at 5:27 you can se a piece of acrilic hiting his nuts at mach jesus, i would get knocked out from that. @WarpedYT answer is ''Lol... That's pretty funny'', is it? is it funny? 🤣🤣🤣🤣
@@Tommy-ye5vf Good eye, I actually thought I edited that part out I'm going to have to take a look again. But it hit my leg and it looks more dramatic in slow motion then it actually was.
BEST demo i had of this was a PILE DRIVER we used in the field erecting huge wind mill generators in a wind mill field. Seeing the MASSIVE steel drop down followed by a loud BANG! as the steel shoots back up (pushing the pile downward into the ground) the steel reaches the point of return and drops back down with fuel, then, BOOM! and it repeats blasting and blasting. It was aswesome to see the massife diesel piston basically
Old trick i learned from a farmer and used to do with my spring airgun, to get more out of it, was to add a drop of gun oil in the skirt of the pellets before every shot. Every time it ignited i could hear the classic sound of cracking the sound barrier and the shot would go further. It also absolutely shredded the o-rings in the chamber, plunger and sealing faces.
You could put one drop of diesel in that tube and still get an explosion! When you consider how little fuel gets injected in the average modern diesel to achieve combustion, you're essentially flooding that tube with diesel. WD-40 is pretty close to what you would need if you want some sort of vaporization. We always used that when we were building potato guns as kids.😄👍👍
This highlights why the injection timing is critical. Rudolf Diesel learned that the hard way when one of his engine prototypes exploeded, nearly killing him.
@@WarpedYT If you'd liek to thest this theory against the hydrolock theroy I have seen in other comments, di ti with a little acetylene gas, instead of liquid fuel like diesel. Acetylene is very well suited to compression ignition, and has been used as a not solvating starting fuel, for diesel engines, in place of ether.
Could you mention the pressures in bar as well pls? It would make it easily understandable for a lot of people! Otherwise that's such an educational video which could be used in so many classrooms- brilliantly done! Suggestion for the tube: Have a stronger one, maybe with increasingly thick walls towards the bottom?
@@WarpedYT Thanks. As I said, great video. I can just point people there now if I want to explain anyone how a diesel engine works. Where would we be without Rudolph....!
cant you convert? 1bar is close enough to 1 kgcm2 is close enough to 15 psi to be relatively simple, i thought... 60 psi is 4:1 CR, or about 4bar, or about 4kgcm2... 120 psi is 8:1... 240 is 16:1... comeon, learn some basic arithmetic. education should be about thinking for yourself, not having everything laid out in front of you. its the thinking part that counts.
I make these for scouts using a ½" copper pipe stub out (sometimes also called air chambers), a wood dowel slightly smaller than the ID of the copper pipe, o-ring (fit on to the dowel and sitting in a grove that was carved in), and a larger dowel to make the cap / striker that the inner dowel is "plugged" in to (by way of drilling a centered hole in the cap). Hold the copper pipe in hand, and strike the striker on the ground (think upside down), and quickly let the glowing char cloth free on to kindling.
@@ElementofKindness I have encountered the friction fire roll and imo it's inferior. 😅 the piston works with anything flammable to hand, and can even dry the kindling in seconds and starts a fire in seconds, with minimal effort. with char-cloth I've gotten embers off of just one hit! full fire in 10 seconds. (note that he's using huge diameter bores here, but with a proper, pencil-width bore it's much MUCH easier and faster) from what I've experienced, only a BIC would be faster, especially if it's damp out. and unlike a BIC or a strike rod, a piston doesn't run out of fuel, you can just grab anything that'll burn and it'll work. 🔥♾
I don't think I've ever seen a video by you that wasn't interesting! I like to learn new stuff and see someone try the things I've once or twice have wondered myself.
The tests with the diesel were experiencing pre ignition, this is a great visualization of how dangerous preignition is to internal combustion engines. Edit: i also think the compression ratio was too high, might have something to do with the pre ignition
I loved this! it made me think of a neat campfire idea for camping equipment. a lightweight vacuum spring crank outer tube that then compresses the air into the cylinder, it would be a pressure relief check valve (like in boosted cars) that then has the fire go through that and uses ventruli/bernulis principle to have the combusted gases go into the tip to help further increase the burn to help start a fire like a rocket stove. that way it can be super light weight and compact but creates a solid jet of flame that helps make campfires!
