New Vacuum Cannon Design - No Vacuum Pump Required!
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- Опубліковано 27 вер 2024
- I recently had the idea for this new vacuum cannon design that many of you might be interested in. Since it hasn't been very long since my last vacuum cannon video I thought I would make this a more casual demonstration so I could ramble about all the various features and concepts without worrying about fitting everything into a script. If you would like to see my previous video of my 4" bore cannon you can check it out here: • How to Make a Large Bo...
Here is my video about making PVC pistons like the one used for this cannon: • How To Make PVC Piston...
A big part of how I've been able to keep making videos on UA-cam over the last year is thanks to Patreon supporters. If you enjoy these projects please consider contributing on Patreon and you'll get some other cool stuff like early access to videos. Most of all your support will mean I don't have to rely on the volatile UA-cam ecosystem to keep this channel afloat, and new videos will be assured no matter how bad UA-cam messes things up in the future. My page: / nighthawkprojects
Special thanks to my top Patrons! Syniurge, Matthew Leitzke, & TheBackyardScientist!
Here's a question for you to think about: Why does there appear to be no recoil when this cannon fires, but my last vacuum cannon recoiled heavily?
Hint: The answer is not just because the cannon is held down more securely, though that's part of it.
I assume it has something to do with the projectile launching out as well as the air coming in from the other side of the cannon. The two forces cancel each other out? Hopefully you get what I am saying.
Nope. Both cannons would have no recoil in that case.
Hmmm... you have me stumped here.
Maybe the Vacuum in the new design isnt as powerful as with the vacuum pump, and plus this one being secured better.
The vacuum in this cannon is actually even stronger than in my last one.
Fantastic application of the PVC piston!
Thanks Grant! Feel free to use it, I would love to see what others can come up with for that piston. I was pretty proud of how simple they are to assemble.
Grant Thompson - "The King of Random", future mash mellow shooter?
This makes me wonder if the concept could be turned into a vertical rocket launcher.
make youtube together
i dont think so. try searching for marshmallow in a vacuum. the projectile would expand and get jammed in the barrel.
This is seriously the best cannon on youtube... So simple yet so powerful!!! I love it!
I like the coaxial piston cannon because you can pump it up walk around and fire at will no stands needed. Lotta fun mines awesome
Maybe you can use a magnet to hold the projectile
that is pretty clever!
That's really clever. Why didn't I think of that!
thx
theres always a clever solution for everything it just has to cross youre mind
Rutger 420 NightHawk needs to see this!
0:05 how to crack open a cold one with the boys
Irritation Gaming lmao
How to crack a boys with the cold ones 😂
I feel like you should patent this new, novel, and highly effective method of stamping aluminum.
lollolololol
Stamping at the speed of sound
This is one of the craziest cannons ive seen and probably good thing i didn't know about this as a kid
That cannon has some serious power. Great video!
Would it be possible to scale it down even further? My thought was to make it a handheld dart launcher using it like you would draw on a bow.
try syringe
Wouldn’t that affect the power? The longer the barrel the more power it can produce. Right?
you should put smoke or fog behind your project where its sucked and record it in slo-mo
Inside the vacuum it would not work. But if you had smoke/flour behind the projectile (outside the vacuum) the smoke would get sucked into the pipe pushing the projectile out the other end leaving a trail of smoke behind it. The only way it would work inside the vacuum would be if you put a fine solid such as flour in front of the projectile and pulled back the piston to shoot it out.
Heinocraft how does it work? Or why do you say that?
What I mean is put the smoke or whatever outside of the vacuum. Like right behind where the air get sucked in so we can see it get sucked in?
Preston Blackard yup i wasn't specific enough huh. I meant outside, behind his project.being the end where the SUCC
I concur.
This is a phenomenal design! I did a science fair project on vacuum cannon barrel lengths a number of years ago and ever since I have wanted to find a way the same results could be achieved without a vacuum pump. I love the simplicity of this cannon with the same amount of power as your other cannons. Nice work Ben keep it up!
I really like this design! Great video too.
