--- product_id: 234695744 title: "Relationshipware StratoLauncher IV Deluxe Tilting Water Rocket Launcher + StratoFins Kit" brand: "relationshipware" price: "1016.57 DT" currency: TND in_stock: true reviews_count: 6 category: "Relationshipware" url: https://www.desertcart.tn/products/234695744-relationshipware-stratolauncher-iv-deluxe-tilting-water-rocket-launcher-stratofins-kit store_origin: TN region: Tunisia --- # Precision tilting ball head 350+ ft max flight 125 PSI safety valve Relationshipware StratoLauncher IV Deluxe Tilting Water Rocket Launcher + StratoFins Kit **Brand:** relationshipware **Price:** 1016.57 DT **Availability:** ✅ In Stock ## Summary > 🚀 Elevate your STEM game with every launch — don’t just watch the sky, own it! ## Quick Answers - **What is this?** Relationshipware StratoLauncher IV Deluxe Tilting Water Rocket Launcher + StratoFins Kit by relationshipware - **How much does it cost?** 1016.57 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/234695744-relationshipware-stratolauncher-iv-deluxe-tilting-water-rocket-launcher-stratofins-kit) ## Best For - relationshipware enthusiasts ## Why This Product - Trusted relationshipware brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built for Precision:** Tilting ball head and aerodynamic StratoFins ensure stable, straight rocket trajectories. - • **Effortless Assembly:** Includes alloy QRelease, fill funnel, and clear video tutorial for quick setup and launch. - • **Sky-High Launch Power:** Propels 2L soda bottles over 350 feet for epic backyard flights. - • **STEM-Ready & Expandable:** Fully upgradeable kit perfect for hands-on science, tech, engineering, and math learning. - • **Safety Meets Performance:** 125 PSI safety valve and pressure gauge keep launches controlled and secure. ## Overview The Relationshipware StratoLauncher IV Deluxe is a premium metal water rocket launcher designed for adults and STEM enthusiasts. Featuring a 125 PSI safety valve, precision tilting ball head, and aerodynamic StratoFins, it can launch 2-liter soda bottles over 350 feet. The kit is easy to assemble, supports multiple bottle sizes, and is fully upgradeable for advanced experiments and educational fun. ## Description Product description International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Safety Warning 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. Review: Unfortunately a very cool product has been let down by cheap plastic parts. - Unfortunately a very cool product has been let down by cheap plastic parts. Sadly after not many uses the joints of the fins have all snapped and rendered an otherwise really good product, completely useless. Review: Water Bottle Rocket - Works great but material could be a bit tougher as one fin broke off after about the 15 run....... ## Features - 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 StratoLauncher IV, StratoFins, tilting ball head, pressure gauge, alloy QRelease + fill funnel. Watch assembly video on this listing at the end of the pictures. - StratoLauncher IV Deluxe 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B071233ZB8 | | Age Range Description | Adult | | Age range (description) | Adult | | Best Sellers Rank | 141,228 in Toys & Games ( See Top 100 in Toys & Games ) 204 in Water Pistols | | Brand | Relationshipware | | Brand Name | Relationshipware | | Customer Reviews | 4.5 out of 5 stars 113 Reviews | | Educational Objective | STEM | | Included Components | Rocket Launcher | | Is Assembly Required | Yes | | Item Dimensions | 20.3 x 17.8 x 30.5 centimetres | | Item Weight | 1.25 kg | | Item dimensions L x W x H | 20.3 x 17.8 x 30.5 centimetres | | Item weight | 1.25 kg | | Manufacturer | Relationshipware | | Manufacturer Part Number | LCR-6 | | Manufacturer recommended age | 14 years and up | | Material Type | aluminum, stainless steel, brass, ABS plastic | | Number of Items | 1 | | Number of Packs | 1 | | Set Name | StratoLauncher IV Deluxe | | Size | Large | | Theme | Vehicle | | UPC | 700220319073 | | Unit Count | 1.0 count | ## Product Details - **Age range (description):** Adult - **Brand:** Relationshipware - **Item dimensions L x W x H:** 20.3 x 17.8 x 30.5 centimetres - **Size:** Large - **Theme:** Vehicle ## Images ![Relationshipware StratoLauncher IV Deluxe Tilting Water Rocket Launcher + StratoFins Kit - Image 1](https://m.media-amazon.com/images/I/617x6E2BVFL.jpg) ![Relationshipware StratoLauncher IV Deluxe Tilting Water Rocket Launcher + StratoFins Kit - Image 2](https://m.media-amazon.com/images/I/61EoFVyK7uL.jpg) ![Relationshipware StratoLauncher IV Deluxe Tilting Water Rocket Launcher + StratoFins Kit - Image 3](https://m.media-amazon.com/images/I/816HtZ-ONYL.jpg) ![Relationshipware StratoLauncher IV Deluxe Tilting Water Rocket Launcher + StratoFins Kit - Image 4](https://m.media-amazon.com/images/I/51qFKFrg0PL.jpg) ![Relationshipware StratoLauncher IV Deluxe Tilting Water Rocket Launcher + StratoFins Kit - Image 5](https://m.media-amazon.com/images/I/61DnMktVe5L.jpg) ## Questions & Answers **Q: Is there an optimal psi level?** A: No, there is not an optimal PSI level for the StratoLauncher IV. The range is 15 PSI to 120 PSI on all 3 models, Standard, Deluxe, and Ultimate. A lot depends on the size field you are launching on. The higher the PSI the larger the field needs to be especially if there is any wind (8 - 15 MPH) and you are using a parachute. Wind can cause a lot of drift and you might lose your rocket to a tree or not find it. Most people are happy in the 40 - 80 PSI range. At 100 - 120 PSI you are stressing the bottle a lot and it would need to be replaced more frequently as the stress points will eventually give way after a few dozen launches at that consistent high pressure. Below 100 PSI the bottle will last a long time. Also, if one is pressurizing with a bicycle pump you will get tired of pumping up to 100 PSI and higher over time. Pumping up to 40 - 80 PSI is not that much work. Most children will not be able to pump up much past 80 PSI and certainly not very often. One can have a lot of fun in the 40 - 80 PSI range because the rocket flies plenty high at those pressures and one can do it over and over without a lot of effort. This lower PSI range is also good when using a parachute because above 80 PSI you are apt to lose your parachute rocket if the winds are any higher than 4 MPH. I hope these comments and suggestions prove helpful to your. **Q: Where can I purchase additional nozzles?