Pringle Can Rockets! - My best worst idea yet 

Hi guys! Good news, at this stage I'm looking at hitting RU-vid full time so get used to seeing this face more frequently! If you would like to support this gigantic leap of faith I'm taking, feel free to show you support through subbing, commenting, sharing this and my other videos or simply by angle grinding some stuff unnecessarily. My Patreon link in case you are able to assist there: www.patreon.com/CraigTurner You get early video access and some more behind the scenes stuff (probably me nerding out on very specific aspects of videos that were cut.) But huge thanks to everyone for the support. Lets have some fun! 👨‍🏭🔥

"I picked this up for free from a hospital that had been using it as part of a catheter kit" -while blowing in it 😂😂😂 subbed

The sequence of the double Pringle can into the dashcam crash is BRILLIANT!!!

Im glad you're still out there doing funny shed projects with easy to find objects

that bit with one landing on the road had me almost falling of my chair backward with laughter

Actual engineer here: Fin size could be bigger but its not the main issue. For a rocket to be stable its similar to a throwing dart. The center of mass needs to be ahead of the center of pressure in order for the rocket to naturally point upwind. This means you need to add mass to the leading nosecone so the mass is now ahead of the center of pressure (just infront of the fins). This added mass also gives the rocket more momentum, and will use the energy from the gas over a longer period of time, creating higher altitude.

what i learned from this video - yes, yes you can - do not mess with this man

I do a similar project with my physics students. The way that we check to see if the rocket will be stable is by doing a simple test. You just need about 1-2 meter of string. Attach one end of the string to the rocket’s CG. The rocket should hang horizontally. Then, holding onto the opposite end of the string, spin the rocket over your head. If the rocket aligns itself so that the nose aligns into the direction of flight…you’re good. If the rocket is angled a bit/perpendicular/backwards, either increase the nose weight and/or increase fin size.

The sarcastic self depreciating commentry really sets this video appart. Plus rockets :)

The diameter of the thrust on the Pringles cans is the same as the diameter of the rocket. This causes stable thrust vectoring. The soft drink bottles have a much smaller diameter of thrust vs. the body of the rocket, which causes thrust vectoring instability because there's mass and drag outboard of the thrust vector. Loved this video and subscribed.

Say could you combine your love for rockets with scaring off the neighbors cats?

"We couldn't figure out what happened at first, but looking at the data we found out it flew like an absolute piece of crap" hahahaha, I'm dying.

For the 2L bottle. I’d say that your center of gravity(cg) is behind your center of pressure(cp). To fly stable, it should be the other way around. You can add weight to the front of your rocket to make the cg higher

Great combination of “easy” fun crafts, and humor at every opportunity 😂👍

This is one of funniest, coolest uploads that I've watched in ages. I need to do this... I'm 62 year old....

Ah man this guy always has me in splits! It's not even been 30 seconds!! You are a treasure mate! Cheers from Bengaluru India❤

This is one of the coolest videos I've seen in a long time. Well done.

The comedy is gold! And the science... right up my alley

Glad to see you back at it! Love the quality!

I love the comedy you add. Thanks for the laughs.

I love this style of humor. Very fun video.

I went the CHEAPER route with rocket launching - 3/4” pvc hooked to an AIR COMPRESSOR! It lacks the cool slo-mo effects but at only 60psi, it launches the PAPER & tape rockets excitingly high! The grandkids love it!

"it didn't really go that far, it just got really high" - yeah, that's the story of my life

Seeing a blue flame move in a discarded transparent hospital tube, is something I wasn't expecting to see today! ... Very kool visuals! Good job!

I absolutely loved the kitty vids, and checked back many times to see if there would be any more, then gave up. Fortunately a mate had subscribed and got this new one right away, and it's truly hilarious. The quickfire almost throw-away gags have me in stitches, and the "clumsy" building process is a very clever and extremely funny way of pretending you're just stuffing stuff together when in fact it's obvious that you're highly competent. Genius in fact. And going fulltime YT? AWESOME 😁. That's it, I'm subscribed now!

