THE LIQUID PISTON ENGINE 

I remember seeing a lot of very sales-pitchy videos from these guys like 10-ish years ago. Cool to see that they're still around, and cool to see that they're a more down-to-earth bunch of folks than those videos back then let on.

“Physicists tend to dream of theoretical solutions but the people who actually solve the problems are engineers.” 2:37 Reminds me of a quote I love… “In theory, there’s no difference between theory and practice but in practice, there is.” 👍🏼

I volunteered with a museum who has a Humphrey pump. An absolute amazing machine. Our pump was primarily used to pump water to irrigate the surrounding districts at the time before electricity took over. It had the potential to pump out a mega litre per hour.

It makes such a cool sound, glad you got to play with one

Would be wild to see a bigger version of one of these motors in a race bike

I'd love to see you have a go at making your own electrical motors. I imagine you could come up with something quite interesting and educational! edit: tomatoes are disgusting.

Its always a good day when we get to see Integza making things

It's definitely about the journey! Doesn't matter what the subject is, it's your approach to the problem, the attitude towards finding a solution, and fun you have doing it that bring me back for the next video.

How about you try to build different types of engines and see how much electricity you can generate / how efficient they are. Great stuff as usual!

I've been waiting for a while for this company to actually mount the motor on something to give a more practical demonstration of what it can do, and wouldn't ya know it, they finally did it. Thanks Integza

Holy cow, the engine itself was cool and blew me away, the fact it can run on moonshine was exhilarating!

Id like to see you pair up a 3 phase generator to a liquid piston engine and test it for output.

Just a bit worrying hearing “investing” and “15% discount” in the same sentence

Seeing that your area of interest is predominantly in propulsion methods, I would quite like to see you mount some kind of lightweight air breathing engine to an airframe that would allow it to fly under its own propulsion, maybe something like the old V1s?

Here's an idea for a future video - make a centrifuge for filtering heavier particles from a fluid - for example dirt from oil, or resin particles from alcohol (that are most often used in resin 3D printing). The main part is something like a cooking pot, but with additional lip on the top rim. That lip could be something like 2 or 3 cm, and when spinning it would trap fluid on the inner walls in the volume closed by that lip. (the UP for the things in the centrifuge would effectively be towards the rotation axis). When you keep pouring (dirty) fluid inside it would fill that wall-lip enclosed volume, until it starts overflowing over the top lip (as the bottom is mostly** solid) Since the overflowing liquid will fly away horizontally not being stopped by anything else, there should be external housing - That ext. housing can be very simple as it's fixed, and the only special thing is on its bottom. The bottom should be separated in 3 areas: - inner-most: for passing the axis of the motor spinning the centrifuge (that could be dedicated motor, or a Dremel or whatever you find appropriate). - mid-area, separated by two vertical walls to prevent the fluid overflowing in the inner- or outer-most areas. That's where the remaining dirty fluid would drain when the centrifuge is stopped, thru the holes on the bottom of the "cooking pot". - and the outer-area, which would collect the (clean) fluid overflowing above the "cooking pot" top lip. The mid- and outer areas need one or more drain holes that lead to separate containers for the clean and remaining dirty fluids. The inner-most the hole for the motor's axis, isn't strictly necessary to be on the bottom, but it would be more convenient as the pouring of the dirty fluid would happen from the top. Bonus: if you pour the dirty fluid from the top straight down some of it might immediately drain thru the dirty fluid holes (before the centrifugal force pull it to the "pot" walls), or it might fly directly to the area near the overflow lip, and not have enough time in the centrifuge to let its heavier particulates to settle on the "pot" walls. To prevent that it would be idea to add a part that would serve as a channels for the dirty fluid, and at the same time as an umbrella for the dirty-fluid drain holes on the bottom of the "pot". It should be with at least two symmetrical arms (that should be plenty, but in any case it should be perfectly symmetrical to avoid introducing vibrations during high speed rotations). That part should be attachable to the center of the spinning "pot", at about the place there the motor's axis attaches, and should of course spin with the centrifuge "pot" in order to guide the dirty fluid towards the wall and bottom of the "pot". This way the newly introduced dirty fluid would have the longest path to go until it reaches the overflow lip, and thus will provide more time for the dirt particles to settle on the walls, and displace the already cleaned fluid over the lip. ** "bottom is mostly solid" - means that in a "cooking pot" solid bottom there should be few holes near the central rotation axis, which will allow the remaining (dirty) fluid to be drained thru these holes in a separate container, for future filtering. If you'd like you can add a lid over the fixed housing to prevent any fluid spraying around. Also the "pot" bottom could be a bit concave s o to guide easier the remaining dirty fluid to the drain holes on the bottom when the centrifuge is turned off. At rough calcs ~7cm radius spinning centrifuge "pot" at ~11300 RPM would produce ~10,000 g-force! So it doesn't need to be large - radius increases g-force linearly, but RPM increase g-force exponentially, and given that most motors can spin it around 6,000~10,000 (typical angle-grinders), or even near 35,000 for Dremels, the real limiting factor would be the spinning "pot" strength (of it's own weight + the operating fluid below the overflow lip) at the given RPM. And of course it would work fine at much lower RPM, just with lower effective g-force.