Maybe if you put the flap underneath the barrel it will move out the way before the projectile hits it because it won't have to work against gravity, hope this helps
with just the right amount of rubber or spring tension pulling at it as well
Eren Thompson Was thinking the same as well
Eren Thompson was thinking the same, he could just have a rope to hold it up before he has established a vacuum. Once he has moved that piston back just a bit, it would hold itself in place and he could release the rope. It would be faster, the question is if it would be fast enough. It would be really easy for him to test though
Or he could just use a longer barrel...
Actually... there are also two other simple solutions.
1. He could lower the mass of the whole value. (hinge out of plastic, hinge glued to the valve instead of screwed on with a nut and bolt.)
2. He could increase the (m/s)/rad of the valve. He could do this by mounting the other side of the hinge (opposite of the valve) directly to the top of the cannon instead of mounting it on top of that piece of wood and THEN on top of the cannon. Basically, by increasing the length of the valve arm, he's increasing the amount of force required to get the valve to travel 80 degrees and clear the barrel. Just like how you can apply the same force to a door from the handle and right next the hinge but pushing from the handle doesn't make it swing open as fast as pushing from right next to the hinge.
Have you thought about using a Spring to open the Flap disk faster? You could use a Piece of String to hold it down while you are pulling the Vacuum, then release the string and the vacuum will hold it shut. as you fire the Spring will open it faster than the pressure alone, at least that was my thought Process. Maybe it is worth it to check it out? as alwysy Great Video Mate
Best Regards
Joe
I know where I'm going during the zombie apocalypse. You make all the cool toys!
Would it be feasible to make a handheld version? Much like a toy or maybe close to the power of a slingshot?
That would be a rather interesting project :)
It seems like it would be pretty easy to just scale this down. I don't think it would need its own video.
That's a fair point man, but it could be more than just scaling it down ;)
It could have added features which would facilitate it's handheld use, so it's no a cumbersome thing to use for quick recreational purposes. It could even feature a spring mechanism of some sort to aid in firing, something to make reloading even easier and also a working flap, so you don't have to carry lots of burst disks around with something supposed to be easily carried and used
Of course, however, remember the power comes out of all the air he is evacuating and a smaller tube would mean less power. It would also be much harder to draw back if it was made powerful.
Indeed, I was wondering about that, it may become rather unfeasible depending on how small we're talking about
Scaling down to hand held size would mean much less power, true. Hmmm... Perhaps a two person weapon, like a bazooka? One man holding and aiming the tube, and one pulling the piston.
...
... and now I'm contemplating a streamlined fin stabilized projectile...
As far as my Tastes go, you have to be one of the most if not, the most premier, UA-cam creator out there man. Bravo once again.
So simple, yet so ingenious! Great work!
dude, like, coolest physics teacher ever
It would be so cool if you could pull the piston back using some king of crank or gear system
Yeah plus you would need a system like that to make it more powerful since otherwise you need to physically pull the force.
Maybe if he did a flat gear along the piston with the crank and gear firmly attached the cannon then it would not need to be anchored.
Vakus Drake ITS CALLED GEARING.
you are an absolute genius, I would have never thought of using a vacuum like this to create a cannon. Thank you!!!!
His eyebrows go up every time he looks at the camera
But I love his contest more than I love his eyebrows
Holy shit he does it every time , now i cant see this
I waited entirely too long to watch this video. Awesome.
Really enjoy your videos, and have done so for a few years. The number of supporters on patreon is a bit disappointing considering the quality of the videos you produce. I'd love to support you, but I don't have a regular income yet and no payment method available to use on patreon. But some day, I'll be there.
Anyways, continue making great, well-produced videos showcasing awesome ideas!
Don't give up on the flap idea. I'm thinking that you could use a much thinner and lighter weight flap. I would try either stiff aluminum sheet, or better yet, some carbon fiber sheet. The gasket could be made from Silpat (or any other silicone baking sheet). Also, that hinge looks pretty heavy as well; maybe just tape the top with a small length of scotch tape. With this design, the you are basically making a reusable disk more than a flap. Love your stuff! Never stop building!
I'm going to build this cannon and film it at 40 000 fps. I'm really interested to see how the burst disc works up close and personal.