@@1Life4Passion absolutely, despite the incredibly salty comment below of psudo-intellect of a clear defensive jealousy this is one of the simplest designs in human history and might have been used well back in the day with water or treated skin/sinew diaphragms. Its a compression/friction heating system. The valve at the bottom releases its combusted exhaust into a chamber below that forces it to friction-ally squeeze through and mix into another chamber that draws more air in through a shroud around it that has holes that lead into that chamber. That chamber then tapers to another hole that is straight then expands. this causes the air to mix together with any new kindling and or bbq alcohol wet wipes that you might have on hand to produce a simple easy camp fire. The aluminium tube has a screw pattern on the outside of it so that way a basic seal (o-ring above the screws below) top part of the tube can move and expand. This increases the total volume of vacuum that provides a "spring" thats tensioned to the below screw system blow. So it wants to rapidly descend to decrease the volume. The total surface area of the outer ring only needs to be small because the gained total energy potential is based on cubic volume, so it doesn't need much, and using a simple perpendicular crank with a latching gear you gain stored energy that can be released all at once. Same with the screw pattern below as that can then be latched to simple vertical grooves cut through them and can use a simple linear bearing that allows for it to store, in a vacuum, more energy volume potential. This makes it, exceedingly and exceptionally, simple to take apart, clean, repair, and maintain. All while being that much easier to manufacture en masse' for cheap. So profit can be extremely high. Even better though, because the tube below has to flare out that allows for you to slow down the burning gases and store them to more evenly and, extremely conveniently I add, simply have a good burning continuous flame that helps you burn things to make a nice warm & cozy little campfire. So, unlike the dolt who also commented below this comment, its everything simple, easy, and repeatable that will last for a very long time while being extremely reliable. remember, being normal like me means you pursue ideas with passion and hate people like that commentor. No one likes these trolls and its easy enough to forget about them. lets them die in their own stewed filth that only has them exist in terrible ways of life that is negative and toxic for everyone around them as the highly radioactive garbage they are ;) The plunger is just another one way check valve that draws air in as you crank it up to position, the tube gap isn't as big of a deal with you have a little offset ring and o-ring, the oil isn't needed for lubrication when its not used often and wont expand enough to matter, the below section & shroud is a simple stainless steel part that has an anti-galling screw ring for the aluminium part above that is press fit in (loosely) and held in with a simple star headed screw to easily be replaced so you can use a gasket in-between to improve the sealing. The bottom chamber part only needs to be a simple parabolic curve spike that can have the chamber behind it to contain more fuel to burn as it has to go from the outside of the ring of that curve (stators that hold it there just need to be large enough because of the linear check valve stem that you screw in to the upper aluminium tube so its super simple to keep it stable during high velocity and pressure combustion) so that way you can have it draw in air in a outer side to inner side vortexing curve to draw in the extra air through simple plates that have some groves cut in to them to allow for the combusted gases to mixes together with the draw in air to the hole in the center that uses simple hour glass shapes (funnel) to a stem to where the held in extra fuel is. This allows for you to put a screen there (like any gas lamp does, or I dunno 420 blaze it!!! screens) to properly diffuse it and continuously draw more air in to act as a miniature rocket stove that help burn that fuel and create a continuous flame. since it gets diffused to a large area and is still going to run decently hot, it means a larger area of flame can help dry out and heat a larger stick and kindling to area to make a higher chance of a fire in your camp happen. That is the basic system that is pretty easy to follow. it just means blow, suck, squeeze, wooshy burn, blow some more occurs to make a continuous flame that can be placed on the ground easily upside down, or even on its side to help you make a quick and easy camp fire :) hope the explanation helps.
@@paradiselost9946 well, no there is also a chamber below to burn more fuel that also draws more air in to burn it so its easier to actually make camp fires. That and its using air around you as the air spring because you make a vacuum. Truthfully its far more simple that deciding to put chemicals on a stick that don't get destroyed by water or oxidation over time. but hey dude, a "fire piston" (not combustion ignition with a check valve that has a simple burn chamber) is surely what it is. fire pistons are everywhere, we have so many! I love starting up my engine full of fire pistons! /s
Very cool idea man. Keep in mind your "injection angle" is much too early. It should blow it up every time. Think about when the diesel gets injected on a Diesel engine. Great video man.
@@WarpedYT I could tell you were on that trail right away you pretty much mentioned it in the video - just worded it differently. Honestly man I'm really impressed at how you made all that to begin with. I wonder what would happen if you made the cylinders out of metal. Not that we could see much, but maybe a cut away cross section afterwards might show putting from "knock" or something? Or maybe you'd have made a gun and put a hole in the ceiling 😂
This was fascinating to watch. I'd love to see a similar demonstration for dieselling with an air rifle/pellet gun where petroleum jelly is the fuel and adds a little explosive pop to the action. Come to think of it a see-through air rifle would be amazing to see in general, either spring or gas ram powered in particular.
Your correct that the diesel fuel as a liquid has much more energy *(chemical) energy than a small amount of lose fire cloth or charcoal or cotton or cellulose solid This is why gasoline *liquid* and *diesel* and common Jet A fuels are liquid, easy to pump through hoses from tanks to fill fuel tanks in vehicles, fast, easy, cheaply
I had a good example of dieseling while playing with a pellet gun, we blocked the end of the barrel with one pellet and loaded a second pellet normally. When friring the oil in the barrel combusted and made a loud explosion.
Maybe you can try heating diesel to its Flashpoint which is something like 65°C or something. That Will allow it to be in a more volatile state and require less mechanical pressure from your hammer. Maybe... (I'm no expert) And thank you for all your really interesting and educational content!
