Yeah my jamjar jet exploded as a kid too... don't tell mum. XD

"I didn't learn the first time" As a man who has already lost an eye in a work accident, I feel the need to point this out. SAFETY GLASSES. I learnt the first time.

This is a special kind of humor, scientific fun and morbid danger; my kind of stuff!

"I'm Portuguese, and he is a fake russian" Shots fired!

First time seeing this fella's vids. They're Pretty good. He's like a PG ColinFurze.

Great work on this video! I think you had a chance of success with the Tesla valve intake, but it was way too small for a chamber that size. Would have needed 5-6 of them at least to feed air fast enough.

The "JarJet" needs a larger hole. On the extreme end, a completely open jar will burn continuously, but the flame will "flutter" as the air is (partially) evacuated by the flame and then rushes back in to fill the created vacuum. Burning a candle in a short but narrow tube can create the same flutter effect. As the open end of the jar decreases in size, the gas-air mixture is evacuated more energetically. The "flutter" will increase in frequency and become louder. At some point, as the hole size is decreased and depending on the volume of the gas mixture in the jar, the explosive ignition ejects ALL the air and gas inside, including the heat (flame) necessary to keep the process going. The highest fuel to thrust ratio is at that point just before the explosion extinguishes the process. One of the design considerations of a model pulse jet is the length of the exhaust tube. It not only controls the frequency of pulse, it also retains a portion of the flame from the previous pulse that travels back up the tube to the combustion chamber for the next ignition. The best pulse jet is one that pulses at a double harmonic of the tube length. The longer the engine runs, the more the ignition heat is retained and the engine runs more reliably. By it's manufacturing nature, a plastic pulse jet will self-destruct as it stabilizes because the stability of the jet depends on a buildup of heat. P.S. The reed valves in a model pulse jet are to prevent the back flow of air, not so much the fuel. The Tesla fluid valve for the fuel is mostly unnecessary since the fuel is under pressure anyway.

First time watching you. You’re like a funnier lower budget Bill Nye the Science Guy.

My English is also bad - this is why I understand you so good

I forgot that i even subbed to this channel. But i am not disappointed.

If you use the 3D printers to just create a scaffold for a plaster version, or something of similar heat resistance, I think it would work perfectly without being destroyed. Also, you could take calculations on the volume of the ignition area, the time it takes for each unit of that volume to fully ignite, and then program the spark to go off in those intervals, you might be able to optimize the whole setup to ignite the first time every time.

Pulse jet engines only starts running right when in temperatures well beyond the melting point of that plastic, lol!

The amount of jokes that can be taken multiple ways is amazing.

Nicely done and well produced! You mix the science with humor not unlike ElectoBoom. I predict your channel will grow rapidly, best of luck.

I just discovered your channel and I love it ! You make simple experiments just to see by yourself: it's a way of life. I like to beleive that if somebody already managed to do something I can do it too, nothing is impossible !

The way he said pulse at 1:11 was so satisfying

"I placed it inside the onion" i giggled a little too hard at that one

New name for the resin printer : the resinator

This is like the 4th or 5th video of yours that has appeared in my feed. Damn dude, you're a talented storyteller and your content is fantastic.

I respect your skill in animation, crafting and CAD. Really a maker.

ultimate conspiracy theory: these sponsorships are all real.

An experiment like this needs to be done outside. Let’s go try it inside

This is the first video of yours I've seen - brilliant! That was an easy subscribe decision :D

Hey! That's our pulse jet at 6.25! We bought it from the guys at K9T and now use it in our STEM events at schools/festivals etc. A nice surprise to see it. Great channel by the way.

for longer use of the plastic parts you could print in a water cooling system in the wall of the part

This channel deserves a whole lot more subs. Love how you present everything.

Actually a great idea to use printer to make different shapes and configurations to test out before you use metal! Well done mate ! 👍🏻

Right about when he blew the lid off, I started having flashbacks involving a brief foray into trying to build an alcohol torch with a yoohoo bottle

"I'm Portuguese and he's a fake Russian" take my sub good sir

o my god, an fps Russia reference in 2019?

just an advice, for no melting the equipment: you could add in internal walls some small pins in order to put a thin linner of mortar like is used in oil furnace. Good job.