I’ve flown a fair few water rockets, the simplest of which are just a 1.25L soft drink bottle with 3 fins (not even a nose cone!), a nozzle and roughly 1/3 water 2/3 pressurised air. If done right they’ll go well over 50m high. (In my unprofessional view) there’s 3 major differences between the most successful water rocket designs and your rocket bottle. 1. Ballast: in a water rocket, a fair amount of the water doesn’t make it out of the bottle until after max height (apogee is the technical term). This adds a lot of mass to the bottle, increasing its momentum, so drag comparatively exerts less of an effect. 2. Thrust time: in your rocket, all thrust is finished within about a meter of leaving the launch pad. In a water rocket with a well designed nozzle, the thrust will only stop just before apogee, lasting a second or two. 3. Fin size: Your fins are simply too small for the size of your bottle. I think your biggest issue with the soft drink bottles is they have almost no mass. So although they get a lot of speed early, they run out of momentum fast. Unfortunately adding lead weights as ballast is likely against the Australian rocket code, but you could add a bit of mass by putting a decorative cardboard tube around the bottle and making a bigger, heavier nose cone. You could counteract this issue with a small diameter nozzle, so that the thrust lasts longer, but that gets complicated fast, and might end in your bottle becoming shrapnel if you generate too much constrained pressure. In either case, larger fins are a good idea, but without a more efficient utilisation of your thrust, I suspect this will just result in a straight, but sadly slow and low flight. I think that for propane rockets, a pringles can is actually surprisingly optimal, and you’ll struggle to beat it. *** Please do not take this comment as a guide on how to build a rocket (of any type) out of soft drink bottles. They are surprisingly strong, but they can and will explode (especially if modified in any way or exposed to high heat at any point prior to pressurisation), as will other equipment you make to launch them. If any of this sounds interesting, and you are an adult, I highly recommend trying, BUT FIRST: you need to read at least a couple books on the subject, find a large unused field, and buy some very long hoses, wires, strings, etc so you can be far away (like 50m) from the action before before pressurising anything, filling anything with flammable gas, etc ***

The sound of the bounce is SO satisfying for some reason xD Also, launching anything perfectly vertically when there is no wind is WAY too much courage, specially near your own car.

Brilliant slo-mo video, a fine and totally absurd concept, and smartass commentary, especially the Taylor Swift-shape fins. All in one video. Very satisfying indeed. Subscribed!

You know, the other day I was worried that I had watched the last video you were going to make… I’m glad to see that you are still at it, and as fun and funny as always!

As a complete newbie to your channel, I found this video immensely therapeutic. Laughter IS the best medicine!

Science, rocketry and comedy. RU-vid knows what I like. Subscribed!

The goofy 🍑 commentary is still the best part of this SuperVinlin

This is what I'd do (I use to play with rockets and have messed with airplanes my entire life) - Make the fins out of balsa wood (stiffer & lighter) - use a glue like epoxy or E-6000 (do NOT use hot glue) - make the fins larger - use 4 fins vs. 3 fins

That bit with the pringles cans causing the accident had me in tears 😂 Well done mate, well done.

I love the commentary during the video. The dry humor and sarcasm is great

Tried this in the States. Am now on every three letter agencies watchlist.

A weighted nose to preserve momentum and slightly angling the fins to give it a spin for stability can make a huge difference. I learned this from pressurized water rockets.

Yay, you're back!!! 🫶 love your videos

🤣I'm also a dad who never grew up & our two daughters has the same dna...we are constantly teaching our grands how to create wild and wacky fun along the way...the possibilities are endless 😛

A couple of years ago my grandson and I made and launched several Pringle can rockets with traditional model rocket motors. Three or four cans joined together with a foam insulation nose cone, and an old umbrella for a recovery parachute. Good fun!😊

