DIY Rocket Powered by BB Gun Cartridge

[@jgkwiatek]

Hi Drew. I'd like to share why this rocket design tumbles out of control rather than fly in a straight trajectory. It has to do with the center of gravity and center of pressure. The way that this rocket is designed, the CG is behind the CP, which causes the rocket to want to spin around the CG as it is propelled. For a rocket to be stable, the CG should be in front of the CP by a distance larger than the diameter of the body at its largest diameter. The simplest way to move the CG forward is to add weight to the nose cone. The simplest way to move the CP backward is to have fins with larger surface area. Besides these recommendations, I'd suggest using a single CO2 cartridge to start with, and then experiment with clusters of two and three. Best wishes, John.

[@invictus3598]

A lot of labor for a few seconds of pure joy. But, I would say it was worth it! Terrific! Thank you for sharing!

[@wildbill23c]

Great concept. A few more tweaks and weight in the nose and it'll fly better. I used to have a space shuttle model that would launch using those Estes rocket engines, had a lot of fun with it till I launched it one day and wind carried it out to the highway where it got hit by a semi-truck and poof it was gone LOL. Something like this would be a good father/son shop time experience for many I think. I have a CO2 bicycle tire inflator, they pack quite the power...enough to fully inflate both tires on my bicycle.

[@jean-pierrescherer8250]

I like the launching mechanism and the co2 cartridge usage, the rest could easily be improved but i like the approach very much!!!!

[@DrewBuildsStuff]

Thank you! Yes it was a starting place, could use some improvements for sure!

[@c.lalrinkimaclassxrollno-2172]

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[@c.lalrinkimaclassxrollno-2172]

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[@prime8071]

Napoleon once said "Imagination rules the world." Just amazing! Big congrats! Thank you for sharing!

[@wgamertvwgtv9068]

Fun fact: the Saturn V was designed, and manufactured in the Great State of Alabama! My State. I'm 19, from B'ham, AL. Cheers, Buddy! Nice work. 🇺🇸

[@odgreenshq6221]

pro tip from airsoft ,Co2 gas blow back airsoft guns lose pressure in winter due to the fact that Co2 loses pressure in colder environments ,do this same test in the dead of summer and the results will be way better.

[@Squirel234]

I was thinking about making a rocket and thought co2 would be a great fuel source so I searched it up and saw this video it's a good build and an amazing video thanks for letting me know it's possible as well.

[@DrewBuildsStuff]

Thanks for watching! It will work for sure, with a few improvements on this model it would have worked pretty good

[@tabascoraremaster1]

Nice try. As an advice I'd recommend balsa wood for the wings. #3 wings will work fine. Make them a bit taller so their base so they are standing out a bit further. Light weight and thin so it does not have so much resistance and does not make it go in all directions instead of straight up. Also I should make the tube some what longer. Just a straight cilindrical one with pointy head will do fine.

[@enzoocampoiii2881]

Genius! I might do this cuz i saw co2 canisters in a baking shop and i did not know it was that cheap.

[@simonabunker]

As everyone is saying - you need some nose weight. Just adding some modelling clay might be enough. You could probably cut quite a bit of weight by only having the engine mount and nose foam, and using cardboard body tubes. But I do get that you were going for the aesthetic look and foam would make it practically indestructible! Nice build!

[@stirlingpickett5253]

That was truly amazing you were really creative in building your Saturn V thanks for sharing this with us

[@criollocustoms]

You can improve max. altitude by adding some nose weight. Notice that the center of gravity is too close to the tail fins. You can see it when landing, vehicle touches the ground with it's tail, when its soposed to fall nose diveing. Nice experiment.

[@DrewBuildsStuff]

Ya for sure, was a bit of an experiment. If the video ever becomes popular I’d likely do a remake

[@criollocustoms]

@@DrewBuildsStuff It's a great idea to use co2 catridges, you've inspired me hahaha

[@projectdecent9968]

tbh I'm surprised you did not get more likes.

[@Noxterity]

Yea me too

[@tank_driver7776]

Would be cool if we could see the dislikes 😒😒😒😒😒

[@markaemerson]

With conventional model rockets we always attempt to have the center of gravity at least one body diameter in front of the center of pressure. You need nose weight or bigger fins.

[@jessicafaulkner8017]

You are so talented I love watching your videos!

[@lukekao8136]

that is so cool! thums up!

[@Dr.Gunsmith]

Great stuff

[@DrewBuildsStuff]

Thank you! Has some room for improvement but was still fun

[@tabascoraremaster1]

@@DrewBuildsStuff See my comment above.

[@phantomplayz7952]

I remember working with my dad and while using one of those canisters for a blowout gun I had this idea

[@Farmer_Gage7120]

Cool rocket🚀

[@TinyHouseHomestead]

WAIT! Improper CG and NO PARACHUTE! 😁😱🤪🤣👍👍🇺🇸

[@YusufFirdausBrainwash]

You are sick dude 🥰 , I love all what you have build, I'm your new fans from Indonesia 🇮🇩

[@petten33]

Youre like Elon Musk. He also reuses his rockets. Happy to subscribe. This looks like fun.

[@lynapidblog7707]

Amazing work my friend

[@jasontheripperjohntheripper]

good rocket!

