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Sold by: Relationshipware LLC
Sold by: Relationshipware LLC
(575 ratings)
97% positive over lifetime
Shipping rates and Return policy

StratoLauncher IV Water Rocket Launcher + StratoFins

4.3 4.3 out of 5 stars 176 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
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Purchase options and add-ons

  • Easy to assemble metal water rocket launcher with a 125 PSI safety valve. Rocket will NOT fly straight without an aerodynamic nose cone made from a second soda bottle and use only 1 cup (200 ml) of water.
  • Kit includes our Gen 4 StratoLauncher + StratoFins (screw-on water rocket fins) + fill funnel. Watch assembly video on this listing at the end of the pictures.
  • StratoLauncher IV will propel a 2 liter plastic (PET) soda pop bottle over 350 ft. in the sky. Watch the last minute of the assembly video for launch procedure.
  • Supports most .5L, 1L, 1.25L, 1.5L, 2L soda bottles @ air pressures as low as 15 PSI up to 120 PSI.
  • Kit is fully upgradeable, expandable, & can be accessorized into a complete launching system for STEM.

Additional Details

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Product information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Relationshipware StratoLauncher IV Water Rocket Launcher + StratoFins


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Important information

Safety Information

Operate StratoLauncher with extreme care and only under adult supervision. Relationshipware LLC and its members are NOT RESPONSIBLE for any injury or loss of property to any person suffered while operating our StratoLauncher IV with or without our StratoFins.

Legal Disclaimer

Operate StratoLauncher with extreme care and only under adult supervision. Relationshipware LLC and its members are NOT RESPONSIBLE for any injury or loss of property to any person suffered while operating our StratoLauncher IV with or without our StratoFins.


Product Description

StratoLauncher IV is available in 3 models: Standard, Deluxe, and Ultimate

Available in 3 Models

Our StratoLauncher IV, water rocket launcher is available in 3 models: Standard, Deluxe, and Ultimate. All of them perform the same and can be upgraded to add additional features and all come with a 125 PSI safety valve to prevent exploding bottles while pressurizing.

  • Standard - plastic quick connector, no pressure gauge, does not tilt
  • Deluxe - metal quick connector, air pressure gauge, tilting ball head
  • Ultimate - same as Deluxe plus Q-connect water fill system made of 4 parts to connect a tank sprayer

Our complete launcher kits will enable you to propel a 2-liter plastic (PET*) soda pop bottle over 350 ft. into the sky using only water and compressed air from a bicycle pump or an air compressor.

View the 3 videos for this listing that cover benefits, assembly, and launch procedure.

StratoLauncher IV Standard nozzle efficiency

Nozzle Efficiency

Requires only 200 ml or less of water to launch a 2-liter soda bottle from the StratoLauncher IV. This means carrying less water onto the field. Also, it functions very well with Air Only. More water can be used, but that will require a rail system or a narrow diameter rocket like an FTC (fluorescent tube cover) rocket.

nozzle enables launching various size bottles, glider, rocket car, and FTC rocket

Nozzle Versatility

Supports 5 different soda bottle sizes (0.5L, 1L 1.25L, 1.5L and 2L) @ air pressures as low as 15 PSI up to 120 PSI. Plus, launch homemade rockets, spliced versions, FTC rockets, gliders, and rocket cars. Although our StratoFins yield the best results, the StratoLauncher IV was designed to enable students and family members to create their own fin and rocket designs that will work merely by screwing on the black nozzle.

Connect 2 or more Ultimate for classes or STEM events

Expandable

Connect several StratoLauncher IV units together for large classes or STEM events. Fuel with a single water source (tank sprayer or garden hose) and pressurize with a single air source (bicycle pump, air compressor, or scuba tank) to get through a large field of participants in a short and safe period of time.

StratoLauncher IV is upgradeable

Upgradeable

Several upgrades are available to enhance your StratoLauncher IV water rocket launcher.