Heres a video idea: can you do a Water Ingestion test on your jet engines? It would be interesting to see how much water in liters/sec different size jet engines would take before flaming out. Please do it!
Also try with gasoline. Gasoline is more volatile, it turns into vapor easier than diesel, but has higher auto ignition temperature than diesel. 534f vs 410f. Should require more compression to ignite gasoline and it would produce a bigger bang because it burns faster after it is ignited. People have the wrong impression that diesel can take more compression, but that is false because in a diesel engine fuel isn't pre-mixed with air. It burns instantly when injected. Gasoline engine have fuel pre-mixed, so it needs to worry about premature (auto) ignition more. Gasoline in a diesel cycle engine would need even higher compression ratios and would be blowing pistons and heads because faster release of energy.
One major difference between doing this with diesel vs cloth is diesel fully mixes with the available air while cloth only has its own surface area to react with air, so you get much faster and more thorough combustion of available air-fuel mix with diesel than cloth. Not surprised at all that pressure goes up too fast for the tubes to survive with diesel.
@@WarpedYT Another thing that likely plays into it is that the diesel air-fuel mix has a far more homogeneous temperature for compression-ignition than charred cloth. With well-mixed diesel, you really get everything igniting everywhere all at once. With the cloth, you have solid clumps which are much harder to uniformly warm up to ignition temperature, especially when that heat is provided by the layer of compressed air around it insulating it from the rest of the air mass. That is probably why you didn't get much of a reaction with cloth until you hammered the plunger for a second time after a first partial combustion kicking temperatures up a few notches right next to the remaining bulk cloth.
I wish you could try to make that “ideal” combustion engine that was presented on channel “driving 4 answers” some days ago; fascinating but rare to see this engine
what, the rotary vane pump that despite 150 years or more of people thinking its going to "wonderful", has never had ANY successful running prototype? still waiting on him to confess that it was a practical joke and he has you all fooled cus yall gullible.... its "rare" because it isnt an engine, and produces no useful power in any way whatsoever.
Hey Matt, I was wondering (since you have a few mini jet engines) if you could modify one into a high bypass turbofan and get more thrust vs the stock design? It would be a cool project, and maybe Garrett over at Cleetus McFarland could trial it in flight. Maybe a collaboration to fund the project. I think the world's smallest high bypass jet engine world get some attention.
Those explosions looked amazing, but man it was so obvious the sounds were edited in. Is it possible to record the sound at a higher frequency range and then lower it so that it sounds the way it would in slow motion? Great demonstration, didn't know diesel worked that way!
it has to be edited your thinking about it too much, blame it on the universe. so the way sound frequency works for instance if a bassy explosion is approx "100-2000 Hz for smaller guns, 10-300Hz for bazookas, 0-400 Hz for mortars, 0-1000 Hz for can- nons and 0-200 Hz for explosives." so if u record a sound at 200 hz and match it with slow motion footage that is 100 times slower than you end up with 2hz, which is Infrasonic and frequency below the lower limit of human audibility. so in short you just wouldn't hear it at all.
There are several differences between diesel and char cloth. I don't think the total combustible energy is relevant for your explosion result. One big factor is surface area. Pre-combustion the diesel is in vapor form, perfectly mixed with the air. So every tiny diesel droplet can burn at the same time. For the cloth it takes 1-2 seconds until the fire burned to the core of the strings. Another factor is combustion products. char cloth is mainly carbon, only producing CO2. Diesel is a hydrocarbon producing water vapor (H2O) and CO2.
Another thing to consider, liquid will not compress like air, therefore the diesel was over pressurizing the tube, probably with a little help for explosion.
That wouldn't matter, because The column of air still exists above the diesel itself, even when compressed the air pocket is still present. Additionally if you look closely you can see the ignition before the explosion. Whether you had no diesel or 1 in of liquid diesel The air column is still the same for the most part.
Could you try the same with water? I really wonder if the fluid(diesel) just failed to compress, and made the tube explode instead. Given you are hitting with a hammer, you would be stopping the hammer and using that energy to send the sides flying. As for the flames, you totally got it!
You could be right but, it was about the same amount of air in the chamber even with that much diesel, But if you look close you can see ignition for a split second before it explodes. Originally I was thinking the same as you said, but it seems like an exploded as soon as the ignition occurred, I think it just happened too fast
I heard of these some time ago, cool to see them in a see through version! Speaking of compression ignition engines; could you do a see through HCCI (homogeneous compound compression ignition) engine? Those were a popular way to power RC aircraft and are commonly referred to as 'RC diesel engines' as it works in a similar fashion, but with a variable compression ratio. They don't burn normal diesel either, but a mixture of ether, kerosine and castor oil.
Interesting. I would like to see the time counter in the slow-motions. Very curious to see how fast this diesel combustion happens since people call it slow burning fuel.
It could be Hydro locked by the time you hit the piston all the way down the fuel is compressed as much as I can so it has no choice but to expand and blow out the bottom of the tube
Makes me wonder, how do they adjust the ignition timing on a diesel engine? It seems like mere compression ignition would be too inconsistent. Also, how do they stop the engine, cut off the fuel? I've seen videos of run away diesels where they have no way to shut them off.
