Indeed. Imagine something like the flaps integza created attached to this device instead of the veins. If you could construct a living hinge connection to have them attached to the core ring instead of the housing with the flaps feeding down slots around the housing like the veins do in the Di Pietro. It would resolve the issue with high RPMs overcoming the ability of the springs/elastic to spring back in time for the next revolution.
I talked to Mr. Di Pietro in Melbourne yrs. ago about buying one of his metal AIr Motors, but he was still working on them. He did have some in Carts in use at a market using Air cyclinders, where fumes from other powered Carts was undesirable. The motors were based originally on the Wankel motor which I believe he worked on. - Great stuff Robert.
A fantastic video, Rob! I really like this one! When I saw the rubber band, vane return spring, I could almost hear Joerg Sprave. "Today we use rubber bands as vane return springs. Let me show its features!"
Robert - thanks for carrying on making videos. I appreciate your content & love your style of production. I hope 2025 is, at the very least, better than 2024 for you.
Thank you Rob. ❤ Since Angelo didn't know how this works as a pump and you have that laser cutter device. And a wind turbine that drives an air pump directly able to compress to say 15 bar then any LPG tank can become a battery. Ps the big ones are less than a grand and are safe to 17 bar.
Reminds me of Ralph Sarich (Australian) orbital ICE which did make it into cars but always was limited by the seals. As others have mentioned Integza and he used teflon which makes sense. André
That motor is rather cool. Vane motors seem all the rage lately. I watched 1 by "driving 4 answers" a month ago, then Integza had 1 last week and now this one. For your design rather than cut and superglue rubber bands a couple of recessed loops could be used to hook the 2 ends of an uncut rubber band to.
I like the idea of turning air pressure into rotary motion this way. Put a flywheel on this and a little generator on the flywheel, and you could pump this from simple lantern bellows powered by a back-and-forth wind capture device, even a sapling waving in the wind. A pneumatic system gives you a lot of flexibility -- multiple units off one wind power source, or multiple bellows pumping air into one air engine to spin up the flywheel, and it's all pretty mechanically simple.
Huge fan of the Tesla Turbine, I bought a machined metal 4" version from China for about $100, it runs to extreme RPM on air pressure, it also runs well on steam pressure. I've found the sweet spot is around 80-90psi
I saw it mate - the flaps are a nice idea - but my thought was the wear and tear must be terrible on the flaps and imagine having to replace the entire rotor - but i certainly liked it
Vane motors are primarily used in hydraulics which solves the friction problem and lubricates the motor. You could have 40hp in your hand with a hydraulic vane motor.
Oh My Goodness that's Another Awesome Project for me to Get Started over the Christmas holidays!! WooHoooooo!!!!🎉 Thank you very much Robert for your encouragement, enthusiasm and inspiration!!! I hope you have a have a nice Christmas with your Family around You!! Sending Hugs 🤗💞 Andréa and Critters. .. XxX...
Interesting, but I don't think gluing rubber bands to the surface will last long, possibly why we didn't get a demonstration. Nice concept though, certainly appreciated.
I basically clicked on this vid because of the motor.. I remember seeing Angelo Di Pietro showing off his motor on Beyond 2000 back in the day (i did think it was before 1999 though) ..
Pretty cool to see a 3D printed Di Pietro motor! As far as I can tell, it's the only really successful (non turbine) rotory engine after the Wankel and vain motor. You mention being iffy about the valves, which I definitely agree with! From the images I've seen, it seems like the full production motor has a more open path to the central chamber but it's also longer, which would be lossy as well.
This looks interesting. I just got a elegoo Neptune 4 plus. I’m currently tinkercading a 5 cylinder rotary air engine coming along good. I think I’ll try this one next.
We all know Robert well enough to know he's not just going to play with it, he's going to attempt to 'improve' the design - and he already has some ideas! lol
What an interesting design, and another fantastic video. I wonder if this might inspire a workable internal combustion engine..? Hmm, cycle, lubrication... can't be having exhaust going through the middle unless it's a 2 stroke. Possibly a silly notion, more thought.