If you do be sure to send me a link to the video. I'd like to see it
Spirit Please send me a link, too. I would like to build this vacuum cannon.
Spirit please can you send me a link too ? I'm very interested :)
Where's the vid bud?
beautiful design.simple and functions smoothly.
How old is Ben? He has grey hair, but still looks like he could be 25 years old. Must have good genes
I'm 27. I've had gray hair since I was 17 or 18.
Wow, didn't know you could start getting grey hair that early. Still an awesome face tho. Love your videos!
Swekkinator I'm 15 and I have Gray hair it's normal
Swekkinator tru dat. he has a fabulous haircut
Grey hair happens early in some people for some reason, I'm sure Wikipedia could tell us exactly why. I went to school with this kid who's hair started turning grey at 14/Freshman year of HS, by the time we graduated he was grayer than my father, but more of a darker grey. Weird thing is, I saw him about a month ago at a gas station for the first time since 2011 graduation and it didn't seem like he'd aged a day. Genetic mutations fascinate me.
Thank you for all the ideas and projects. My family loves your easy to follow teachings and expertise
Let me show you its features!
+1 for the Jörg Sprave Refference
I think I started following your videos maybe 10 / 12 years ago when I was in high school. I haven't watched your stuff since then. This video recently popped up and seeing you made it so far now with many other explorations is really motivating.
I really love that you made this I wanted to make a vacuum cannon before but didn't want to spend the money on a pump thanks😃
I was actually thinking of making a nerf gun with this principle for some time now
Aha! The coaxial cannon was making my brain hurt but this is sort of the same only using the world as the outer reservoir. Now I get it!
I had not thought of piston cannons in that way, but you're exactly right.
Awesome! Just put on a vacuum accumulator on the muzzle to get rid of the back pressure, and you have a winner.
Love UA-cam.. learn something new everyday!
Is it possible to scale this cannon differently with the same principle but smaller or larger to fire different projectiles?
Yes, but making it larger would require a great deal more force to pull the piston back. You can make it smaller in diameter, but it still needs to be quite long to work properly.
I really love this video. The enthusiasm and explanations it's so fun to watch and I get a smile from ear to ear when I watch you talking about a amazing creation!!!
How far can it shoot?
About 6
@@Sky20653 Yeah, more or less
super simple and effective design. I think it's amazing how sometimes projects start out very complicated but as you work with the ideas they become very simple. I also like this different style of production.
Thanks Schel!
I am going to make this with my son this summer, it will be a great project with him to get him interested in working with some of the tools in my shop. Thank you!
I've never seen a vacuum Cannon like this it's really cool
Now thats what I call cracking open a cold one with the boys
under 1 minute club
yoss
how are you still getting likes EVEN after 1min after the video?
creatorlater I'm happy to be in the 1min club
creatorlater you can get creams that numb sensitivity that help with that issue.
Bet the wife isn't happy with that...
i like how you have become comfortable in front of the camera now.
hello
WHY DID YOU READ THIS
creatorlater why the fuck not
creatorlater lookin for the song name
Volume
Tilt it upwards - would love to see how far it flies... just watch out for those cars!
1st time watcher... video well done. Amazing how much power is in nature without costing a ton of money.
Best use of Pabst I've ever seen
This actually what my friend and I tried to do because we didn't have a vacuum pump and we didn't feel like making one. We went small scale first and made one that shoots BBs pretty darn far. We were think of making one out of larger PVC next. Anyways, pretty cool video!
Dude! This is ingenious.
I have to go build one now. probably gonna make it tennis ball size.
UA-cam randomly recommended this video to me, and I'm glad it did. It's kind of weird because I just built a tennis ball launcher, using PVC pipe, for my dog yesterday. That cannon is awesome! When I'm done with this comment, im going to watch your other videos. Thanks!
Saving this to my "Project with Kids" playlist. Great way to get them interested in the science involved. Also Budget friendly. Thanx for the great content!
It's not fair. You're extremely inventive and ridiculously good looking! The rest of us have no chance! :)
I really like the simplicity of this design. No pump, only one (well, two, if you count the projectile) moving parts, and it builds on a previous design (your PVC piston).
watched your videos for years, and I've always found them very engaging, useful and informative!