Diesel timing is determined by when the fuel is injected into the chamber, in older diesels you could rotate the pump exactly like you would rotate a distributor on a older petrol engine. A runaway diesel is running on its own engine oil, most commonly its from turbo seals that leak or blow out and the oil from the turbo is sucked into the intake and burned as fuel. You need to starve the engine of air to stop it from running away.
The tube failure occurs when the piston completely compresses the gas and then impinges on the incompressible liquid which transfers the hammer force into the tube causing it to fail.
I've detonated WD-40 at work hammering on things with my big boy air hammer, I'm sure you can do it with diesel on an anvil with a steel hammer in open air.
It's basically about reaching criticality. You not only want the fuel, air and pressure to be just right, but also to come up to the ignition point faster than it can absorb the energy. A piece of loose cotton would serve much better this demonstration. Anything more, and it's just too powerful and too hard to ignite, as it involves more mass.
Matt, i didn't know if you had a slightly hollowed out piston, or flat at the end, but that may help a little bit with the end result of returning the piston instead of explosion? The other thought i would have had is trying a thicker material for the outer housing... But I'm sure that was a thought, but not able to get the material in a different wall thickness.
I mean isn’t an explosion just combustion in an enclosed space, where the compression exceeds the destructive force of the container… I fully expected them to explode when you brought the diesel into the equation
Very well explained, your absolutely correct, I bet you if the walls were much stronger the piston would have been expelled instead of rupturing the walls
I like the way the table height where these tubes are exploding are at testicle level. You are a pretty smart guy.
Lol... That's pretty funny
at 5:27 you can se a piece of acrilic hiting his nuts at mach jesus, i would get knocked out from that.
@WarpedYT answer is ''Lol... That's pretty funny'', is it? is it funny? 🤣🤣🤣🤣
@@Tommy-ye5vf Good eye, I actually thought I edited that part out I'm going to have to take a look again. But it hit my leg and it looks more dramatic in slow motion then it actually was.
“Test” tubes
@@WarpedYT Sorta makes you stop and think innit...
BEST demo i had of this was a PILE DRIVER we used in the field erecting huge wind mill generators in a wind mill field. Seeing the MASSIVE steel drop down followed by a loud BANG! as the steel shoots back up (pushing the pile downward into the ground) the steel reaches the point of return and drops back down with fuel, then, BOOM! and it repeats blasting and blasting. It was aswesome to see the massife diesel piston basically
I have seen one of those, very interesting device indeed.
Those diesel pile drivers are so cool to watch
Blowing the tubes is what preignition is all about
True
Beat me to it.
Yeh fuel needs to be after full compression not before
Old trick i learned from a farmer and used to do with my spring airgun, to get more out of it, was to add a drop of gun oil in the skirt of the pellets before every shot. Every time it ignited i could hear the classic sound of cracking the sound barrier and the shot would go further. It also absolutely shredded the o-rings in the chamber, plunger and sealing faces.
That's really interesting and after doing this experiment I can totally see how that would work, that's crazy
Petroleum jelly works too, it's a lot of fun
Dude i conected a new path on the brain thanks for that. So many memories putting oíl on my air gun 😂😂 poor orings
That 1 sqr inch piston had me thinking "Hey Phineas Gage, stop hitting that rod with a hammer!" -- Thx for another great video
He lived.
@@nathanieljames7462 They both did, I'm glad one much luckier than the other. Cheers Nathaniel!
You could put one drop of diesel in that tube and still get an explosion! When you consider how little fuel gets injected in the average modern diesel to achieve combustion, you're essentially flooding that tube with diesel. WD-40 is pretty close to what you would need if you want some sort of vaporization. We always used that when we were building potato guns as kids.😄👍👍
I think you're absolutely right, I don't remember personally how much lighter fluid I put in the potato gun
Quick half second squirt of hairspray did it for us, years ago.
Great video!!!
Thank you, not so bad yourself!
Fuel injectors in gas engines become Napalm Nozzles in a diesel. 😁
Nope
This highlights why the injection timing is critical. Rudolf Diesel learned that the hard way when one of his engine prototypes exploeded, nearly killing him.
You're right, I do remember reading that somewhere.
@@WarpedYT If you'd liek to thest this theory against the hydrolock theroy I have seen in other comments, di ti with a little acetylene gas, instead of liquid fuel like diesel. Acetylene is very well suited to compression ignition, and has been used as a not solvating starting fuel, for diesel engines, in place of ether.
This video is the perfect example for diesel torque
Every time the tube exploded I just started laughing
The A.I. pics are just gawd zamn
why is he using AI?
Cheap and quick
@@Emilijano249 I like the older style ngl it felt like he put genuine effort into it and really drew me in
I have been waiting for a video of this for a long time, thank you :-)
Perfect chance for a crossover of your clear metal and the custom LED 😎
Thanks for keeping at it!
Love your necklace!
