World's LARGEST SUPER SOAKER!! (not clickbait)

Neighbor: Are you guys okay? Yeah When the super soaker was first invented, it was an absolute game changer in my neighborhood. So now that I'm a dad and I know how to engineer I decided to once again level up my water fighting capabilities with this. The Guinness World record holding Largest water gun ever at 7 feet long. As a follow-up, of course, to my world record largest nerf gun But, she doesn't just look good. So I'm going to show you how we made it, how she stacks up against the original Super Soaker and then we'll talk about the science behind how it works But first let's just take a moment to appreciate the destructive power of a stream of water traveling at 272 miles per hour Watermelons are great But I wanted to see how she would fare in a real water fight in addition to running some further tests but before we get into those Let's talk about how we made it and how it works Together with my buddy Bob and his glorious beard we created a skeleton for the gun in fact I won't show it here but if you want all the gory details On how to construct a large scale replica like this he uploaded a full video on his awesome YouTube Channel called I Like To Make Stuff I'll put a link in the video description and in the end after some EVA foam and a paint job We ended up here Let's take a look under the hood to see the design I arrived at with my buddy Ken the first thing The first thing you should notice is that most of the mass is down here in the handle not up here That's because having a low center of mass is really helpful for stability and maneuverability For something really large like this All the components you see here are just a fancier version of all the components that make up this gun It operates on the exact same principles, so let's start by talking about how this one works And to do that I figured We might as well ask the actual original inventor of the Super Soaker one of my personal engineering heroes, Lonnie Johnson of course one of my first questions to him was how he even came up with this idea I got the idea In 1982. I was at the Jet Propulsion Laboratory working on the Galileo Project at the time In fact, i was doing experiments in my home, in the bathroom, in the evening time I wanted to develop a heat pump that would use water as opposed to Freon. I had made these nozzles i had hooked up to the sink and as i shot the stream of water across the bathroom And I saw how powerful it was and how satisfying it was I felt some high pressure in a high performance water gun and it was really really cool As I talked more with Lonnie he showed me the very first prototype He ever built of the gun. We talked about some of the clever design elements. For example this tank here that holds the water Doubles as the pressure container so each time you pump you are forcing more and more air into this spot Which makes it more and more crowded with air molecules which increases the pressure and when you pull the trigger The air is pushing down on the water So hard the only place it can go is through this tube and out the gun and so this is why this tube is intentionally bent down like this because no matter which way you tilt the gun it's always going to be below the water line and therefore water will come out and Not air and so now in our case instead of pumping we fill this tank up with High-pressure nitrogen gas and then this tank is filled with about two gallons of water and just like the Super Soaker it has a tube that runs all the way down and is open at the bottom so then this gas is at a Really high pressure and it wants to get out so when you pull the trigger And open the flow it pushes down on the top of the water which forces it up this tube and out at 272 miles per hour and the Trigger is just this ball valve joint here but I thought it would be lame if every time you wanted to fire you had to turn some the handle so we have a Pneumatic piston here, that's also powered by the nitrogen And then we have a solenoid that's connected to some double-A batteries back there for power and so when you push this button it opens the ball valve and allows water to flow through Until I release the button. I'll put a link to the CAD files we made along with a build list of all the components we used in the video description if you want to make something similar Oh, one final cool feature is we have this cover here That's held on with rare-earth magnets, so after you've shot a bunch and need to refill the water and the gas You can just easily access the fill valves through this window here and now back to the gratuitous violence It's a double rainbow all the way For some context on the power of this gun the original Super Soaker was pressurized to 40 PSI And the pressure from the hose of your house is just a little more than around 50 PSI, a firetruck hose comes in at around six times that at 300 PSI and this beast is eight times the pressure of a firetruck at 2400 PSI which in hindsight is probably overkill One final really cool feature of the gun is you can swap out the nozzle depending on what you're shooting So this nozzle has a really small diameter opening which leads to a high stream velocity, but lower overall water output So it's good for cutting or puncturing stuff then this nozzle is basically wide open at a quarter-inch so it's a little lower Velocity but it's the maximum water output, so it's good for getting things drenched fast or breaking things with Force So now with the gun fully tested I wanted to see how we would do in an actual water fight, so we got together for a party with some family friends But to make things fair we took turns picking guns, but of course I got first pick So it worked awesome, and I completely destroyed them until I ran out of water It took us about six months to build this Super Soaker and it wouldn't have been possible without the support of the awesome folks at 23andme I just got my results back, and I will share them with you in just a second if you've never heard of them They send you this box and then you spit in this Tube and then you put it back in the mail And then they analyze the DNA in your chromosomes hence the name 23andme because humans have 23 pairs of chromosomes And then they tell you all sorts of really interesting stuff about you, so for example in my case. I learned I am 45% from Britain and Ireland and amazingly, I'm 3% Jewish. Shalom. I also learned I am more neanderthal than 96% of all 23andme customers They also predict some of your physical traits based on your DNA which was astonishingly accurate except this one was a little suspect Anyways, I thought it was so cool I got them as gifts for everyone in my family So if you want to learn more about what 23andme does or even better if you want to learn what your DNA says about you Or your friends and family you can use the link in the description or go to 23andme.com/MarkRober. Thanks for watching

Channel: Mark Rober

Views: 25,098,486

Rating: 4.7779355 out of 5

Keywords: Super soaker, lonnie johnson, mark rober, nasa, Guinness World Record, i like to make stuff, jpl, nerf, world's largest nerf gun, world's largest super soaker, water gun, water fight, water balloon, summer, high pressure, watermelon, fruit ninja, double rainbow, slow mo, high speed, diy, build, nerf gun, nerf war

Id: T1KRQ3RcvXA

Length: 9min 7sec (547 seconds)

Published: Tue Jul 11 2017