Stack 2 or 3 of those and you've got your Go-Kart engine! Just have to mind the timing to get best torque. Glad to see a working prototype. I hope they're successful.

Would love to see this in a model plane, how much more flight time you'd get if it's smaller and lighter

Holy, this is awesome! It's companies like this that need support and adoption to move things forward. This isn't some on paper only idea the fact there is running testable engines and their confidence in them to let you mount it, run vodka through it and just go nuts is some levels of transparency I've never seen! Please do a follow up with theses guys at a later time. As usual learned something new and had a lot of fun watching it. Keep up the great work.

Well, I don't know about the performance aspects...but the sound characteristics are fantastic! They sound awesome.

I have always been interested in seeing how a Stirling engine would work if you use a manual CVT gearbox as a throttle control, so there's an idea for you to try.

i would be interested to see how the power stacks up against a rotaty engine of the same size

It's been great watching how your channel has grown, going from doing sketchy 3d printed engines to here. And as always, this video was a great watch. Looking forward to the next one

I just love the way it sounds, almost like a combination of a two-stroke inline twin and two-stroke inline three.

I love how widespread and interesting your videos can be and how well you explain the concepts of the designs of machines you build

_"It's basically a hot air engine that uses a literal liquid piston... But is it useful in real life?"_ also _"This video was brought to you by Liquid Piston, a company"_

Hey Integza, I had a video idea for you. I saw an article the other day about a 3d printed peristaltic pump, and I thought it would be fun to see you replicate that and see what you can do with the ability to move fluids around!

I'm 58, lived on this planet most of my life, still looking forward to leaving, although once in awhile, I watch something, read something, see something, hear something, touch something, taste something, stand on something, pick up something and these things make me want to stay a little longer. Still trying to figure out why. Strange Planet you have here. Like I say "Nice place to visit, but I sure would not want to live there" Still............I am enjoying my visit, maybe we have coffee someday?

What a great opportunity for you to meet with the team and learn so much directly! It’s been great watching the channel grow!

Lost wax casting would be a really cool thing to see you try! I do it for my job and it's a very unique process.

I have a few ideas for you to investigate. I saw a prototype engine in a dirt bike magazine some time in the early 1990's that combined parts of an 80cc 4 stroke engine with an 80 cc 2 stroke engine that resulted in an engine that was half the weight with twice the horse power. The article claimed that the new tech could be used for cars as well but I never saw any mention of this tech since the article. The ideas were simple. They used 2 80 cc engines of the same make, put the 4 stroke cylinder and valves on the 2 stroke engine block turned so that the intake was on the front of the engine. They ran a pipe from the cylinder intake to the engine body where they had a reed valve that allowed the movement of the piston to build pressure in the tube up to 15 psi till the valve opened for the intake stroke. A reverse camshaft was the only part that had to be made special since the cylinder was mounted with the intake in front / exhaust in the back. The carburetor ( I have no problem saying it ) was mounted on the engine body with another reed valve so fuel air could go in but not out and allow it to lube the engine and pressurize the tube previously mentioned. Integza... Contact me and I will even draw / email a schematic for you AND I have another almost lost tech idea you may like.