Thank you 🦄
3:19 Dude's over here making IEDs 😂
Between you and Todd, you guys have great videos.👍🇺🇸
thank you
That's a very cool necklace you got there my man👌🏼
Dude, you make some of the best videos on all of TH-cam 👍🏼👍🏼👍🏼
Keep being awesome 😎
more diesel content please
FANTASTIC!LOVE IT!YOU ROCK MAN
Could you mention the pressures in bar as well pls? It would make it easily understandable for a lot of people!
Otherwise that's such an educational video which could be used in so many classrooms- brilliantly done!
Suggestion for the tube: Have a stronger one, maybe with increasingly thick walls towards the bottom?
I will next time for sure
@@WarpedYT Thanks.
As I said, great video.
I can just point people there now if I want to explain anyone how a diesel engine works.
Where would we be without Rudolph....!
cant you convert?
1bar is close enough to 1 kgcm2 is close enough to 15 psi to be relatively simple, i thought... 60 psi is 4:1 CR, or about 4bar, or about 4kgcm2... 120 psi is 8:1... 240 is 16:1...
comeon, learn some basic arithmetic. education should be about thinking for yourself, not having everything laid out in front of you. its the thinking part that counts.
@@paradiselost9946 Why do all the maths?
Anyway, he responded very positively already and I think it's sorted.
@@demil3618 cant you count?
2 times you achieved a pre-chamber Diesel. 🤣👍
Very cool video. Thanks for posting!
Glad you enjoyed it!
This video is so underrated idk why yt does not promote this video
I appreciate that, but that's how My videos usually go, They start out slow and then gain momentum later on.
It's because of the diversity, each one of my videos is different subject.
Im a little late, but I never miss a video from Matt.
thanks!!
I make these for scouts using a ½" copper pipe stub out (sometimes also called air chambers), a wood dowel slightly smaller than the ID of the copper pipe, o-ring (fit on to the dowel and sitting in a grove that was carved in), and a larger dowel to make the cap / striker that the inner dowel is "plugged" in to (by way of drilling a centered hole in the cap). Hold the copper pipe in hand, and strike the striker on the ground (think upside down), and quickly let the glowing char cloth free on to kindling.
my favorite camp firestarter!
You mustn't have tried a friction fire roll yet. ;-)
@@ElementofKindness I have encountered the friction fire roll and imo it's inferior. 😅
the piston works with anything flammable to hand, and can even dry the kindling in seconds and starts a fire in seconds, with minimal effort.
with char-cloth I've gotten embers off of just one hit! full fire in 10 seconds. (note that he's using huge diameter bores here, but with a proper, pencil-width bore it's much MUCH easier and faster)
from what I've experienced, only a BIC would be faster, especially if it's damp out. and unlike a BIC or a strike rod, a piston doesn't run out of fuel, you can just grab anything that'll burn and it'll work. 🔥♾
Love the video and love the necklace bro
Thank you
Great demonstration. Seeing is believing. 👍
I don't think I've ever seen a video by you that wasn't interesting! I like to learn new stuff and see someone try the things I've once or twice have wondered myself.
3:56 The engine has finally started :)
The tests with the diesel were experiencing pre ignition, this is a great visualization of how dangerous preignition is to internal combustion engines.
Edit: i also think the compression ratio was too high, might have something to do with the pre ignition
I love your contents.
I loved this! it made me think of a neat campfire idea for camping equipment. a lightweight vacuum spring crank outer tube that then compresses the air into the cylinder, it would be a pressure relief check valve (like in boosted cars) that then has the fire go through that and uses ventruli/bernulis principle to have the combusted gases go into the tip to help further increase the burn to help start a fire like a rocket stove. that way it can be super light weight and compact but creates a solid jet of flame that helps make campfires!
Could you explain this to a Normal guy like me?
@@1Life4Passion overly complicated fire piston with very small orifice at end, or spring loaded relief valve.
@@1Life4Passion absolutely, despite the incredibly salty comment below of psudo-intellect of a clear defensive jealousy this is one of the simplest designs in human history and might have been used well back in the day with water or treated skin/sinew diaphragms. Its a compression/friction heating system.
The valve at the bottom releases its combusted exhaust into a chamber below that forces it to friction-ally squeeze through and mix into another chamber that draws more air in through a shroud around it that has holes that lead into that chamber. That chamber then tapers to another hole that is straight then expands. this causes the air to mix together with any new kindling and or bbq alcohol wet wipes that you might have on hand to produce a simple easy camp fire.
The aluminium tube has a screw pattern on the outside of it so that way a basic seal (o-ring above the screws below) top part of the tube can move and expand. This increases the total volume of vacuum that provides a "spring" thats tensioned to the below screw system blow. So it wants to rapidly descend to decrease the volume. The total surface area of the outer ring only needs to be small because the gained total energy potential is based on cubic volume, so it doesn't need much, and using a simple perpendicular crank with a latching gear you gain stored energy that can be released all at once. Same with the screw pattern below as that can then be latched to simple vertical grooves cut through them and can use a simple linear bearing that allows for it to store, in a vacuum, more energy volume potential.
