How To Make “Screw-Lock” Sugar Rockets

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Some quick links to a few of the materials I used:

Screw lock sugar rockets
[✓] 12” x 3/4” PVC sprinkler riser:
[✓] Spectricide stump remover:
[✓] Powdered sugar:
[✓] Uncented kitty litter:
[✓] Magic bullet:

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How To Make “Screw-Lock” Sugar Rockets that lock and load within seconds, and have a built in parachute ejection charge, so you can get your rockets back safely.

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Endcard Links:

Randomizer Rocket:
Simple Chutes:
N64 Rocket Controller:
Rocket Igniters:

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This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume the responsibility for the results. Although sugar rockets are the slowest burning of all rocket fuels, this project should not be attempted without adult supervision, proper permits, adequate training, and at a location far away from people, property, and anything flammable. Misuse, or careless use, of rocket propellants may result in serious injury, wildfire, and in extreme cases, death. Ignition of an incendiary or explosive material may not be legal in your area. Check local laws and inquire with local rocketry clubs on how to safely make and launch sugar rockets. Have fun, but always think ahead, and remember that every project you try is at YOUR OWN RISK.

Music By:

Scott & Brendo “Kitten Air” Instrumental

Project Inspired By:

A previous project on making Sugar Rockets ( I wanted a way to lock and load them into a homemade rocket, so they’d eject a parachute in a way that was light weight for the rocket, but still safe.

Project History & More Info:

I’m really excited to share my passion for building and launching rockets with completely home-made equipment. In my opinion, it’s the best way to learn about how rocketry really works.

In a previous project ( I made rocket motors using PVC, sugar, kitty litter, and stump remover.

They worked so well they made me want to design a rocket they could be used with, and my friend Ritchie Kinmont with was instrumental in making that project actually happen.

I made this tutorial to be a more comprehensive sugar motor tutorial, going over all the things you’d need to do to make a successful motor that will work with the “Randomizer” rocket, and addressing some of the issues and challenges I’ve faced in the past with failed attempts.

The ‘Screw-Lock” version features threaded PVC risers, that allow the motors to quickly be changed, for faster turn-around times, and they have built in ejection charges for popping out the parachute at apogee.

I played around with ejection charges in the “Redneck Rocketry” video (

I realize most people aren’t very excited by building rockets, but for those who are, I hope you feel the same sense of wonder and awe as I did in building this series.

Most rocket clubs won’t let you fly sugar motors, except on special experimental launch days. However, the “Randomizer” rocket can also be used with commercial “Estes” D12-3 and E9-6 black power motors. So if you go with those, there’s a good chance they’ll let you fly your rocket at any club launch.

The rocket can fly over 1,000 feet high, and depending on the winds, can stay in the air for around 5 minutes while it floats back to the ground, so it’s important to be super cautious where, and when, you launch to avoid doing any damage.

Rockets are not toys, and this video is mainly for educational and demonstrational purposes. If you’re going to attempt making a rocket yourself, I highly suggest you check local laws and inquire with local rocketry clubs on how to safely make and launch them.

50 thoughts on “How To Make “Screw-Lock” Sugar Rockets

  1. Using PVC is not recommended for a motor mount. It can fracture and explode due to over-pressurization. It can't handle the stress or pressure and PVC is not rated for this endeavor. Use aluminum, instead. Aluminum motor enclosures are STANDARD in mid to high power rocketry. NO ONE in their right mind who has actually STUDIED rocketry would EVER use PVC. King of Random not doing anyone any favors here. It's BAD science and Grant should know that by now. Dry mixing or "pounding" KN03 and table sugar isn't that effective. Melting is better and much more effective. I don't recommend SUCROSE but SORBITOL. Much safer and Impulse power much higher. Sugar motors NEED a cored area for the nozzle exhaust or it will just sit on launch pad and just smoke and go no where.

  2. 3:27 Grant, what if i use the "candy" fuel, the one with the cooked sugar and potassium nitrate? Will that work instead of the white mix?

  3. There is no E45 from what I understand. Anyone have a link? E class stops at 40 newtons of thrust and becomes F class. Did you mean E4-5 and just mis translate when making the script?

  4. Can you increase the "white mix" propellant section for a higher flight? Maybe make the delay section longer to compensate? Or are these specs calculated out specifically.

  5. How does parachute deployment work.
    The main fuel tank is way below the parachute …so how does the parachute even open?

  6. I'm doing this for educational purposes and the place I've selected isn't that large, how can I reduce the height of the rocket launched?

  7. Here in Australia, we can't buy that potassium nitrate Stump remover, also not sure about access to black powder. In Queensland we do not need a license to own an antique (manufactured before 1901) cap and ball firearm, not sure about ammunition and powder. Anyway you could make a rocket engine from general supplies found here in Australia? I would love to get into homemade rocketry.

    P.S. we do have sparklers, but I'm not sure about pressure performance from them ground up…

  8. So you’re saying u got a magicbullet blender for 5 bucks at a thrift shop. Geeze things are expensive in Australia 🇦🇺

  9. Will your next video will show us how to launch a Casper-the-Friendly-Mattress into LEO?
    How much White Mix does that require?

  10. So… can you reuse the pvc pipe to make a new rocket or is it damaged? Or how many times can you use it before it is damaged? Just wondering as this seems like a fun project. Also, if you used a cardboard like tube would it burn up or would it last long enough, because maybe it would be cheaper to make single use rockets that way.

  11. we mixed 65 gm of kno3 and 35 gm of sugar but not working !!!!!!
    Help me i need it for my project immediately
    if you could sell your sugar lock motors it great help (India)

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