@@frankperry1543 Glad you enjoyed the vid! RUclips has a thing about showing or saying certain things at the beginning of videos. I think its like the first 30 or 60 seconds.
The music kicking in at 1:57 gave me mad Tony Hawk Pro Skater vibes, lol. Cool vid. After seeing one and with how simple they are I had to make my own.
3:11 i believe the bright yellowish-orange "flames" around the lower part of the glass is because the flames are creating a plasma from the glass's salts, thats why its yellow, for sodium. im bad at explaining..
I get what you mean, you explained it well. I initially thought it was contaminants but I cleaned out the jar to have a "pure" test. Some people noticed this in a short I posted and said the same thing you said. It's entirely possible that it got hot enough and localized in one area to (now I'm just guessing) strip some sodium ions??
@@ModernMadScientist yes, all it needs to do is create the first reaction, then it kinda set off the others, i notice it every time I use glass for things like this, well.. glass was the only time i noticed it, metal just starts glowing
@@ModernMadScientist that being said, the type of fuel can play a huge role in what color of fire it is, and as you might know, the white fire has all the oxygen it needs to burn the fuel all the way, thats why its a lot more powerful. but also any minerals in the fuel can cause deviation in color, isopropyl alcohol is good because its pretty much as pure fuel thats budget-friendly, the only issue is its higher demand for oxygen, it might be fun to test out more while using oxygen gas as well, just be careful, a good mixture is very explosive
I'm going to guess that performance is sensitive to things like burrs on the edge of the hole, slight dents in the lid, whether the hole is in the middle, and other small quirks of geometry. The reason being that these things affect the turbulence or lack thereof of air entering the hole.
I agree with everything here except for maybe the dents on the lid, it’s not that fickle. But definitely the hole placement and quality can affect how well it runs. Something to think about is that apparently you can do this with a triangle hole, although it won’t run for very long.
I think the main issue is the lack of oxygen. The exhaust fumes build up in the container and snuff the fire out. Bit the hole can't be too big, or it just doesn't work.
My hot (no pun intended) take is that the cross section of the volume of the container should have an appropriate ratio to the nozzle. With the same burn, an increased force of pressure might be observed with a much smaller nozzle. I might be wrong but that’s my logic. Like a hose with a small nozzle compared to the exerted force of the pump
I’m not quite sure I fully understand what you’re saying but yes the nozzle size changes depending on the jar size, but not by very much. A tiny jar I worked well with a 10mm hole while the larger ones worked well with larger holes like 12mm. If I were to use the opposite nozzle sizes for the jars, they wouldn’t work. It’s about finding the right ratio. I also heard a theory about jar shape as well, with “dead air” contributing to misfires.
@ I think you picked it up, but that dead space theory also makes some sense but I have a hard time with its permanence in the “tank” since resultant gas should fill the container entirely provided there are no obstacles. Keep making your videos man, I’m learning plenty from watching and it provides great food for thought. None of what I’m saying is correct, nor do I think it is. It’s all supposition and I thank you dearly for your videos
@@ResQRacesI’m glad you appreciate the video!! Science videos on RUclips is what got me to enjoy math and learning back in middle school, and I just want to carry the torch.
Thanks for the tutorial! Ive made several jam jar jets but the can pulse jets ive made seem to work a lot better. I uploaded a few shorts if you want to check them out. You should make one like mine with an aerosol can and exhaust.
@@jeremiahacuna4870 Bruhhhhh. I just made it and tried it out in my backyard. Ignition sounds like a loud gunshot XD. It was a loud boom and then it ran but I had to kill it before my neighbors came outside. I need to find a good place to test it.
@exoticloop haha that's awesome! Mine does the same thing, I was worried about my neighbor thinking it is gunshots but he doesn't seem to mind. Hope you find a chill spot to run it. What did you use for an exhaust?
Thanks! :D I'm pivoting to rocketry right now because it's a bit easier to make into video content. But eventually I want to do the other types of pulse jets that I talked about that the end of this video!