This makes it, exceedingly and exceptionally, simple to take apart, clean, repair, and maintain. All while being that much easier to manufacture en masse' for cheap. So profit can be extremely high. Even better though, because the tube below has to flare out that allows for you to slow down the burning gases and store them to more evenly and, extremely conveniently I add, simply have a good burning continuous flame that helps you burn things to make a nice warm & cozy little campfire.
So, unlike the dolt who also commented below this comment, its everything simple, easy, and repeatable that will last for a very long time while being extremely reliable. remember, being normal like me means you pursue ideas with passion and hate people like that commentor. No one likes these trolls and its easy enough to forget about them. lets them die in their own stewed filth that only has them exist in terrible ways of life that is negative and toxic for everyone around them as the highly radioactive garbage they are ;)
The plunger is just another one way check valve that draws air in as you crank it up to position, the tube gap isn't as big of a deal with you have a little offset ring and o-ring, the oil isn't needed for lubrication when its not used often and wont expand enough to matter, the below section & shroud is a simple stainless steel part that has an anti-galling screw ring for the aluminium part above that is press fit in (loosely) and held in with a simple star headed screw to easily be replaced so you can use a gasket in-between to improve the sealing. The bottom chamber part only needs to be a simple parabolic curve spike that can have the chamber behind it to contain more fuel to burn as it has to go from the outside of the ring of that curve (stators that hold it there just need to be large enough because of the linear check valve stem that you screw in to the upper aluminium tube so its super simple to keep it stable during high velocity and pressure combustion) so that way you can have it draw in air in a outer side to inner side vortexing curve to draw in the extra air through simple plates that have some groves cut in to them to allow for the combusted gases to mixes together with the draw in air to the hole in the center that uses simple hour glass shapes (funnel) to a stem to where the held in extra fuel is. This allows for you to put a screen there (like any gas lamp does, or I dunno 420 blaze it!!! screens) to properly diffuse it and continuously draw more air in to act as a miniature rocket stove that help burn that fuel and create a continuous flame. since it gets diffused to a large area and is still going to run decently hot, it means a larger area of flame can help dry out and heat a larger stick and kindling to area to make a higher chance of a fire in your camp happen.
That is the basic system that is pretty easy to follow. it just means blow, suck, squeeze, wooshy burn, blow some more occurs to make a continuous flame that can be placed on the ground easily upside down, or even on its side to help you make a quick and easy camp fire :)
hope the explanation helps.
@@paradiselost9946 well, no there is also a chamber below to burn more fuel that also draws more air in to burn it so its easier to actually make camp fires. That and its using air around you as the air spring because you make a vacuum. Truthfully its far more simple that deciding to put chemicals on a stick that don't get destroyed by water or oxidation over time.
but hey dude, a "fire piston" (not combustion ignition with a check valve that has a simple burn chamber) is surely what it is. fire pistons are everywhere, we have so many! I love starting up my engine full of fire pistons! /s
Woooo super interesting as always🥰🥰
Very cool idea man.
Keep in mind your "injection angle" is much too early. It should blow it up every time.
Think about when the diesel gets injected on a Diesel engine.
Great video man.
thats exactly what is was, I def realized that while i was editing lol and then i read about rudolf diesel and how he learned this the hard way
@@WarpedYT I could tell you were on that trail right away you pretty much mentioned it in the video - just worded it differently.
Honestly man I'm really impressed at how you made all that to begin with.
I wonder what would happen if you made the cylinders out of metal. Not that we could see much, but maybe a cut away cross section afterwards might show putting from "knock" or something?
Or maybe you'd have made a gun and put a hole in the ceiling 😂
This was fascinating to watch. I'd love to see a similar demonstration for dieselling with an air rifle/pellet gun where petroleum jelly is the fuel and adds a little explosive pop to the action. Come to think of it a see-through air rifle would be amazing to see in general, either spring or gas ram powered in particular.
Your correct that the diesel fuel as a liquid has much more energy *(chemical) energy than a small amount of lose fire cloth or charcoal or cotton or cellulose solid
This is why gasoline *liquid* and *diesel* and common Jet A fuels are liquid, easy to pump through hoses from tanks to fill fuel tanks in vehicles, fast, easy, cheaply
I had a good example of dieseling while playing with a pellet gun, we blocked the end of the barrel with one pellet and loaded a second pellet normally. When friring the oil in the barrel combusted and made a loud explosion.
so, preignition is blowing up the tube....CRAZY
Maybe you can try heating diesel to its Flashpoint which is something like 65°C or something. That Will allow it to be in a more volatile state and require less mechanical pressure from your hammer. Maybe... (I'm no expert)
And thank you for all your really interesting and educational content!
that's a cool video you made there
Awesome images
thank you
4:23 even had turbo surge like a diesel engine 😂
That was some great footage!
Heyyy bro! This was really cool! 😎👌🏼
Bro needs special gloves for that 4 finger stubby hand 😂
Heres a video idea: can you do a Water Ingestion test on your jet engines? It would be interesting to see how much water in liters/sec different size jet engines would take before flaming out. Please do it!