Love your stuff, man. I'm no scientist, but am a plumber who works a lot with different kinds of torches. I think their design is Very similar to what you are trying to do, except very different applications. You said it yourself, you need a good mixture of air and fuel. You cannot simply scale things down and expect them to work the same way. You need to make adjustments to the gas pressure as well air. Also check where your gas inlet is, in proportion to where your oxygen gets mixed in. Also, Youd be surprised how little of a gas hole you really. Just need more pressure.

I've built that same exact pulse jet years ago out of sheet metal. I rolled it and welded it. I used a regular propane tank for a bbq and copper tubing for the fuel line. I welded nut on the end of it and screwed in a spark plug. To run the spark plug I wired it to my car. I started my car and it was running minus the one cylinder. I used an air compressor like you to force air through it to get it started. It started and ran fine. It was so loud all my neighbors came out to see what was going on. I'm sorry your experiment didn't work. You should keep trying. I know for a fact that design works well.

It must take an enormous amount of work to make these videos. Just doing the editing would take me forever. Great work.

Gloves when working with "dangerous" Methanol, but no safety glasses when igniting stuff... Respect XD

Great project! The turn on (charge time) for the ignition coil can be made much shorter. 1000 ms is like eternity and only creates heat in the coil. Try 20 ms charge time.

I found this Channel today and was like dam 26 min vid, after watching I couldn't believe how funny and awesome this guy is, amazing will be sharing

You dont understand how long I have been waiting to see a 3D printed pulsejet, interesting! I always thought that as soon as the plastic hit the flames it would melt but I guess it dosent have enough time to melt looking at the speed of the pulse. Nice one, like always I am blown away by your 3D printed counterparts of Nikolas work!

I hope you keep doing videos. You have the spirit of Tesla in your heart. I find you entertaining. I'm sharing you alot lately.

i think i have rewatched all your content at least 2 times each if not more! thank you!!

19:41 I placed it inside the onion. WHYYYY

"It's just cool and the right shape to shove up...... put on my night stand.". I had a hard time to stop laughing!

I like it when the air compressor kicks in and for a moment it sounds like your jet was running

I know you like building stuff, so, next time you need a high voltage capacitor, you could build a Leyden jar. They're actually really easy to make.

"This is Melinha, my first 3d printer!" The best quote of the millenium!

You need more gas!! I build a pulsejet years ago. I couldn't get it running, similar to yours. Then I got rid of the gas regulator, and it took off. You need quite a bit of gas pressure, these things are thirsty.

Perfect mix of lunacy and education. Great video and I subscribed.

Colin Furze makes building pulse jets look easy

I love engineering. And I can feel those little triumphant moments when stuff works. It would be a good time to tackle a project with you on the team.

“UltraViolent,” the 3D resin printer.

I really liked how some of your jar jets just made a "Peeewwwweeep!" sound XD

Just downloaded all the files for the pulse jet3d printing now, loved the video👍👍

i only just found yuor channel this week and id like to say im blown away with how much effort you put into explaining things, animation and your comedy is fantastic too! Just want to say keep doing what your doing because your work is amazing and verry educational !

I like your accent. It’s like Borat is teaching me science..... VERY NICE

I love the Colin Furze reference lol. He's a modern day genius. Absolutely great video man! Keep up the amazing work!

You deserve way more subscribers! I'm sure you'll hit a million if you keep the uploads up.

Frickin' hilarious! I stumbled upon your channel and can't stop laughing - well done! One note on the pulse jet with plaster liner: for a uniform coating try a slip-cast method. I have done this using clay as the slip material and plaster as the mold. In your case you may be able to chill the 3D printed part from the outside(cold water bath); let it sit for a period of time and then pour the slip out... Could be fun, no?

I think the problem in your red pulse jet is that the gas pressure is not high enough, therefore it cannot sustain a continuous burst. (I don't know anything about pulse jets, but seems a good idea to try, I mean, what coulg possibly go wrong...)

I think a major factor in the struggle to start the engines is that after a few failures, you need to blow into the end, just to reset your mixture. If you don't do that, the engine will flame out on ignition due to a lack of an oxidizer.

Man's whole UKposts career is held together by 3D printer filament.

This guy has a "self-punching gaming helmet". Genius.