. In the 40's 50's 60's and up to 1974, my father worked in the apparatus and optical division of Eastman Kodak Co. in Rochester New York as an electromechanical tech. His job was working on government defense projects, NOT involved with cameras as he was strongly allergic to photographic chemicals. On one job, engineers needed foam rubber shock mounts with as close to a perfect 1/2 hole through the middle as one could get. They tried hot rods, hot wires, coping saw blades, coping saw blades sharpened to a razor edge on the back side and surgical scalpels. They were going crazy with this problem. They took one to my father, gave him the specs and asked his opinion. He said, "Give me a couple of hours." and he thought on the problem. Two hours later, he took the shock mount back to them with a perfect 1/2 inch hole through the middle of it. After picking their jaws up off the floor, they asked him how he did it. He dumped the coffee out of his lunch thermos bottle, went to the local gas supply company and got a thermos full of liquid nitrogen. He went back to work, poured the liquid nitrogen into a can and dipped the foam into the cold liquid for a minute or two. When he pulled it out with tongs, the cold had condensed the gas bubbles in the foam which made his sample almost flat. Before it warmed up, he took the foam to a drill press loaded with a 1/2 inch bit and proceeded to drill a 1/2 inch hole into it like it was a piece of thin wood paneling. Just goes to show you that you don't have to have an engineering degree to have good ideas.

You can make a nose cone easily by cutting a plastic wineglass at the stem and sanding the left over stump.

Thanks ive been having a rough week, but your accent added to your humor did wonders for my mood.

Professional stay at home dad here, kids LOVE rockets. I challenge you to fill that pringles can with some cheap sugar/potassium nitrate solid state propellant and film it landing on the moon 12 minutes later. Nobody will have a bad time. Subbed!

Thanks for reminding me of the stupid rocket-related experiments I did during my 1st year of high school. Time to get back into this stuff.

Built rockets with my sons in the early eighties. WHERE you put fins matters? : ) nose cone assembies as well. Thanks for the laughs & the memories. I shared it with my oldest in Germany & here's my FAT thumb up for all the effort.

That was fun to watch and your commentary was hilarious. Brilliant!

In the early 80s we have Pringles tennis ball cannon fight. A small hole and a drop of cologne. Strike a match and rumble!

I am never ever let down to find you in my feed. Thank you for existing and letting us get to take part. I'll cook ya a burger if you're ever in AZ!

Awesome video, glad to see you are back!

It's the comedy that keeps me watching

Not even 2min into the video, and i have had the best start this Sunday morning 😂😂! Keep up the good work!

😂😂😂 the hospital hose killed me

The bottles are terrible at flying because they get drunk. 🤪

The creativity in your construction designs is great lol. I would not have thought to send the flame down the tube and used something more like a potato cannon but this design is fun

Great exercise! Really good humor too. 😂

Been waiting patiently finally the day is here, can't wait, love your content

strange question.... LETS FIGURE IT OUT

I love watching videos made by people who don't know what they are talking about yet are more than willing to humiliate themselves in epic fashion anyway. 😊

The bouncy cup, and the electricity glue gun got me!

love your videos!! welcome back

Rocket go pam

@1:30 HAHAHAAH, man I dunno what they were using that hose on for a catheter but I don't wanna goto that hospital JAM

I've been building weapons like this for years! The hardest part is keeping him going straight up when you don't want them to come back down 😂. Also human rockets have been around for years and the first one flew in the 70s. The first jet packs were actually aluminum catalyst hydrogen peroxide rocket packs. We have finally reached the point of technology where real jetpacks are a thing. We even just had our first jetpack races in Dubai this year. It was quite spectacular seeing five jetpack racers on the same course at the same time catching each other's jetwash. Again, the easiest way to make a rocket pack would be highly purified hydrogen peroxide sprayed across an aluminum catalyst pack. The same way the rocket man flew during the Olympics in the 70s and 80s.

Finally!

Am I the only one who was more worried for the car than the adults and kids... Sorry...

I like your wry humor and ingenuity.

Way more fun than my usual bouncing cup 😂 classic!!

Fun video. You desperately need a 3D printer.

Very well done. Thank you for all the work you invested

Last week, I was going through all the channels I subscribed to and came across yours. I watched the last one from a few years ago and wondered where you went. Then this one pops up. Glad you're back!

Brother, I came for the experiment and stayed for the comedy. I totally lol'd multiple times. Rip In Pieces 'bouncing cup'.😂

I liked many times and subscribed to your channels. Your facetious remarks are hilarious. We all need a good laugh given the times. Love your cat deterrent contraptions.