In stead of using ducttape you could do this:
1) Saw off an inch or less of the kind of pipe you used for the barrel, to create a ring.
2) Cut open that ring, I recommend cutting diagonally. After that just bend it open. If it doesn bend easy enough, just heat it up and bend it out a little bit.
3) In stead of taping the burst disk, just jam on that ring. If've cut it open diagonally you won't have a region where it's not held tight.
4) If it doesn't hold a vacuum try with 2 rings, put on one with the slot on the top, and the other one with the slot on the botton.
---
How to improve on the hinge-seal-thingy:
You want it to be a light as possible. Omit the hinge altogether, you're even better off asking someone to hold it for you until you have a vacuum.
Some things that are light and can hold a vacuum:
Firstly *the bottom* of a soda/beercan; ok, it's just 2 inches in dia, but still.
Secondly the bottom of a coke bottle... Yes, coke bottles implode under vacuum, but here's how you could modify it:
_(The bottom of the bottle is obviously more rugged than the sides, that's already good)_
You basically cut off the bottom; then insert in into your barrel, so that the inside of the 'bottle' is facing the outside air, and the outside of the bottle is facing the piston; after that you gently heat up the edges and bend them over so that they hook onto the edge. As a finishing touch you add some rubber or silicone onto the end of the barrel.
This is really awesome! I always told my high school physics teacher I was going to make a vacuum cannon and show him but couldn't do it without a vacuum pump. This design makes me want to try and make my own though!
I've always wanted to make a cannon with my daughters. This is one we can do. Thank you.
This guy is such a happy looking person.
I think this is really well done all around.
I think it would be a cool idea to either use a fog machine or produce smoke at the end of the cannon, to show the rush of air into it. Just a thought!
Great videos!
Hello dude! Thanks for the video. I appreciate the calm nature of your video. Looks like a fun project! Keep up the good work!
I can think of a couple of upgrades.
- A bellmouth at the rear of the barrel to assist in getting more air in behind the projectile faster.
- A piston ring style band around the projectile to help seal it in the barrel better.
I love the simple design.
watching your videos is really refreshing. you don't only learn, but you also become fascinated by how it works. you do a really good job of keeping it interesting too. deserves more views :^)
Very nice . Brings many creative things to mind using this concept
Show me a " burst disk " that can repeat or reset itself Good job with the video , thanx
The Slingshot channel should pick this idea up. I know Joerg could make this more badass. Just imagine a six shot rotary barrel hand held version automated with cordless drills and pulleys.
You sir have a niche for being able to "teach" some Hella difficult concepts n make them "oh, yeah... That's why"... Thank you.
Not to put down your narration videos, but I really enjoyed seeing you explain it in person rather than you narrating.
Great video! Awesome cannon!
I love that PVC twang it makes when it fires!
thats fantastic, im gonna make one later. this is so elegant and simple i love it, just earned yourself another patron
Dick Cheneh but you have to use aluminum and duct tape on each fire...
Not all that efficient
theres nothing that cannot be fixed with this design
Thanks for another awesome video, they have been an amazing source of inspiration for gear projects I've done with my kids. Just finished a ukelele using your cigar box guitar techniques. Just signing up to support your videos on patreon, very well earned thank you very much!
Thanks! Hope the ukulele turned out well. Email me a picture sometime, I'd like to see it.
Thank you video and explaining how vacuum works
Your inventions are always so amazing to see and watching you build them is so Intriguing.
Loved this video! I totally want to make a vacuum cannon now! Thanks for making this!
Love it!
You should fire it in a dark room with spot lights on the cannon. Fill the area with a fog machine and point the camera towards the end without the foil to see the rush of air into the pipe
Your production value is really good
You are a genius!!! I have been thinking about how to do this!
Simply outstanding!👍👍👍👍👍
I really like these video formats a lot. even if you aren't showing off something new its interesting and fun to have you explain the concepts behind how the cannon works.
plus its nice to have a video thats less clinical than they have been in the past, which isn't to say that they aren't still great!