Very cool! Great video
cool to see it through the clear tube
i thought so too
Also try with gasoline. Gasoline is more volatile, it turns into vapor easier than diesel, but has higher auto ignition temperature than diesel. 534f vs 410f.
Should require more compression to ignite gasoline and it would produce a bigger bang because it burns faster after it is ignited.
People have the wrong impression that diesel can take more compression, but that is false because in a diesel engine fuel isn't pre-mixed with air. It burns instantly when injected. Gasoline engine have fuel pre-mixed, so it needs to worry about premature (auto) ignition more.
Gasoline in a diesel cycle engine would need even higher compression ratios and would be blowing pistons and heads because faster release of energy.
So cool! Great content and experiments!
One major difference between doing this with diesel vs cloth is diesel fully mixes with the available air while cloth only has its own surface area to react with air, so you get much faster and more thorough combustion of available air-fuel mix with diesel than cloth. Not surprised at all that pressure goes up too fast for the tubes to survive with diesel.
That's a good way to put it, I definitely think it's correct And what you said matches exactly what happened.
@@WarpedYT Another thing that likely plays into it is that the diesel air-fuel mix has a far more homogeneous temperature for compression-ignition than charred cloth. With well-mixed diesel, you really get everything igniting everywhere all at once.
With the cloth, you have solid clumps which are much harder to uniformly warm up to ignition temperature, especially when that heat is provided by the layer of compressed air around it insulating it from the rest of the air mass. That is probably why you didn't get much of a reaction with cloth until you hammered the plunger for a second time after a first partial combustion kicking temperatures up a few notches right next to the remaining bulk cloth.
Saw a couple examples of precombustion , and how much more complete the burn was ,,, !
Awesome idea.
Isn't it somewhat similar to what those 4cm pistol shrimp do? They create cavitation bubbles that reach 4000ºC. Almost as hot as the sun surface.
And.. If you increase the heat and the pressure , you will producing NOx ....😉
I wish you could try to make that “ideal” combustion engine that was presented on channel “driving 4 answers” some days ago; fascinating but rare to see this engine
what, the rotary vane pump that despite 150 years or more of people thinking its going to "wonderful", has never had ANY successful running prototype?
still waiting on him to confess that it was a practical joke and he has you all fooled cus yall gullible....
its "rare" because it isnt an engine, and produces no useful power in any way whatsoever.
I think you were hydro locking your engine. :D :D :D
You need a custom glove to keep it safe! Also, pimp unicorn pendant!
Fucking BOSS ! as we used to say as kids. Very cool 👌
Hey Matt, I was wondering (since you have a few mini jet engines) if you could modify one into a high bypass turbofan and get more thrust vs the stock design? It would be a cool project, and maybe Garrett over at Cleetus McFarland could trial it in flight. Maybe a collaboration to fund the project. I think the world's smallest high bypass jet engine world get some attention.
One of my survival gear fire starting methods is a small fire piston.
It looks like you added a LOT of fuel in there. I wonder how much is used in a single ignition cycle in a diesel engine where volume is much larger.
Maybe Im just a simpleton, but the most basic things are the most interesting to me.
I agree
Hello there! Have a great Weekend!🙌🏼🙌🏼
nice necklace!
Those explosions looked amazing, but man it was so obvious the sounds were edited in. Is it possible to record the sound at a higher frequency range and then lower it so that it sounds the way it would in slow motion?
Great demonstration, didn't know diesel worked that way!
it has to be edited your thinking about it too much, blame it on the universe. so the way sound frequency works for instance if a bassy explosion is approx "100-2000 Hz for smaller guns, 10-300Hz for bazookas, 0-400 Hz for mortars, 0-1000 Hz for can- nons and 0-200 Hz for explosives." so if u record a sound at 200 hz and match it with slow motion footage that is 100 times slower than you end up with 2hz, which is Infrasonic and frequency below the lower limit of human audibility. so in short you just wouldn't hear it at all.
@@WarpedYT I see, thank you for the detailed explanation. I must say, it probably looks way better with fake sound then without.
There are several differences between diesel and char cloth. I don't think the total combustible energy is relevant for your explosion result.
One big factor is surface area. Pre-combustion the diesel is in vapor form, perfectly mixed with the air. So every tiny diesel droplet can burn at the same time. For the cloth it takes 1-2 seconds until the fire burned to the core of the strings.
Another factor is combustion products. char cloth is mainly carbon, only producing CO2. Diesel is a hydrocarbon producing water vapor (H2O) and CO2.
Use a thick fused quartz tube in stead of the acrylic. Should be much stronger.
Another thing to consider, liquid will not compress like air, therefore the diesel was over pressurizing the tube, probably with a little help for explosion.
That wouldn't matter, because The column of air still exists above the diesel itself, even when compressed the air pocket is still present. Additionally if you look closely you can see the ignition before the explosion. Whether you had no diesel or 1 in of liquid diesel The air column is still the same for the most part.