  • Deluxe Upgrade
  • Ultimate Upgrade
  • 10 ft. Hose Extension
  • 10 ft. Compressor Connect
  • 48 in. Rail System

Product guides and documents

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Customer reviews

4.3 out of 5 stars
4.3 out of 5
176 global ratings

Customers say

Customers like the quality, fun, and height of the non riding toy vehicle. For example, they mention it performs great, it's exciting, and it goes very high. Some disagree on ease of assembly.

AI-generated from the text of customer reviews

38 customers mention28 positive10 negative

Customers like the quality of the toy vehicle. They say it performs well, the launcher works well, and produces amazing results. The launch platform is also good and the product is well-engineered.

"This rocket launcher is so cool. I bought it as a gift for my nephews a couple years ago but I realized they were too young for it at the time...." Read more

"...Great product, great fun, and great support!!!" Read more

"Worked better than expected. Relatively easy to assemble and launch. Took off over 200 feet! Durable and reusable...." Read more

"...I didn't even read the instructions, and it worked perfectly." Read more

19 customers mention19 positive0 negative

Customers find the non riding toy vehicle to be a great amount of fun. They say it's a fun project for the science fair, exciting, and great for activities. Some customers also mention that the launch is sooo much fun.

"...The launch is sooooo much fun. We launched it for hours with the neighbor kids and each time was so great...." Read more

"...Great product, great fun, and great support!!!" Read more

"Maybe it's not a kid's toy, but it sure was fun for all of us...." Read more

"...Its is super fun for the kids..." Read more

7 customers mention7 positive0 negative

Customers are satisfied with the height of the toy vehicle. For example, they mention it goes very high, nearly out of sight, quickly, and achieves the advertised height when pumped to 125 psi. Some say it takes off over 200 feet.

"...so the rocket want land on a neighbors house or car, as it goes up very high...." Read more

"...Relatively easy to assemble and launch. Took off over 200 feet! Durable and reusable...." Read more

"This is well built and goes insanely high. It’s a blast and a workout if pumping manually...." Read more

"This thing is a blast to launch. It goes so high you need to be careful with the winds at higher altitude because I’ve launched this straight up..." Read more

11 customers mention6 positive5 negative

Customers are mixed about the ease of assembly of the toy vehicle. Some mention that it works better than expected, is relatively easy to assemble and launch, and makes launching super easy and safe. However, others say that it came with absolutely no instructions.

"...I'm handy so putting it together was a breeze...." Read more

"...Watching the YouTube video is super helpful. It doesn’t come with instructions but rather you can scan the QR code on the box and it takes you to a..." Read more

"...around a tool box, and basic home repairs, then this will be easy to put together. I didn't even read the instructions, and it worked perfectly." Read more

"...It also came with no instructions. You had to go online for them. I don't know why they couldn't put a simple piece of paper in the box...." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the air leakage of the toy vehicle. They mention that it leaks at all of the fittings, making it difficult to keep.

"...Issues that I came across was it kept leaking at all of the fittings which made it difficult to keep pressure...." Read more

"...that you need to buy a bicycle pump so that’s an added expense also it leaks air so they don’t fly very high." Read more

"The launcher is incapable of functioning due to air leaking where the nozzle locks. Any air that is pumped into the launcher leaves immediately...." Read more

Broke after 3rd use
1 Star
Broke after 3rd use
A fin broke after the 3rd launch when it landed on soft soil. My son was devastated as he had waited a couple weeks for this product as a reward he had earned. The first 3 launches were awesome. Not so much fun now.
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Reviewed in the United States on April 7, 2020
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Reviewed in the United States on May 21, 2021
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Reviewed in the United States on December 13, 2020
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1.0 out of 5 stars Broke after 3rd use
Reviewed in the United States on December 13, 2020
A fin broke after the 3rd launch when it landed on soft soil. My son was devastated as he had waited a couple weeks for this product as a reward he had earned. The first 3 launches were awesome. Not so much fun now.
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Top reviews from other countries

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ALEJANDRO ROJAS
5.0 out of 5 stars Excelente
Reviewed in Mexico on March 29, 2023
Louis D
5.0 out of 5 stars Impressionnant!
Reviewed in Canada on April 6, 2021
D Seibel
5.0 out of 5 stars Works so well
Reviewed in Canada on January 22, 2021