** A: Additional nozzles are available on our site https://www.stratofins.com Also, that information is available on the product box, online manuals, and the included business card. You will find a host of replacement parts and upgrade kits there as well. **Q: If I'm at the beach, can I use salt water?** A: Although salt water would work in the StratoLauncher IV, I would not recommend it because the salt water would be corrosive to the metal parts. Probably not a problem on the aluminum, but the other brass and metal parts would suffer and probably affect the air pressure gauge if it gets inside of there. Furthermore, the presence of sand many cause problems, because that stuff gets everywhere and would invariably cut away on plastic connections (nozzle) and may create leaks from abrasion or malfunctioning. I suppose if you were extremely careful and rinsed the nozzle before each insertion into the launcher and carefully rinsed the entire launcher with fresh water shortly after you left the beach you might get away with it, but I would not recommend it. An additional problem would be the flight itself. Generally beaches are windy places and these light water rockets prefer launching in less than 10 MPH (0 to 4 MPH is really ideal). Other than that beaches sound like a great place to launch given the wide open spaces probably without trees and potential soft landings on water or sand, but I think it is a recipe for shortening the life of the StratoLauncher IV. It will function without water using just air, but does not fly near as high, but once again the sand and wind are going to be issues at the beach where I don't think you will be pleased with the results. **Q: Not fitting onto Bike pump at all. How is this thing supposed up actually launch anything?!** A: All our StratoLauncher IV models come with a standard Schrader valve as one would find on most bicycle or car tires. Consequently a standard bike pump will fit our valve. If your bike pump only has a Presta valve as found on high pressure road bikes, then it will not fit the Schrader valve. Many bike pumps have a head for both types of valves. Per our assembly instructions the Schrader valve is normally located under the pressure gauge on the launcher body. Installing the pressure gauge at a 25 degree angle as we indicate can make it easier to attach a bike pump to the Schrader valve underneath it. If the head on you bike pump is too large to fit under the pressure gauge, then you might switch the Schrader and safety valve positions on the launcher body. If you are still having issues, please contact us directly via the email on the kit box or included business card. We will help resolve any issues. ## Customer Reviews ### ⭐ Unfortunately a very cool product has been let down by cheap plastic parts. *by M***Y on 25 December 2020* Unfortunately a very cool product has been let down by cheap plastic parts. Sadly after not many uses the joints of the fins have all snapped and rendered an otherwise really good product, completely useless. ### ⭐⭐⭐ Water Bottle Rocket *by B***H on 2 November 2019* Works great but material could be a bit tougher as one fin broke off after about the 15 run....... ### ⭐⭐⭐⭐⭐ Our grandkids love doing water rockets! *by A***B on 20 September 2026* Would you like to be an even more loved and adored grandma/grandpa? If you’d like to have fun with the children in your life, or your own inner child 🥳 order this high quality, durable, easy to use, well priced, engaging rocket launcher today. Grab a bottle of soda (best to pour it out to protect your health), gather your people, and head to a park. You’ll be entertained for hours and you might even make new friends who want in on the fun. This is so engaging! More water? Less water? No water? You could have fun for 20-30 minutes, or you could pack a picnic, grab lawn chairs, sun screen and people you love, and head out for a fun day out. We were introduced to this rocket launcher during a Memorial Day weekend when we camped with about 70 friends. One of the dads started launching rockets and he attracted and engaged about twenty children who all got involved in some way or another. Running after the bottle, climbing up a tree to retrieve it, wading out into the river when it was taken away by the wind…. Many adults were entertained by pulling up lawn chairs and watching the fun. Cheering, clapping, speculating, anticipating, trouble shooting… this rocket launcher is worth every penny for the amount of entertainment it provides to young to old participants and observers. ## Frequently Bought Together - Relationshipware StratoLauncher IV Deluxe Tilting Water Rocket Launcher + StratoFins Kit - StratoFins Screw-on Water Rocket Fins - Compatible with 2 Liter Bottles or Smaller - Relationshipware StratoChute 24" Red Rip-Stop Nylon Parachute for Water or Model Rocket --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/234695744-relationshipware-stratolauncher-iv-deluxe-tilting-water-rocket-launcher-stratofins-kit](https://www.desertcart.tn/products/234695744-relationshipware-stratolauncher-iv-deluxe-tilting-water-rocket-launcher-stratofins-kit) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-15*