Stacking the processes like that is neat, and always blew me away with its impact on transistor production, but have you considered turning half of the processes perpendicular? It’s an air engine in reverse invented around 9 years ago, the lontra blade air compressor (with some arguably easier surfaces to seal), but of course if you reverse air compressors they basically become air engines.
Really cool rob I see what you mean about the values.. They could be more efficiently lain out. On an entirely different note though, have you have of Diamene? I'd love to see your input, ideally homebrew version of it.
That was my thought mate and I have been pondering - i have an idea or two I want to try - I have heard of diamene but i don't do that much chemistry now I have given up the lab I am afraid
would increase the weight, but opposing permanent magnets in an otherwise nonferous assembly would create a durable low-friction resistance for a long time. The body could be made from, say, brass. Or aluminum.
Nah, this is a good low-speed 'turbine', no need to complicated it. Redesign ing for the sudden pressure changes would be a pain, external combustion means no redesign needed. ;)
Your video really inspired me to understand how this engine works so I have printed one. You have alignment marks on the three plates but do the valve and central carriage also need to be aligned with each other? I'm assuming they both need to be glued to the main axle. Should I expect my model to actually run?
Wow, very nice, i aways wondered how this engine works exactly. How did you come across the design Rob, did you just look at photos or something? Cheers
Hi Robert & everyone, I was curious about if you were to modify the Di Pietro Air Engine for water, could it be a more efficient hydroelectric generator than the standard modern-day ones?
@@ThinkingandTinkering It is? Humm. Perhaps it's the principle of internal combustion that's simple as opposed to the implementation. Have you tried the engine? Integza (TH-camr) is actively looking for exactly this kind of solution because he's in competition with another TH-camr.
@ThinkingandTinkering wise words, I was thinking of the 100% more efficient claim, which seems very unlikely, this looks like a variation on a vane pump / compressor
I hope all is well with you sir. I don't see much videos in the workshop anymore, is everything okay? I hope that you have a good Christmas, I know it'll be hard. It was hard (and still is) when my mom passed away in 2021. Just always remember that Jesus Christ Almighty God loves you and that our loved ones would want us to keep on keeping on. 🤗 🤗 🤗 🤗 Merry Christmas and Happy New Year and Jesus Christ Almighty God bless and protect you and your family forever and always in Jesus name Amen
I rate you amongst the best of TH-cam educators. Loved that.
oh wow - cheers mate
I certainly agree
Integza made an interesting design where he printed "flaps" on the rotor vs the veins. I thought it was particularly clever and simple.
I saw it - something similar might work well here
Yep- I was gonna mention that too- it did work better than he expected for the minor changes to the design.
Came here to say the same
yeah true, and my comment didnt make it to win that printer lol
Indeed. Imagine something like the flaps integza created attached to this device instead of the veins. If you could construct a living hinge connection to have them attached to the core ring instead of the housing with the flaps feeding down slots around the housing like the veins do in the Di Pietro.
It would resolve the issue with high RPMs overcoming the ability of the springs/elastic to spring back in time for the next revolution.
I love your discussions of mechanisms, and that you print them out to demonstrate them!
I talked to Mr. Di Pietro in Melbourne yrs. ago about buying one of his metal AIr Motors, but he was still working on them.
He did have some in Carts in use at a market using Air cyclinders, where fumes from other powered Carts was undesirable.
The motors were based originally on the Wankel motor which I believe he worked on. - Great stuff Robert.
A fantastic video, Rob! I really like this one! When I saw the rubber band, vane return spring, I could almost hear Joerg Sprave. "Today we use rubber bands as vane return springs. Let me show its features!"
lol- just a simple and cheap solution mate
Awesome 🎉
I love how I can hear your printer running in the background while you’re demoing what you’re talking about lol
I love your enthusiasm for these projects, it inspires me to work on mine.
awesome - cheers mate
Best content on TH-cam.
wow - cheers mate
Man I have waited for this for years. I can't tell you how long I have been waiting for this
awesome mate - glad you liked it
My condolences regarding the lady in the picture
Thank you very much for that it really is well appreciated
This is an epitome of extraordinary. Therefore it must be put immediately into a museum.
cheers mate
Cool! I was wondering what we missed!
sorry about that mate - for some reason the editing program deleted that clip
@@ThinkingandTinkering Hey, man, it's all good! It only matters because your videos are so awesome! Thanks for making great content!