Oooh Imma try my hand at a mini one to fire plastic bb bullets! Should be some genuine fun!
beautiful design
I love, and watch, all of your videos! ❤
FRICKIN AWESOME PROJECT!
This taught me so much with such a simple design. Excellent demonstration!
Me and my dad made a similar thing a while back from spare drainpipe and a vacuum cleaner. we had a long barrel out the back, with a t joint on the end. the vacuum cleaner attached to the bottom of the joint, and we had one of those flippy things at the front to hold the vacuum. i cant remember exactly what we fired, but i think we put tennis balls in the back of the barrel (it was open ended), and the vacuum cleaner pulled it down the barrel and momentum pushed it out the end. we made this shortly after an episode of "the big bang", a kids tv show a while back. worked great, and i really want to make it again
nighthalkinlight sure knows how to crack open up a cold one with the boys
Awesome! It's really cool seeing a manually activated version. I'll re-patronize soon (I have some big expenses right now, moving into my new house.)
this is the best way to go... great job.. thanks for the great videos.
Hey there, Kiwi fishing fanatic here. Just a thought on this Vacnon :) if you were to use line instead of the inner pipe and attach a winder to the base you could make it winchable :).. which would only really cut down on the distance behind your Vacnon but would make for an interesting change. Would make a great bait launcher.
Great design. Love the powerless option.
NightHawkInLIght you are a champion and I have a challenge for you. Try making an mortar that doesn't use compressed air
Great invention! I'm gonna try and make this, I'll give an update on the results...
EDIT: Made it. Great design. This was one of my first inventions of this kind, it was really fun to see it fire. One bit of trouble I had was having the foil seal at the front pop as I pulled it back before it fired, I had to layer one thicker kind of foil over a thinner one. It wasn't as powerful as this one, about a third the size, but it shot about 25 ft, that's good enough for me. Thanks!
This is freaking brilliant!
That is really neat. The problem with the flap is it loses pressure around the side the further it get away from the muzzle. Maybe try something like a mushroom disk insert kind of like a thin wide champagne cork. Then attach a spring pulling it down attached to the "mushroom head" part. That way once the "cork" is pushed forward just enough to clear the end it gets yanked directly down out of the way. That and if it isn't fast enough the spring will at least tether it from getting lost.
this has got to be one of the best and simplest vacuum canons out there...
get a 25mm taped and marked board behind the canon end to calculate muzzle speed, like what the mythbusters did...
also make another projectile with a more streamlined nose, and a closed rear end, with duct tape fins, that will open up once free from the canon....
would love to see that video...
cheers
I love your vacuum cannon with the piston and crank. Elegant. But aluminum foil over the muzzle seems inelegant, although effective. I saw that the flapper seal did not open fast enough. So here's an idea: attach an arm under the barrel so that it ends about 18 inches below the barrel's muzzle. To the arm you attach a piece of surgical elastic, say 3/8 inch. Make a seal for the muzzle that has a a small step, say 1/8 inch, that fits inside the barrel. Attach a simple elastic to either side of the barrel long enough so that it can be stretched to span the front of the barrel. You use this elastic to hold the seal on the front of the barrel before you draw the vacuum. Run the piston to front of the barrel. Place the seal over muzzle and use the rubber band to hold it in place. Crank to make a vacuum. Before you fire by pulling the piston all the way out, release the rubber-band that was holding the seal in place. It will stay just fine with atmospheric pressure. Stretch the surgical elastic and attach it to the seal. Between the atmospheric pressure and the step it should stay in place. Fire the cannon. As the projectile pushes the small amount of air in front of it out of the barrel, that air will push the seal off of the tube. The elastic will pull the seal out of the way before the projectile hits it. You will have to experiment to see how much elastic you need. Given the speed of the projectile, you might need a foot of elastic stretched to 5 feet to move the seal away fast enough. If this works you would have a fully built cannon that does not need tape and foil. Good luck, Phil.
In my most recent video I solved this issue by using plastic cups instead of foil.
I am totally impressed, what a good idea. I plan to copy it for my physics class.
I love watching your videos. Can't wait to try out some of these projects you did with my son when he is old enough.
oh that Chuckle!! so cute!