HAHhAHHHaHHAHhHAHAHHA. Had no idea what type of comedy show I was about to watch. Loved it. 10 out of 10.

Your videos are ALWAYS welcome! They are hilarious!

Yay, a new Turnah81 video! I love this guy, his videos are hilarious! Craig, I found your videos a couple of years ago when I was attempting to make a hotwire foam cutter. Your video was both sidesplitting and actually informative. I used the rough idea from that video and made a pretty decent version of my own and I've been subscribed ever since. Good luck to you Craig, I hope you find massive success. You deserve it.

One of the most informative and funniest things I've watched in ages, well done sir.

I was going to subscribe anyway but that shot you did with the Pringles rocket hitting the car... Dude, that was incredibly funny.

A 1`friend of mine used to shoot tennis balls out of tennis ball cans via propane. Make a small hole near the base, fill the can with propane, add ball, add fire to the hole, and boom! The ball flies with surprising velocity and force. Can you combine Pringles with tennis balls in tennis cans sitting on top of the Pringles? Bingo, a two stage rocket! Probably there's a better combination than Pringles and tennis ball cans -- you're a smart guy.

The best fin for your bottle rocket is a Ring Fin. Made from the cylindrical section of another bottle and attached behind the rocket with rods or skewers

"This Bike? Not a rocket! But if you put a bottle on it, it's a Rocket!" Made me laugh!

In Rocket testing... "Where the hell did it go?" is always a good sign!

You honestly made me laugh out loud with your normal bouncing cup 😂

I always watch everything in 2x on youtube and when I saw the dash cam footage I was legit scared lmao. It was so real!

I felt that back porch moment in my soul haha!

Man! Those flame ignition effects belong in sci-fi movies! They are gorgeous and whip any CGI crap!

Craig, you might consult with a countryman of yours, who has quite the obsession with rocketry. His channel is "Air Command Rockets". He uses air/water rather than flame. Just really, really, really highly pressurized, so the danger is still there.

I love the sound a Pringles can makes when it bonks on stuff.

We were doing this in the '70s. Tape three Coke cake together with the tops and bottoms cut out (except for the bottom of the lower can, which had a hole poked in the side), a squirt of lighter fluid around the inside top, Pringle's can slid over them, and light the hole. We rarely bothered with fins and nosecones. Back then, Coke can tops and bottoms could be easily removed with a can opener.

I think I’m going to give this a shot too! I’ve got most of the tools minus the torch😂

Omg, I just went to realize I knew you from wayyyy before, when you published the « Next level cat repellent system » XD Nothing has changed, you're still amazingly funny to watch ! 😂😂😂😂

That "accident" was hairy-larious. 😂

I love your commentary. I haven't laughed that hard in a while.

Love you're sence of humour, brilliant...oh also the highest order of presentation.😂😂

You should try taping a metal washer to the front end of the 2 liter rocket. Keeps the CG in the right place and has some momentum

Also, there's a major difference in yellow can and blue can. Please be careful because yellow can is map and burns a lot hotter. There used to be a separate ingredient in there that they've taken out and that's why the name has changed from a double p to a single p. Essentially there are additives in the yellow can that causes the flame and the heat to adhere to things more readily. Things get hotter faster with a yellow can and it burns a little bit less clean. It will leave a little bit extra soot build up. It's more fun if you use hydrogen though.

Crazy good shots mate, well done!

Polystyrene or even expanding foam (like window sealer) would likely be a far better nose cone material as it's far lighter though hard coating it would likely be a must. Though shaping polystyrene without a hot wire cutter can be a serious pain. Speaking of pain.. I feel yours, I sanded into the bed of my thumbnail on a 24 inch disc sander in high school while trying to make headstones for Warhammer.

10:42 🤣 🤣 I've missed your uploads... thanks for coming back from the dead

My friends from 1973 until 1976 used to use tennis ball cans stacked together to make a tennis ball mortar, powered by bic lighter butane gas in a small hole at the bottom.