My good sir, in recent few years of using UKposts in encyclopaedic fashion, this is the first time i've seen a video by you. And you're doing it SO well, pulling 250% to make up for all the lackluster/polarized data|comedy videos that others push out. Excellent integration of data, humor, confidence, diagrams, project, and genuine self. Subscribed, looking forward to more! (/catching up on your published videos). Good day.

I think metal works better because it heat up and that helps with combustion, like difference in cold or hot car engine. Also I know that that doesnt work well with plastic but it's much easier to just use torch than spark to get it going.

This may be off topic, but someone might find it interesting. Over unity electric generator. By AMA. Segment 1: 1 motor with bar connected to it standing vertically. Circular disc connected to bar that has magnets embedded in it surrounded in high permeability material to focus magnets outward pushing force in an upwards direction from top of disc. Segment 2: Hollowed out cylindrical Bar of material horizontally positioned. Flat hollowed out ring shaped material with openings around its outer top flat edge. Magnets surrounded in high permeability material embedded in these openings. Magnets positioned in openings around ring are in at least 1 of 2 configurations either all N magnetic field pushing out or N,S,N,S all around it. Just depends on whether your going for Piston structure or spinning structure explained below & whether you want it to be DC or AC current. Place these all along the cylindrical bar connected to it solidly, except at far ends of bar. At both ends of bar place ring of material that can be magnetically repelled in specific locations. (magnetically repelled in specific location is in reference to outside of ring area that faces away from center of bar)(Other side of same ring facing in towards center of bar is capable of being magnetically repelled all around) Ring must be connected solidly to bar. points of repulsion on these rings is off set from each other on each end of bar. 3 Hollow ring structures with small square bars protruding from each. Ring structure has all magnetic repulsion on inside of ring shape & can rap around the main bar so that the bar wont be causing friction on things as it moves back and forth or spins. 1st positioned around far left of bar, 2nd position at center of bar (be sure to leave enough room for magnetic structures to be able to move back and forth without hitting it) & 3rd positioned on far right of bar. Tube structure is constructed in two parts that fit together on top of each other length wise over main structure. Tube structure has 3 square openings for the bars that the Ring structures that are connected around the main bar keeping it from causing friction on structure, to slide into. This tube structure is designed with material that does not block magnetic fields. Perhaps some type of transparent material glass or other. At both ends of the tube structure there is a built in circular groove that will house a round disc. The ceiling/floor/left side/& right side of groove has openings for small magnets to be embedded in it, so that the pushing force from magnets is pushing in towards the edge of disc that goes in this spot. There is also 4 openings located on the top, bottom, left & right positions of the open groove. Small magnets are placed in these spots so when round disc is in position these magnetic fields will hit sideways keeping it from generating friction against structure. Far Ends of bar has Cap structure that screws over tube halves holding them together. Cap structure also has 4 points on inside top, bottom, left & right that have openings. These openings have small embedded magnets in them that exert there pushing force outwards (sideways) so it will keep disc in position, generating no friction against structure. Cap is made of material like tube so it does not block magnetic fields. (Note: These magnets in groove and cap structure are only needed for piston design. If Disc is directly connected to main bar so as it spins the bar spins, magnets are not needed here). The disc has ring around it (ring of material goes around outer edge and folds over front side & backside a small distance) that is repelled by magnetic fields so the 12 small magnets will keep it lined up but it will be able to spin without causing friction on structure. The disc has openings on it's flat side that face inside of tube and magnets surrounded in high permeability material are embedded in this disc. The disc has small bar that is connected to it's center that goes all the way to the other end of bar structure through the center of the hollowed out bar and connects to disc on other end. Disc on other end is set up the same but magnets embedded in it are off set in comparison. As first disc spins the magnetic fields will push against specific spot on disc connected directly to bar, pushing bar in other direction, once bar is fully pushed over, further spinning of disc will then align the other sides magnet to push it back. Tube structure also has half moon shaped protrusion on inside and on both halves so when tube is connected they line up to make a full ring shape on inside of tube, these half moon shaped protrusions have at least 1 small round opening on it's side in middle of curve that faces away from center of bar. The opening has a small magnet embedded in it so magnetic force is repelling out sideways away from center of bar. The protruding ring is positioned to line up slightly further in towards center of bar then the ring of magnetically repelled material connected directly to bar. This way when bar moves right or left it is magnetically stopped after a short distance. Copper coil setup: Copper coils are wound in at least 1 of 2 ways. Either coiled in circles next to each other (Like if you wound coils around a cylindrical bar) or laid out in a row as if wire was on flat table going up then bent to go down & back up until it formed a flat rectangle of wire bending up and down and then the entire structure folded around tube. Copper windings are then lined up perpendicular to magnetic fields on outside of tube. Ends of copper coils are connected into separate construct that will allow electrical current to flow somewhere else. Circular construct is built like a stand that goes around the outside of motor segment. Circular construct has flat ring of high permeability (magnetic field shielding) material that has small openings that will allow magnetic fields through specific locations. Top of circular construct has groove to allow the horizontal bar to balance on. Circular construct can also be placed on other end of bar so it is balanced. The motor segment is positioned so the disc connected to the bar that is connected to the motor is lined up so the disc passes under the horizontal bars disc that is at end of horizontal bar. The high permeability material keeps the magnetic fields in disc from hitting into the disc that spins or pushes the horizontal bar until just the right moment when the impact will cause the disc in horizontal bar to spin which will perpetuate the piston motion in the horizontal bar. More horizontal bars of the same design are built and positioned around the motor segment in a circular horizontal fashion all the way around. The bar connected to the motor can be increased in length to desired height (As much as motor can handle) and more of the exact same setup is repeated higher and higher up, maximizing the over unity potential of the construct to ridiculous proportions. :D Current from the horizontal bars is diverted to power the motor as needed and all other current is diverted to power my game console or the world. :) Interesting variation to this design would be to connect the spinning discs on far ends of horizontal bar to main bar that magnets are connected to so the magnets spin instead of getting pistoned back and forth. So long as moving magnetic fields are perpendicular to copper wires it should work. By AMA

