Relationshipware StratoLauncher IV Water Rocket Launcher + StratoFins Kit : �鶹��.ca: Toys & Games

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StratoLauncher IV Standard Water Rocket KitRelationshipware LLC

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Relationshipware StratoLauncher IV Water Rocket Launcher + StratoFins Kit

Brand: Relationshipware

180 ratings

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About this item

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 (237 ml) of water.
Kit includes our Gen 4 StratoLauncher + StratoFins (screw-on water rocket fins) + fill funnel. Watch assembly video.
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, 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.

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Product information

Technical Details

Product Dimensions	‎20.32 x 17.78 x 25.4 cm; 907.18 g
Item model number	‎LCR-5
Is discontinued by manufacturer	‎No
Age Range	‎Kid
Colour	‎Black
Style	‎Modern
Material	‎Aluminum, Brass, Plastic, Metal
Number of Items	‎1
Number of Pieces	‎18
Power Source	‎Manual
Special Features	‎Portable
Included Components	‎StratoLauncher Gen 4, StratoFins, Water Filling Funnel
Batteries Included?	‎No
Brand	‎Relationshipware
Item Weight	‎907 g

Additional Information

ASIN	B071LRLBX9
Customer Reviews	180 ratings 4.2 out of 5 stars
�鶹�� Rank	#51,850 in Toys & Games (See Top 100 in Toys & Games) #4 in Model Rocket Kits
Date First Available	June 27 2017
Manufacturer	Relationshipware

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This item: Relationshipware StratoLauncher IV Water Rocket Launcher + StratoFins Kit

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StratoFins Screw-on Water Rocket Fins - Compatible with 2 Liter Bottles or Smaller

$17.00

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Relationshipware StratoChute 24" Red Rip-Stop Nylon Parachute for Water or Model Rocket

$28.00

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Relationshipware StratoLauncher IV Deluxe Tilting Water Rocket Launcher + StratoFins Kit

5 offers from $128.00

Product Description

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.

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 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.

Expandable System

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.

If you ever conduct a large event that requires several launchers functioning together to get through a large field of participants in a short and safe period of time using a single air source (air compressor, bicycle pump, or scuba tank) and a single water source (garden hose or tank sprayer).

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

Important information

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.

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Customer reviews

180 global ratings

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Louis D
Impressionnant!
Reviewed in Canada on April 6, 2021
Verified Purchase

Instructions faciles à suivre, pièces de qualité et résultat franchement impressionnants du premier coup.
Attention aux journées venteuses! La fusée va vraiment très haut et si vous utilisez le parachute, elle peut facilement se retrouver à plus de 500 m de sa rampe de lancement et atterrir sur un toit de maison ou dans un arbre.

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D Seibel
Works so well
Reviewed in Canada on January 22, 2021
Verified Purchase
Bought it for a school project. Very sturdy and will use it for years to come

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Chris
Cool toy!
Reviewed in Canada on January 2, 2025
Verified Purchase
Exactly as pictured, works well. Can be finicky when launched. Fins do break on landing if instructions not followed.

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Top reviews from other countries

wintermute
Literally a blast...
Reviewed in the United States on July 9, 2024
Verified Purchase

This is a very nice, high-quality set. It's a bit pricey, so I held off purchasing this for quite some time, but with the recent hot weather, this is a great treat for playing at the park with my son. The video directions could use a slight correction since the release cable was a bit tricky to attach they way it was shown... it was much easier to attach the cable on the base end first and then to the hand caliper. Also, the release cable holder on the base was also pre-attached upside down, so that had to be reattached properly using a tiny hex wrench. Otherwise, a very nice high-quality water rocket launcher. Our maiden launch at 90 PSI took our 1-liter bottle to amazing heights... we almost lost our rocket since we weren't in a large enough space for recovery. Make sure you only use this in a very large, wide open space such as a large park or field. Fun to watch for kids 5 and up. This is a great toy and can be educational for older kids 12 and up if you discuss the principles of propulsion and use some simple tools to calculate the height at apogee. NASA has a nice little website where you can print-out materials to create tools to do just that. Due to the higher air pressures this kit can attain, it is best actually operated by older kids 13+ under adult supervision or by adults. Have fun!

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Ken S
Solid, reliable, and safe
Reviewed in the United States on March 8, 2025
Verified Purchase
This is a blast. Get a battery operated pump and have at it all day. Safe for kids and great fun for all.

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David Price
This thing is super cool.
Reviewed in the United States on August 19, 2020
Verified Purchase
Maybe it's not a kid's toy, but it sure was fun for all of us. I will say that taking the time to make a decent parachute or 2 will help preserve the fins. Or buy a parachute for a big estes model rocket. We made our own nose cones, out of poster board, in stead of another bottle. This made it fly straight and High. The poster board also allows the nose cone to easily separate, releasing the parachute. If you are able to find your way 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.

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S
Very fun kit but fins break easily
Reviewed in the United States on November 14, 2021
Verified Purchase
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 from the center of a soccer field and had it land in someone’s yard due to my wind velocity undercalculation. My only complaint is the fins break easily upon impact with the ground. I keep supergluing them back together which lasts a few launches and then the same spot breaks off again. Worth ordering an extra set of fins.

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Brandy McKeague
Poor craftsmanship
Reviewed in the United States on December 3, 2024
Verified Purchase
This is my second rocket launcher. The first one was excellent. Unfortunately, I moved classrooms several times over the past year and misplaced it. I purchased this new one for my SECME club. Assembly was a challenge because it didn't ever feel like the threading was quite right. The screw for the base cannot be tightened all the way, so it spins. Next, I had trouble getting the cable to attach. After watching their trouble shooting video, I realized they had mounted the screw on cable lock upside down, which was why the cable was short. Finally having that connected, I couldn't get the clamp on cable stop to stay in place. If I tightened it, the hose Q release wouldn't move. If I loosened it, it would just slip down. There was no "sweet spot". I am so disappointed because I know how great this launcher could be and my students would have loved it!

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