Robert - thanks for carrying on making videos. I appreciate your content & love your style of production. I hope 2025 is, at the very least, better than 2024 for you.
Thank you mate and I hope it's a good one for you too
I hated school as a kid, if Rob was teaching I wouldn't want to go home.
I agree mate, best teacher ever👍
oh wow - cheers mate
Thank you Robert for the ideas. 👍💪✌
My pleasure!
I like your profile picture!!
@@xtech-projectsreviews1295 I like it as well, it points to my conviction.
Inspiration is a gift.
Thank you.
Wow, thank you
Thank you for this, I was waiting many years for a video on the di pietro motor!!
Glad it was helpful!
Thank you Rob. ❤ Since Angelo didn't know how this works as a pump and you have that laser cutter device. And a wind turbine that drives an air pump directly able to compress to say 15 bar then any LPG tank can become a battery. Ps the big ones are less than a grand and are safe to 17 bar.
that strikes me as a pretty reasonable price mate
@ThinkingandTinkering lpg tank might not be designed for wet air, the condensate will corrode vessel if its metal?
@@ianjackson4571 doubt this design could get that high maybe a bar . How are these any better than a sliding vane pump?
Beautiful work. Thank you 1000 times over
Wow, thank you!
Reminds me of Ralph Sarich (Australian) orbital ICE which did make it into cars but always was limited by the seals. As others have mentioned Integza and he used teflon which makes sense. André
sea;s are always the bane of rotary engines mate - it's probably why the piston has been so predominant for so long
That motor is rather cool. Vane motors seem all the rage lately. I watched 1 by "driving 4 answers" a month ago, then Integza had 1 last week and now this one.
For your design rather than cut and superglue rubber bands a couple of recessed loops could be used to hook the 2 ends of an uncut rubber band to.
nice suggestion mate - cheers
Kudos to Di Pietro for inventing this and to you for demonstrating it.
I see that the rubber-band is a meme now 🙂
lol - what's not to like about a rubber band mate lol
I like the idea of turning air pressure into rotary motion this way. Put a flywheel on this and a little generator on the flywheel, and you could pump this from simple lantern bellows powered by a back-and-forth wind capture device, even a sapling waving in the wind. A pneumatic system gives you a lot of flexibility -- multiple units off one wind power source, or multiple bellows pumping air into one air engine to spin up the flywheel, and it's all pretty mechanically simple.
I like that idea mate cheers
Since central cylinder doesn't have to rotate, I think that vanes, housing and central cylinder could become one part using compliant joints.
you know i was thinking that - i was pondering printing a unit out of TPU of something similar
Huge fan of the Tesla Turbine, I bought a machined metal 4" version from China for about $100, it runs to extreme RPM on air pressure, it also runs well on steam pressure. I've found the sweet spot is around 80-90psi
nice - i have seen them - i am so tempted myself lol
Note they do high speed but not a lot of torque for their size.
Wonderful stuff again Rob.👌
Glad you enjoyed it
such a brilliant design!
Nice Rob, you should check out Integza's solution he just posted on this type of air engine! It doesn't require any rubber bands!
I saw it mate - the flaps are a nice idea - but my thought was the wear and tear must be terrible on the flaps and imagine having to replace the entire rotor - but i certainly liked it
Vane motors are primarily used in hydraulics which solves the friction problem and lubricates the motor. You could have 40hp in your hand with a hydraulic vane motor.
Pretty neat 👏
cheers mate
Oh My Goodness that's Another Awesome Project for me to Get Started over the Christmas holidays!!