When u keep printing random crap on the printer, I immediately subscribed

Sorry that did not go just constant flame. Like the idea of the Tesla valve , maybe a bigger dia for flow on the valve. Also steel pulse jets run red hot allowing the body of the jet to reign ight the jet once started. Maybe some steel wool inside the jet would help relight the next wave of gas . Great vid

Regarding the jam jars: As a chemist, I would suggest face protection and an ignition system with more standoff (e.g.; a barbeque lighter).

I so look forward to your videos, they have everything, comedy, amazing animation, science, the odd Tesla theme, 3d printing, electronics, danger and much more (just insert anything I missed here) You, sir, should have a tv program

ULTRAVIOLENT

Water jacket probably would help with that whole "melts" thing, and it seems to help with the whole "runs" thing too

11:10 "bigger is always better".😶Looks down😌I mean not always😌....dude take my sub..ur sence of Humour is too good 😂😂😂

Don't listen to those who hate on your accent/voice/pronounciation or whatever, I love it, sounds cool, original and unique! Your voice and your content is what made me subscribe back "then".. You're funny and makes really great videos, keep it up - I know I'm not alone on that! =) Merry Christmas also!

I couldn't have NOT subbed after seeing just the title of your video pop up in the recommendations. There is no way to make a bad video, have a bad channel, or be anything but a great person if you make a video about a printed pulsejet.

Hi Fellow Person, I would recommend putting extra fuel on the bottom. The fuel that is only on the sid ee's s starts the reaction and you don't have enough on the bottom

A coating of Starlite inside will add some burn time before the plastic melts. Starlite is a mixture of baking soda, corn starch, and elmers glue. NightHawkInLight made a youtube about it. Interesting insulator.

Dude, found your channel almost by accident and loved your humor and pacing, loved and subscribed! Hugs from Brazil and keep up the awesome work!

That jam jar made me engage my safety squints... Seriously safety glasses.

I love how Im watching a video of a guy making a rocket engine but also getting a history and science lesson at the same time LOL

I have been recommending using nano sized tesla valve types built in crystalline lattice structures with doped graphene to create particle accelerators and also desalination filters and CO2 scrubbing for years now. Also for hypersonic travel jet engines. I hope someone runs with this soon. Also magnetic flow valves that are dynamically controlled digitally at high speeds can enhance and control the flows according. Gases within the valve systems can be ignited at different mach level speeds at different points along the valve depending what gas is being channeled into the flow at what time, temperature and speed of the craft.