@@ModernMadScientist nice nice I think it’s sick like just taking a jar and being able to do that just the simplicity of it helped with my monkey termed brain I think I’m gonna try it tomorrow I gotta day off and a lot of variety sized jars
Update update sorry this is probably annoying,,, tried it and it works well maybe almost too well, after a good run the glass likes to break which is understandable but I was wondering if there was anything to stop that,, maybe there’s thicker glass jars somewhere.. I’m just kinda stumped on it
Not annoying at all! I love sharing knowledge and helping others learn, so I appreciate that you found my vid useful. :D That's the best problem to have, in my opinion! If given constant fuel, these engines could run forever, and are limited only by the fact that they are made of glass and will crack from thermal stress. (one part of the jar is getting much much hotter than another part) You could either put it in a shallow ice bath like I did here but I recommend nearly fully submerging it in cold ice water. Just make sure it doesn't float lol. This will help absorb and distribute the heat similar to the "Balloon with water over candle" experiment. Thicker glass jars could also work but I don't want you guys to spend money where you don't have to. Good luck, and keep me posted on how it goes! Maybe post a video and tag me? I'd like to see what kind of jar you are using bc the pasta jars I used were perfect but the mason jars that I tried to use suuuuuuuuuccccccked.
If you meant “diesel” then I want to warn you that the explosive force might be too strong for thinner jars to handle. I’ve seen it work before with thicker jars and haven’t witnessed a “Cato” but the risk is still there. 🙏
I'm leaning towards "highly doubt," but it's possible. You might just get a single whoosh and not a full combustion cycle. The gel consistency can make it harder to ignite and vaporize, and non-alcohol additives can negatively affect combustion. Let me know how it goes if you try it out!
Hope you enjoy :D
Lmk if you have any questions and what other things you'd like to see me make.
Kool video, but why did you feel the need to blurp out 'Nazi' at 0:34? Or was that a RUclips thing
@@frankperry1543 Glad you enjoyed the vid! RUclips has a thing about showing or saying certain things at the beginning of videos. I think its like the first 30 or 60 seconds.
The music kicking in at 1:57 gave me mad Tony Hawk Pro Skater vibes, lol.
Cool vid. After seeing one and with how simple they are I had to make my own.
Glad you enjoyed it! They’re fun to make. :D
This is awesome!
Thanks!! :D
Great great video, also entertaining! Imma build one rn lol
Thanks. :D Best of luck, it can be tricky to run a long time.
You need to shake the fuel before you light it to oxidize it. That's it. Shake it first, not during.
You need to put wheels on the jar and set it on its side to see of it really had jet engine qualities
3:11 i believe the bright yellowish-orange "flames" around the lower part of the glass is because the flames are creating a plasma from the glass's salts, thats why its yellow, for sodium. im bad at explaining..
I get what you mean, you explained it well. I initially thought it was contaminants but I cleaned out the jar to have a "pure" test. Some people noticed this in a short I posted and said the same thing you said. It's entirely possible that it got hot enough and localized in one area to (now I'm just guessing) strip some sodium ions??
@@ModernMadScientist yes, all it needs to do is create the first reaction, then it kinda set off the others, i notice it every time I use glass for things like this, well.. glass was the only time i noticed it, metal just starts glowing
@@ModernMadScientist that being said, the type of fuel can play a huge role in what color of fire it is, and as you might know, the white fire has all the oxygen it needs to burn the fuel all the way, thats why its a lot more powerful. but also any minerals in the fuel can cause deviation in color, isopropyl alcohol is good because its pretty much as pure fuel thats budget-friendly, the only issue is its higher demand for oxygen, it might be fun to test out more while using oxygen gas as well, just be careful, a good mixture is very explosive
I'm going to guess that performance is sensitive to things like burrs on the edge of the hole, slight dents in the lid, whether the hole is in the middle, and other small quirks of geometry. The reason being that these things affect the turbulence or lack thereof of air entering the hole.
I agree with everything here except for maybe the dents on the lid, it’s not that fickle. But definitely the hole placement and quality can affect how well it runs. Something to think about is that apparently you can do this with a triangle hole, although it won’t run for very long.
I think the main issue is the lack of oxygen. The exhaust fumes build up in the container and snuff the fire out.
Bit the hole can't be too big, or it just doesn't work.
Yeah, this vid is a few months old. I’ve found that the hole is gonna be bigger than you expect (in my results/analysis section)
so cool! get yourself a magnetic stirrer!
True! That would help soooo much tbh. Keeping the fuel moving.
@@ModernMadScientist by the way the slow motion was sick af. what camera?
I just used a regular iPhone 12 but make sure there's enough light so it's not too grainy.
4:58 I'll use 50 thank you very much
My hot (no pun intended) take is that the cross section of the volume of the container should have an appropriate ratio to the nozzle. With the same burn, an increased force of pressure might be observed with a much smaller nozzle. I might be wrong but that’s my logic. Like a hose with a small nozzle compared to the exerted force of the pump
I’m not quite sure I fully understand what you’re saying but yes the nozzle size changes depending on the jar size, but not by very much. A tiny jar I worked well with a 10mm hole while the larger ones worked well with larger holes like 12mm. If I were to use the opposite nozzle sizes for the jars, they wouldn’t work. It’s about finding the right ratio. I also heard a theory about jar shape as well, with “dead air” contributing to misfires.