WooHoooooo!!!!🎉
Thank you very much Robert for your encouragement, enthusiasm and inspiration!!!
I hope you have a have a nice Christmas with your Family around You!!
Sending Hugs 🤗💞
Andréa and Critters. .. XxX...
I hope you have a great one too Andrea
What a great design, certainly gets you thinking 👍
Interesting, but I don't think gluing rubber bands to the surface will last long, possibly why we didn't get a demonstration. Nice concept though, certainly appreciated.
It certainly does!
no it won't last long you could always put springs in if you want but the main point of the vid was to explore how the engine works
I was thinking to mediate the leakage use felt gaskets.
nice one
I love this channel.
awesome - cheers mate
I basically clicked on this vid because of the motor.. I remember seeing Angelo Di Pietro showing off his motor on Beyond 2000 back in the day (i did think it was before 1999 though) ..
I believe that was the date of his first prototype full engine
Pretty cool to see a 3D printed Di Pietro motor! As far as I can tell, it's the only really successful (non turbine) rotory engine after the Wankel and vain motor. You mention being iffy about the valves, which I definitely agree with! From the images I've seen, it seems like the full production motor has a more open path to the central chamber but it's also longer, which would be lossy as well.
I can see why he did it but i wonder if it is oversimplified?
This looks interesting. I just got a elegoo Neptune 4 plus. I’m currently tinkercading a 5 cylinder rotary air engine coming along good. I think I’ll try this one next.
nice - go for it mate
i really love your dipietro model, please upgrade it!!
I can see an improvement to it. I'm off grid and today (cloudy grey day) I don't have the power to draw it out.
We all know Robert well enough to know he's not just going to play with it, he's going to attempt to 'improve' the design - and he already has some ideas! lol
lol - curses I am an open book lol - the valves worry me - and the vanes i don't like it that they can leak air lol
You should get yourself an AnyCubic Photon M3 Max. Resin printing for better quality, and super high resolution prints. Love your channel!!
I have been thinking of a resin printer for exactly that reason mate
What an interesting design, and another fantastic video.
I wonder if this might inspire a workable internal combustion engine..? Hmm, cycle, lubrication... can't be having exhaust going through the middle unless it's a 2 stroke.
Possibly a silly notion, more thought.
I think it is the other way round mate - it's very similar to a wankle engine
Stacking the processes like that is neat, and always blew me away with its impact on transistor production, but have you considered turning half of the processes perpendicular? It’s an air engine in reverse invented around 9 years ago, the lontra blade air compressor (with some arguably easier surfaces to seal), but of course if you reverse air compressors they basically become air engines.
good design here, maybe with air distributor made of graphite for less friction and better sealing.
Merci beaucoup vraiment c'est bien d'avoir construit toi-même une moteur pneumatique j'ai déjà utilisé mais sous forme de jouet😅😅😅
The Fred dibnha of gadgets is rob. Top guy big fan from Scotland
lol- cheers mate
100% more efficient than the competition is still kind of a low bar given how inefficient those competitors are.
Danfoss' vane motors have an overall efficiency of about 86% apparent;y - doesn't seem that bad to me
I really wanted to see you slap a drill on it :P
looks like a vgt on a turbo awesome
This is top!
cheers mate
Really cool rob
I see what you mean about the values.. They could be more efficiently lain out.
On an entirely different note though, have you have of Diamene? I'd love to see your input, ideally homebrew version of it.
That was my thought mate and I have been pondering - i have an idea or two I want to try - I have heard of diamene but i don't do that much chemistry now I have given up the lab I am afraid
I cant come up with a clever comment, so I'll support you by typing Ni !
I just appreciate hearing from you mate - cheers and all the best
would increase the weight, but opposing permanent magnets in an otherwise nonferous assembly would create a durable low-friction resistance for a long time. The body could be made from, say, brass. Or aluminum.
Might make a good 2 stroke engine
yes it would!