You should do a video about two-stroke engines. Especially the expansion chamber portion. It seems right up your alley!

Could you try build an upgrade to an EDF that feeds it compressed air (like a jet engine without combustion.) It could be a pretty intresting thing to try.

RAMJET ENGINE PLEASEEEEEEE!!! I don't care if I win or not. I just want Integza to read this comment! I've been around your channel for a couple of years. ik how much you love engines and how you progressively got better at making them. This could be a hard hobbyist model and you may fail.. but hey, what better way is there to live? I wait every month just to hear those 3 words haha. "Tomatoes are disgusting!"

I'm so impressed by this liquid-piston engine! It's amazing to see how you've been able to use vodka as a fuel source. I've always thought that it was a waste to use vodka for getting people drunk, when it could be used for something so much more productive, like transportation. I'm really excited to see what you do next. I think there's a lot of potential for liquid piston engines to revolutionize the way we travel.

make a plane with the LIQUID PISTON ENGINE

Wow 😁 its exhilarating to see an engine working with just basic principles of fluid mechanics.. it's very awesome to watch ...

Liquid piston combustion to drive the permanganate H2O2 reaction rather than pushing a syringe with your hand would be pretty cool. Kind of like driving a bigger thrust with a minor combustion, like when you used the linear PDE to start the RDE!

You could make an motor which is very powerful and quite, it would benefit the environment a lot no air pollution or sound pollution, it would be great.

The Wenkel rotary engine is amazing but problematic for daily use driving. It recently got a new life in a Toyota as a range extender. Exciting and fun stuff!

Video Idea: you sould build a nitinol engine that if you would put in warm water than it would run!!!

Man I missed this channel and I’m glad it’s back. This is one of the best sponsored videos because it actually relates to the content you normally produce.

Make your 3D print in foam and use it as a mold to create a negative mold in concrete, then melt the foam with some molten metal to make your rocket engine or combustion engine more resilient.

The problem with using liquid based Piston is that liquid tend to change its behavior in different states. Like under to much pressure it can change into a Gas or superfluid or other way around. And since it can change it state it will be able to find was out of the Chamber even if its the smallest crack or similar. Its a good idea in General to have one less mechanical Part but this could be only useful for small engines. Everything higher will just make alot more problems than solving some.

I like the idea of a rotary-powered generator. It would be nice to see the engine perform useful work at lower rpm's.

Rotary engines are amazing, lightweight,great power in compact size and sounds better than anything else,i do really hope some design fix all the problems and start having all type of vehicle with rotary...

Been following you for years and your content is always so informative and entertaining - it saves me from the crap on youtube shorts

Hey, love your channel! I'd be thrilled if you took on a project involving the Free-Piston Engine, a truly exotic design. It's a fascinating approach to internal combustion with no conventional crankshaft, and it's a design that holds significant potential for hybrid electric vehicles. I think your viewers would appreciate the uniqueness of this concept, and I'm certain you could make some interesting modifications to boost its efficiency and practicality. Looking forward to seeing what you come up with next!

That seems like some really cool tech! Hope the company gets more successful

You should do a video on ducted fuel injection for Diesel engines. It has the potential to make an already efficient engine 10x more efficient. A lot of truck companies are researching it and in theory it can be retrofitted to any diesel car.

Well A: it honestly looks like you had an absolute blast doing this and made me wanna do what you do. You just hung out with some engineers all day and built stuff. Awesome! B: see how fast you can make it go!