[@Ezduztube]

Nice video 👍🏻

[@SmilingDevil]

Nice build, I made a water rocket launcher with the same amount of fun factor, yet (as suggested before) look into COG and Pont of attack for wind resistance of your build, The COG should be ahead of the wind resistance attack point to fly straight (but then It‘ll land nose first, maybe this isn‘t too much appreciated…)

[@abeltowin10]

You have to lower the nails I. The first 2 punctures so that all 4 puncture at the same time that’s why it’s curving

[@ViridianIsland]

Should go on the Safety Third podcast for sure

[@DrewBuildsStuff]

😬

[@onedangerousmanreacts]

Bro does everything with 10x the precision and patience I do lol

[@05carsm]

That was fun

[@johnepperson8867]

WOW !!! That was a brilliant design, the rocket & the launcher. One of your fellow Canadians will be giving you a call, REAL SOON, his first name is Elon. Thanks for the interesting video.

[@DanangAlta]

awesome sauce

[@rocketry1000]

Needs way more nose weight to get the cg in front of the cp and achieve stable flight.

[@pizzainc.1465]

Put some thrust limiting nozzles on those things, and put in some nitrogen (maybe through the straw) to really make it go boom.

[@dzjavat]

Hi ! What is that pink foam called ? What type of foam is it ?

[@gumpysee3644]

just foun you buy accident . love your stuff mate

[@DrewBuildsStuff]

Thanks Paul, appreciate it!

[@JennieDubya]

This is awesome! Do you have building instructions for the launchpad assembly?

[@lukekao8136]

nuild an ironman suite from a box of scraps. lol

[@Andy_Underwood...]

Would if fly better with weight in the front?

[@DrewBuildsStuff]

Hard to say, i didnt expect it to have as much thrust as it did so I think just some better fins/aerodynamics

[@mikemiller8170]

Yes - you need more weight in the nose come. Look up center of gravity vs. center of balance re. model rocketry. Ask me how I know...

[@tabascoraremaster1]

@@mikemiller8170 True.

[@OnTheRiver66]

@@mikemiller8170 Yes, the Action Lab just released a video on this.

[@kenanderson2002]

trim your fins to be more aerodynamic and give one side of each fin just a bit more girth. You want the rocket to spin to take advantage of centripetal force

[@madebydimiakagreekmachine5822]

awesome I was wondering how you would puncture them

[@OnTheRiver66]

I missed that too. Look at 4:58 - a spring loaded piece of wood with 4 nails at the precise location.

[@RogierYou]

Not showing how you released the pressure to lift off

[@Theguyinthe]

If you launched it in the summertime The CO2 canisters would have more power.

[@DrewBuildsStuff]

Good call, never really thought about that! I’ll have to try it out again soon

[@zovisapphire]

is that because the atmosphere would be less dense in the summerheat? aka CO2 pressure VS atmo is higher?

[@ryanhodgson2587]

@@DrewBuildsStuff This applies with co2 powered guns. Lots more shots out of a warmer canister. Just keep them in your pocket to keep them at body temp.

[@WhatDadIsUpTo]

I built a similar rocket using an aluminum tube with a "dip tube" held 1/4" away from the inside of the tip cone, 1/2-filled with liquid propane and held against a rubber seal with a yoke, which was attached to a "launch" string. It had 3 aluminum fins heliarced to the base and went up about a mile, but DON'T try this, because radar picks it up as a possible weapon.

[@Dr.Gunsmith]

NASA has their eye on you 😂

[@DrewBuildsStuff]

🤫

[@fls360]

I went to MSFC and helped them to sharpen their launch spikes and re tensioned their spike strike springs.

[@sonofstinkfoot9551]

CENTER OF GRAVITY IS TO FAR BACK, THATS WHY AFTER LIFT OFF IT STARTS CART WHEELING ITS ASS HEAY FIND THE CENTER OF GRAVITY AN SHE'LL DO WAY BETTER!. COOL VIDEO EITHER WAY!. .L.O.L..

[@itsmrhunter]

GENIUS

[@itsmrhunter]

MOVE OVER ELLEN MUSK

[@gooberclese]

Add nose weight...not a lot a little will do....it will go high and straight

[@Bon0z]

front head is so light

[@DrewBuildsStuff]

Ya it has a few design flaws, didnt think the co2 would even be able to lift it to be honest

[@ryangoodluck3540]

Make it a little more heavy.

[@lulurose6538]

2 grand!? 🤯

[@YkSeven]

6:35 Better than spacex! hahahahahahahaha

[@pbr2805]

You need balance weight in the nose!!!!!!!!!!!

[@billysbains]

maybe its way too lite

[@photosbyspeed]

What don’t you do?!

[@grant8653]

Should have painted it to look like a Black Brant. Only indigenous Canadian space agency rocket.

[@n0b0pygamer38]

Comment #51

[@RexSkittles]

Just think of how much CO2 you just released into the environment!! It was trapped in the cartridges and away from the environment and you let it into the atmosphere to pollute!!!

[@howardharaway2259]

Why not try filling those cartridges with sugar rocket fuel instead of using c O2. Another thing why did you do this in the winter time when you need the warm CO2 cartridges to work more efficiently

[@beck645]

Ok so you won’t win any rocketry contest with that but it was a lot of fun. Maybe stick to dog houses where you really shine! Thumbs up!