@ I think you picked it up, but that dead space theory also makes some sense but I have a hard time with its permanence in the “tank” since resultant gas should fill the container entirely provided there are no obstacles. Keep making your videos man, I’m learning plenty from watching and it provides great food for thought. None of what I’m saying is correct, nor do I think it is. It’s all supposition and I thank you dearly for your videos
@@ModernMadScientist look at the shape of real jet engines, they are more like tubes. Maybe would be better using glass test tube containers
@@davefletch3063will do! I want to get an Erlenmeyer flask and try that out. Much closer in shape to the original reynst pot.
@@ResQRacesI’m glad you appreciate the video!! Science videos on RUclips is what got me to enjoy math and learning back in middle school, and I just want to carry the torch.
Thanks for the tutorial! Ive made several jam jar jets but the can pulse jets ive made seem to work a lot better. I uploaded a few shorts if you want to check them out. You should make one like mine with an aerosol can and exhaust.
Those look cool! I think I have a few empty cans laying around that I could use. Any tips?
@exoticloop I made a little vid explaining how I rigged it up and I tagged you in it. I'm sure you can make one a lot better
@@jeremiahacuna4870 Bruhhhhh. I just made it and tried it out in my backyard. Ignition sounds like a loud gunshot XD. It was a loud boom and then it ran but I had to kill it before my neighbors came outside. I need to find a good place to test it.
@exoticloop haha that's awesome! Mine does the same thing, I was worried about my neighbor thinking it is gunshots but he doesn't seem to mind. Hope you find a chill spot to run it. What did you use for an exhaust?
@@jeremiahacuna4870 I used an old metal handle from a duster.
What would happen if you drilled 2 holes? (1 intake and 1 exhaust?)
That can work but they would have to be on opposite ends, like a pulse jet. Check out my short on the “doohickey” fart can pulse jet.
Nah bro make more this vid was entertaining
Thanks! :D I'm pivoting to rocketry right now because it's a bit easier to make into video content. But eventually I want to do the other types of pulse jets that I talked about that the end of this video!
@@ModernMadScientist nice nice I think it’s sick like just taking a jar and being able to do that just the simplicity of it helped with my monkey termed brain I think I’m gonna try it tomorrow I gotta day off and a lot of variety sized jars
Update got a nice sized pickle jar and the yellow bottle of heet, gonna try it out soon
Update update sorry this is probably annoying,,, tried it and it works well maybe almost too well, after a good run the glass likes to break which is understandable but I was wondering if there was anything to stop that,, maybe there’s thicker glass jars somewhere.. I’m just kinda stumped on it
Not annoying at all! I love sharing knowledge and helping others learn, so I appreciate that you found my vid useful. :D
That's the best problem to have, in my opinion! If given constant fuel, these engines could run forever, and are limited only by the fact that they are made of glass and will crack from thermal stress. (one part of the jar is getting much much hotter than another part) You could either put it in a shallow ice bath like I did here but I recommend nearly fully submerging it in cold ice water. Just make sure it doesn't float lol. This will help absorb and distribute the heat similar to the "Balloon with water over candle" experiment.
Thicker glass jars could also work but I don't want you guys to spend money where you don't have to.
Good luck, and keep me posted on how it goes! Maybe post a video and tag me? I'd like to see what kind of jar you are using bc the pasta jars I used were perfect but the mason jars that I tried to use suuuuuuuuuccccccked.
2:32 what fuel/mixture did you use for this?
Surprisingly, this one was rubbing alcohol. Trust me, I was surprised it lasted as long as it did and I have not been able to recreate it….
Have you tried, just a prolate Spheroid in led.
I’m afraid I’m not sure what you mean exactly
5:07 nvm I'm going to use desol
If you meant “diesel” then I want to warn you that the explosive force might be too strong for thinner jars to handle. I’ve seen it work before with thicker jars and haven’t witnessed a “Cato” but the risk is still there. 🙏
1:26 😂
inquiringly inquired
Anyone here from Driving-4-Answers video? lol
Me
Instead of any of those fuels will hand sanitiser work
I'm leaning towards "highly doubt," but it's possible. You might just get a single whoosh and not a full combustion cycle. The gel consistency can make it harder to ignite and vaporize, and non-alcohol additives can negatively affect combustion. Let me know how it goes if you try it out!