Nah, this is a good low-speed 'turbine', no need to complicated it. Redesign ing for the sudden pressure changes would be a pain, external combustion means no redesign needed. ;)
Are there any rotary engines that actually deal with the sealing issues?
certainly not as successfully as they would wish
Your video really inspired me to understand how this engine works so I have printed one. You have alignment marks on the three plates but do the valve and central carriage also need to be aligned with each other? I'm assuming they both need to be glued to the main axle. Should I expect my model to actually run?
coincidentally posted after the integza video.
yes it was
I remember you had a wind catcher that funneled air down from any direction. Could that feed into this device to generate electricity?
In a sense i suppose it could but not directly ithink
Also, the Intezga flap approach would pretty much replace all of this with a single part, the rotor. Wouldn't it?
yes it would
Robert: Your explanation is focused and concrete. Thank you!
I am surprised I haven't subbed till this moment.
cheers mate and thank you for subscribing
Wow, very nice, i aways wondered how this engine works exactly. How did you come across the design Rob, did you just look at photos or something?
Cheers
I looked at the patents mate
So how do you test the di pietro vs the vane motor? Just use two soda bottles pressurized to the same pressure and see which engine runs longer?
I would think probably a prony brake to measure static and dynamic torque - graph them and extrapolate the curves - that would be my guess
Hi Robert & everyone, I was curious about if you were to modify the Di Pietro Air Engine for water, could it be a more efficient hydroelectric generator than the standard modern-day ones?
We've got a three way competition with integra, stanton and robert. we'll be going transatlantic with power from two coke bottles in no time.
I have seen both Tom's and Intergza's videos - I am not sure I am in competition - but it is fun lol
What if you made a three flap rotor and fed it with multiple inputs? Shouldn't that increase torque?
generally isn't it the more flaps the more torque?
Looks like a sealing nightmare. Would it work with an incompressible working fluid, like an oil?
Did you see integza’s flapper air engine?
yes i did
Something spiral or vortex in the guts might get her going faster.
give it a go mate
😊
cheers mate
Essa tecnologia ja e velha, se quiser revolucionar tem que tentar novos projetos de motor elétrico, os motores elétricos e o futuro 👍
Its so clever, it gives me a headache.
Complicáted😂
really?
This seems rather complicated.
tbh it's less complicated than an internal combustion engine
@@ThinkingandTinkering It is? Humm. Perhaps it's the principle of internal combustion that's simple as opposed to the implementation. Have you tried the engine? Integza (TH-camr) is actively looking for exactly this kind of solution because he's in competition with another TH-camr.
In the end you are up against physics, compression results in heat losses.there are hundreds of designs.
that would be true of everything mate - you are always up against physics lol
@ThinkingandTinkering wise words, I was thinking of the 100% more efficient claim, which seems very unlikely, this looks like a variation on a vane pump / compressor
It looks very much like the wankle engine from the sixties. Obviously not engineered to the same tight tolerances but, very much the same idea.
Di Pietro worked on the Wankel engine - so i guess no surprises there lol - cheers mate
Not meaning to be rude but Wankel comes to mind.
lol - Di Pietro worked on he wankel engine - and he says it was an inspiration to him
Get a proper microphone.
It is really nice to se a DIY vesion of this, some how "mythical" engine, but did I mis the test ?😊
there was no test mate - this is a demo model to get the idea of how it works - it needs some upgrades before a test run can be made
the informations are amazing. could you please make a video about the wind generator you make using speaker? best regards
cheers mate and sure
@@ThinkingandTinkering thanks a lot.
I hope all is well with you sir. I don't see much videos in the workshop anymore, is everything okay? I hope that you have a good Christmas, I know it'll be hard. It was hard (and still is) when my mom passed away in 2021. Just always remember that Jesus Christ Almighty God loves you and that our loved ones would want us to keep on keeping on. 🤗 🤗 🤗 🤗
Merry Christmas and Happy New Year and Jesus Christ Almighty God bless and protect you and your family forever and always in Jesus name Amen
Yes things have changed with the passing of my wife - Have a great Christmas and God bless you too mate