@@WarpedYT its stoich ratios. only so much oxygen available, only so much fuel will get burnt. mostly the hydrogen part.
Could you try the same with water?
I really wonder if the fluid(diesel) just failed to compress, and made the tube explode instead.
Given you are hitting with a hammer, you would be stopping the hammer and using that energy to send the sides flying.
As for the flames, you totally got it!
You could be right but, it was about the same amount of air in the chamber even with that much diesel, But if you look close you can see ignition for a split second before it explodes. Originally I was thinking the same as you said, but it seems like an exploded as soon as the ignition occurred, I think it just happened too fast
I heard of these some time ago, cool to see them in a see through version! Speaking of compression ignition engines; could you do a see through HCCI (homogeneous compound compression ignition) engine? Those were a popular way to power RC aircraft and are commonly referred to as 'RC diesel engines' as it works in a similar fashion, but with a variable compression ratio. They don't burn normal diesel either, but a mixture of ether, kerosine and castor oil.
The lower the piston is when you hit it the less compression you get. No wonder it had to be hit so many times to work... ;)
Interesting. I would like to see the time counter in the slow-motions. Very curious to see how fast this diesel combustion happens since people call it slow burning fuel.
I should have included that, each event was three frames, each frame is 0.0003/sec so that means it would be 1000th of a sec or 0.001
@@WarpedYT thanks! Looking forward to see the further experiments.
It looks pretty easy to make your own engine
For the most part I think it is, it's like everything else it's just the fine tuning is very difficult.
Good work! Rudolf would be turning in his grave.
you mean akroyd, right? rudolf simply stole it.
@@paradiselost9946 Fire piston, invented 100 AD
Its called 'Gobek Api' come in south east.... founded about 18 century
It could be Hydro locked by the time you hit the piston all the way down the fuel is compressed as much as I can so it has no choice but to expand and blow out the bottom of the tube
Makes me wonder, how do they adjust the ignition timing on a diesel engine? It seems like mere compression ignition would be too inconsistent. Also, how do they stop the engine, cut off the fuel? I've seen videos of run away diesels where they have no way to shut them off.
He is just struggling way too much with his fire piston, I have used one before and it would ignite every single time.
A diesel doesn't run away because of timing issues. If the fuel is removed from the combustion equation the equation fails.
Diesel timing is determined by when the fuel is injected into the chamber, in older diesels you could rotate the pump exactly like you would rotate a distributor on a older petrol engine.
A runaway diesel is running on its own engine oil, most commonly its from turbo seals that leak or blow out and the oil from the turbo is sucked into the intake and burned as fuel. You need to starve the engine of air to stop it from running away.
@@derekjooste9339 Thanks for the explanation.
@MrTarfu sure pal.
If Mike O'Malley was secretly a mechanic
The tube failure occurs when the piston completely compresses the gas and then impinges on the incompressible liquid which transfers the hammer force into the tube causing it to fail.
Nah, Even with liquid on the bottom you still have the column of air even if it's compressed, it's definitely the ignition that's causing it too blow
This is what happens when ballistic gel has that flash after the bubble collapses
That’s Cool 🔥
Should put little figurines in the tubes to show what happened to the submersible tourists that went down on the titanic.
Because a compression-ignition diesel engine demo is EXACTLY the same thing that happened. Yep.
explosion + liquid = nowhere to go
That's why your tubes blew up, hydrolock.
Try with hydrazine next, it's similar to diesel...
Try less diesel more vapor for the next one, the heat will vaporize the diesel and it should combust, hopefully in the first smack
I've detonated WD-40 at work hammering on things with my big boy air hammer, I'm sure you can do it with diesel on an anvil with a steel hammer in open air.
early lesson when i converted a cox 049 to diesel... turning it over by hand with some wd40 and it fired up and gave me a nibble...
let's press the piston with a diesel engine with a hydraulic press
It's basically about reaching criticality. You not only want the fuel, air and pressure to be just right, but also to come up to the ignition point faster than it can absorb the energy. A piece of loose cotton would serve much better this demonstration. Anything more, and it's just too powerful and too hard to ignite, as it involves more mass.
👍👍
I wonder if something like a slingshot would be fast enough to relieve pressure before blowing the tubes.
Matt, i didn't know if you had a slightly hollowed out piston, or flat at the end, but that may help a little bit with the end result of returning the piston instead of explosion?
The other thought i would have had is trying a thicker material for the outer housing... But I'm sure that was a thought, but not able to get the material in a different wall thickness.
The pyrolysis created not hydrogen but some atomized or vaporized carbon.
I mean isn’t an explosion just combustion in an enclosed space, where the compression exceeds the destructive force of the container… I fully expected them to explode when you brought the diesel into the equation
Very well explained, your absolutely correct, I bet you if the walls were much stronger the piston would have been expelled instead of rupturing the walls
I have a fire piston because I like primitive fire starting techniques and apparently I'm a masochist because it's NOT easy to use.
Sweet neclace
Thanks!
You don't need fuel. If you have enough air and hit it hard enough it'll still go. Air itself is combustible.
of course it is... ;)