I love your propulsion videos! You should try working with NileRed to build a nitric acid rocket engine. With any luck, the tomatoes could catch fire spontaneously!

This reminds me of how a pop-pop boat works, the difference being that the liquid isn't fully enclosed.

The fact that is can run on vodka is both surprising and actually quite promising considering how easy it is to make.

With a bit of tuning, even a normal piston engine can run on alcohol. It runs a lot hotter and takes a good bit of tuning, but it sure works!

Video idea: using a bigger version of one of your compressed air engines (preferably the triangle one) power a normal bicycle turning it into a compressed air engine powered bicycle. Not sure if this is possible but hopefully it is Thank you for another amazing video @integza

It is good to see that people still have a spirit of adventure, in Australian culture, you are my type of Nerd. It is a pity that my country has let most of it’s brains go to other countries.

Still wait8ng on my printer!?!?!?!?!?!?

You should do a video comparing adding scale to that engine vs putting multiple of the chambers in series like you see with wenkels 2 or 3 or more rotor engines. It'd be cool to see which is more efficient use of space/weight for the power output.

The Mazda 787b had an inverted rotary like that, and the way the go kart sounds has a lot of similarity to how that 787b sounded. That's awesome that a little kart has that much acoustic presence about it.

I don’t know if you have worked with cannons before but I really do think they are a cool concept. Maybe you could try to make it steam powered or air powered. Heck, you could maybe use the elephant toothpaste reaction even. This could also be a cool and effective way to destroy tomatoes lol

Itd be very interesting to see you try to incorporate some of the past designs like the jet engines into something more like this. To see the concept is very cool but see it working like with the scooter is just taking it a step further! Im sure there is someone in your area who would join in on projects like that.

ngl, it sounds so sick, like an actual superbike.

It would be interesting if you could build a bigger version on this engine to incorporate it in a bigger project. You could also have multiple ones if having one big engine isn't possible.

Such a high quality video. easily worth the wait

If this is small and lightweight it could be a godsend for general aviation, as a new powersource for light aircraft has not been had in 80 years!

I want to see more about your liquid piston engine. Also, I fail to see how this rotary engine uses a liquid piston. Did they just adopt the company name and give up on developing the namesake product?

now imagine this with more and bigger rotors in a motorcycle, that would be insane, especially the sound i think

I always wanted to see a Recreation of the Chrysler Turbine engine, I mean , Dude! A frigging weird reaction turbine on a car. Those engines never took off because of the high consumption and noise but were reliable and smooth.

I think it's time for you to make a rocket propelled RC submarine, extra points for an explosive warhead and some underwater tomatoes!

The thing that's absolutely fascinating to me about the Humphrey Pump is that it ran around 20% fuel efficiency. Using a 70% conversion for a simple hydro turbine that's less concerned with particulate matter like a segner turbine would leave you around 14% thermal efficiency. Certainly nothing that'll reinvent power production as an industry but nevertheless interesting for off-grid or remote purposes. That'd be an incredibly simple machine made out of very simple components with little downtime.

I have heard rumor of they have learned how to make a superconductor that is stable and atmospheric pressure and temperature. They're said to haveing done this by combining a mixture of the carbons off of lead and copper. I think your next video should be on can you make this superconductor material

I would love to see you do a video on a magneto-plasma dynamic thruster, it is a really interesting kind of propulsion system.

Hello Integza! I've seen your ion thrusters and I think it would be a great idea to upgrade and install them to a skateboard or to a rc boat. I am very curious to see how this engine technology can do against other engine types that you've built by using them to a practical demonstration and compare their thrust level.

It would be awesome if you try to build a ramjet engine. I think it's possible considering you have all the necessary proprietary knowledge from building all sorts of other jet engines. Great video as always!