You deserve way more subscribers

Ok first of all, great video, well produced. Thumbs up and subbed. BUT I've studied pulsejets and played around with one. So two probable errors here: 1) it did NOT start. That sound was your air compressor starting. All you got was a flame for a while, long enough to melt the plastic. 2) you couldn't get more than a few pulses out of any design most likely because the chambers resonant frequency did not match the speed of the fuel+oxidizer combustion speed. Here is how to fix it: start with a longer exhaust tube, try starting it, and keep cutting off 0,3 cm at a time until it starts. Write down the tube length. Then continue cutting off more until it refuses to start again. Write down that tube length. The perfect tube length is in the middle between those two numbers. Now build a new one that has the perfect length. 3) the second thing you need to tweak is the size of the bottleneck in the intake Tesla valve. You probably need more valves or a larger valve. The air intake is probably choked right now. You can tell the difference between the two errors because the first error will give you a single pulse and no repeat. The second error will give you a few good pulses (like 3-10) and then it will starve (from lack of oxygen) and stop.

The sparking of an automotive coil (12 VDC auto-transformer) can be done using an auto ignition IGBT switch and a signal generator producing a turn on pulse (single) or a train of pulses (a sequence of pulse with a set duty cycle and frequency). You don't need a capacitor on the output for a simple circuit. Most ECM IGBT applications have a low value high voltage capacitor on the output, but this is for EMC. The IGBT should be on a heatsink, but can easily be driven directly from a digital source (555 CMOS timer) or a signal generator. The power supply can be a DC 12V power supply of about 10 Amps (best to use a linear designed supply with a large output capacitor, and also have a supply smoothing cap near the coil power feed (like a 1 uF X7R ceramic to help accommodate any lead inductance).

Dear Integza you can increase the temperature resistance of your prints using a starlite like mixture, despite not being the true thing the results will allow your jet engines to reach higher temperatures with out melting.

Is that professor snape on the wall back there?

OH. I was wondering where i'd heard that sound before. Then I remembered BRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP

I discovered this when I was 14. Took a pop can and held a bic lighter until I thought it was full enough and lit it. Burned the crap out of my hand.

I get so much inspiration from you man. You are the best youtuber i have seen in a while

WOO INTEGZA UPLOADEEEEED edit: INTEGZA UPLOADED AAAAAND IT HAS TESLA VALVES, BEST CHRISTMAS EVAR!

It was amazing I liked it! congrats I'm a mechanical engineer student and these kind of stuff amaze me!!

To be fair i watched all 4 Pulsejet Videos so many times now, bit still they dont get old. I am actually thinking about building one myself

I just found one of the funniest bloopers😂 i love your channel and couldnt place your accent but it makes this moment golden at 19:43 when you say “oven” you actually said “onion”.😂🤣

The only very important question is: Where to buy Slapattron?

It needs compression to use a spark plug. Its weak on atmospheric pressure. You need a glow plug.

i started watching your vids when you first started uploading i think you had 15k subs. And I'm super happy with the videos you make. since then I've actually became an engineer i hope you continue making these videos and inspiring people

Looking at the jam jar engine... Making a vertical exhaust resonation tube on the jar lid that the flame spits into would make this work reliably I think. I've messed with air horns a lot and find the resonation tube to be essential. They function in a similar way too if you think about it, they both have a chamber and a exhaust hole, they both rely on a pressure wave to induce resonance, and in the air horns you get a lower frequency and greater modulation power the longer the tube is.... So why not a pulse jet? 🤔😁 Try it for me I have no time!

Till now this guy is the best combination of knowledge and fun,love this guy,kudos brother,love from india

This is fascinating! Also, your accent not a big deal. I mean, your English is so much better than my Portuguese!

You could use a double pole double throw relay, the ignition coil and battery and presto... Simply place one of the relay coil's winding in series with the NC aramture point. When it powers up it opens -breaking the connection. The spring brings it back closed and cycle is finished then repeats. The other points serve as the ignition coild points. Works great...like the old OLD door bells. Also messes up TV' reception....be careful.

I am surprised it took me so long to discover you, loving your content man keep it going 👍

He has no steel or a welder but can afford to buy two 3D printers.