The power stroke is about twice the length of the compression stroke, so, yes the compression is low. I built a wood mock up and just kept playing with it until I got it right. I spent many hours before I was satisfied.
I also built an Atkinson Cycle engine that also has variable stroke and it runs fine.
ua-cam.com/video/qcF5u1rb8AQ/v-deo.html
@@goodvolts Not sure what you mean by "you kept playing with it" did you change any of the dimensions or positions of the components? The guys on HMEM who I gather are experienced builders independently have come to the conclusion the drawings are somehow incorrect. I have only 3D modeled it and did not build it when I found out there might be problems. There is another video on UA-cam (I think it's Gingery himself) showing the motions and I think I can see that on the intake stroke his engines left piston moves faster to the left than I see in my 3D model.
ua-cam.com/video/fgcOYEpKrMY/v-deo.html
BTW I too have built the "Cycle engine". It runs fine.
davesage.ca/
Not withstanding I might have made a mistake in my 3D model, For sure I have a different relative motion of the two pistons on the power stroke as well.
Referring to the Gingery video linked to above.
The video shows the power piston (on the right) being almost fully to the right before the left piston begins to follow. In my model the left piston appears to begin following the right piston much sooner. The right piston is perhaps only 3/4 of the way to the right when the left piston begins following it. As I mentioned above a similar action occurs on the intake stroke where the right piston seems to follow too soon which results in both pistons moving together to the left resulting in very low compression.
LOL. You'd think it would be easy to adjust my 3D model linkage to achieve the desired results but not so. It's a big issue adjusting all the dependencies of the various pieces.
I appreciate you feedback.
Thanks
@@davesage9190 Yes, dimensions and positions. Very critical. Trying to build any other way would be difficult. The pistons need to close with a slight gap lining up with the spark plug at the end of the compression/power stroke and close with almost no gap at the end of the exhaust/intake stroke. I am an uneducated, amateur machinist for hobby only. I rely on patience and common sense. The book is correct. My engine building was about 15 years ago and I don't do very much on the machines anymore.
@@goodvolts So to be clear - you made all of the pieces and positions just like in the book and didn't tweak anything from you findings on the wood model?
I'm not doubting you. I'd just like to be sure before I make chips.
Thanks for your response.
very very cool !
is it that design efficient enough to power boat or vehickle ?
this guy sounds as exciting as watching paint dry
And just what have you acheived or contributed, Mr. Absolute anal passage?
Luv the Engine Sir!
i'd rather watch paint dry than look at your stupid comments!
Nice, whats the efficiency of it vs a standard 4 stroke?
+Atanas Tripzter Shitty. Way too much frictional and inertial moment loss.
@@monelfunkawitz3966 This engine was designed to circumnavigate the Otto 4 stroke engine, so energy losses were not relevant.
This is in no way a 4 stroke engine, it's really a version of a 2 stroke opposed-piston engine. Excellent model, but get your descriptions right.
Dave Ginery books rock
where can I buy the plan?
I just decided that I don't want to be a connecting rod...
Gentlemen please
if all 4 strokes happen in one revolution thats a 2 stroke?!!
A lot of weight stopping and starting
Perhaps reciprocating or oscillating.
The mechanical loss is enormous, there is no advantage.
@MrChubs1 stop commenting on other people's videos. You have no tact.
جو
Oddest engine I've seen, and I've seen some odd steam engines.
Это не двигатель, это болезнь какая то, причем не самая хорошая!
Crap