Love your videos!!! Always make my day! You should try making a 3d printed version of a Hydrogen engine! (low fuel consumption of, be careful) and SMASH THOSE TOMATOES

That is incredibly cool! I am happy to see someone try something new. Perhaps this will be in future cars as an alternative to battery electric. Of course, there are lots of other uses for this as you pointed out. Generators and things that don't necessarily need to be on a moving vehicle.

Yokisamiw: the way of the tomatoeless is a t-shirt, cult, martial art, and any number of things I would buy and buy into

Yeah... im not investing in a IC company

Too bad you had to resort to a click bait title. Seeing how you didn't make anything. Thank you for helping me reduce my subscription list.

I love engineers and scientists who think outside the box and don't conform to what others consider to be normal

This is revolutionary. I want to know why we keep things mostly 2D with engine design. Is there a way to make a spherical combustion chamber that spins a propeller shaped piston, and maybe it's more of a knot of trumpets in its shape with the engine. Why not make 3D pistons for an engine to get as closer to 100% efficiency. For so long we are trying to fit a 3D explosion into a round hole. And maybe AI can help with this. I picture an ignition event in a metal sphere of carefully thought out propellers that possibly spin in more than one direction to give ultimate power. Maybe not mega or elite power, but ultimate power in a step towards 100% efficiency.

Gary is a very good at engineering so don’t disrespect his work note for Gary from engineer to engineer don’t let anyone disrespect your work because they just don’t understand

It sounds like a Honda Beat! Imagine making it 660cc?!

Huh. There are a couple of Humphrey Pumps in Cobdogla, South Australia. From the SA Water website: "The Humphrey pumps supplied irrigation water, mainly to the areas around Barmera, Loveday and Cobdogla, for nearly 40 years from 1927 until 1965. These historical wonders are part of the Cobdogla Irrigation and Steam Museum in the Riverland. The largest single cylinder engine in the world, the Cobdogla Humphrey pumps were manufactured in 1920 in Scotland and installed in Cobdogla between 1923 and 1925. They were the only two of their kind installed in the southern hemisphere. The pumps ran on gas produced by a wood-fuelled plant, the most efficient use of available fuel at the time, and are part of our long history of innovation to enable economic growth in South Australia."

you should try and collab with ElectroBoom. Your combined chaotic energy should result in some amazing projects

I'm a mechanical engineer student, and your videosss my mannn inspires me more to master & learn my majorrr, thank you!

Video idea, build an RC car powered by a smaller version of this engine, which runs on ethanol made from fermented tomatoes.

I would love to see this engine as a diesel range extender for the electric bikes currently being used by the military. You could shave a non-trivial amount of weight from the battery and use the airflow to pump heat out of the motor.

i had no idea they had fully functioning liquidpiston engines. here's to hoping they live up to the hype!

All I want in the world is to hear six of those little guys in a row. One sounds amazing, two would be phenomenal.. but all good cars have inline six engines, and I want six weird triangle-oval things all lined up. Maybe even under boost 😎

Man, i gotta say that little thing screams! Imagine a 2 door coupe powered by a full sized one of these with a turbocharger. It would sound so good!

It sounds like a triple cylinder 2 stroke! It just sounds really cool!

Oooh man you just inspired my career .I liked the jet engine with no moving parts

Its looks like a rotary and sounds cool too,would love a comparison on how they perform

Amazing video! Here’s wishing you get to a million soon! You really deserve it! Thankyou for putting a smile on my face, and learnin’ me sumfink!

This is the kind of videos I love watching at 3:40 am

How about a rocket propelled boat with wings that could fly as a plane for your next project? Thanks

Maybe a liquid piston, rotor, and piston engine crank connected, if at all possible. Maybe change the inner rotor gearing so the crank spins slightly slower, more torque that way possibly also.

Dude...First off, your accent is fine. The way you say "carburator" sounds way cooler than standard American. I visit your videos because you're engaging and smart. I'm glad you didn't just decide to write books instead of this. Keep 'em coming!

That sound is awesome for a tiny engine. It isn't whiny like a chain saw, sounds like rally car almost.