---
product_id: 347073342
title: "StratoLauncher IV Water Rocket Launcher + StratoFins"
brand: "relationshipware"
price: "74635 Ft"
currency: HUF
in_stock: true
reviews_count: 5
category: "Relationshipware"
url: https://www.desertcart.hu/products/347073342-stratolauncher-iv-water-rocket-launcher-stratofins
store_origin: HU
region: Hungary
---

# 1 cup water per launch 350+ ft max altitude 125 PSI safety valve StratoLauncher IV Water Rocket Launcher + StratoFins

**Brand:** relationshipware
**Price:** 74635 Ft
**Availability:** ✅ In Stock

## Summary

> 🚀 Launch your curiosity skyward—because ordinary rockets just don’t cut it!

## Quick Answers

- **What is this?** StratoLauncher IV Water Rocket Launcher + StratoFins by relationshipware
- **How much does it cost?** 74635 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/347073342-stratolauncher-iv-water-rocket-launcher-stratofins)

## 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

- • **Sky-High Launch Power:** Propel 2L soda bottles over 350 feet with ease, turning your backyard into a launchpad for epic flights.
- • **Universal Compatibility:** Screw-on nozzle fits most 0.5L to 2L soda bottles, making it the ultimate versatile launcher.
- • **Precision Safety Control:** Built-in 125 PSI safety valve ensures worry-free pressurization and prevents bottle explosions.
- • **STEM-Ready & Upgradeable:** Expand your launcher with add-ons and accessories for a full STEM experience that grows with you.
- • **Water-Efficient Propulsion:** Only 1 cup (200 ml) of water needed per launch—maximize fun with minimal resources.

## Overview

The StratoLauncher IV is a premium water rocket launcher kit crafted from durable aluminum, stainless steel, brass, and ABS plastic. It features a 125 PSI safety valve and a unique screw-on nozzle compatible with most soda bottles from 0.5L to 2L. Using just 1 cup of water per launch, it can propel rockets over 350 feet high. The kit includes aerodynamic StratoFins and a collapsible fill funnel, with easy assembly guided by QR-coded video instructions. Designed for STEM learning and endless fun, it’s fully upgradeable and perfect for professionals and hobbyists seeking a thrilling, safe, and eco-friendly rocket launching experience.

## Description

Product description Our StratoLauncher IV kit includes a water rocket launcher made of aluminum, stainless steel, durable plastic, & brass parts, a set of StratoFins & collapsible water fill funnel. Assembly is quick & easy with no further adjustments required regardless if you use our StratoFins or your own homemade rocket or FTC (Fluorescent Tube Cover) rocket thanks to the screw-on nozzle. Employing a nozzle makes this a universal launcher for most any style water rocket and eliminates problems such as bottles not fitting over a launch tube, O-rings wearing out, or accidental launches due to falling collars. The restricted nozzle facilitates lift offs that are 3 – 6 times slower (depending on PSI) than typical water rocket launchers enabling you to see the blast off and yet the nozzle rocket will fly equal to or higher in altitude. Also, the nozzle requires only 1 cup of water per launch for optimum performance although you are free to experiment. StratoLauncher IV ships unassembled with a QR code on the box label that you can scan with your smartphone to view a PDF containing assembly instructions, launch procedures, upgrade kits, videos, and future accessories. NO additional materials are required for assembly, but you will need an adjustable wrench (or a 14mm wrench), 4 & 5mm hex wrench, & a Phillips head screwdriver. Our StratoLauncher IV will enable you to propel a 2 liter soda bottle over 350 ft. into the sky using only water and compressed air from a bicycle pump or an air compressor. Fuel (water & air) is essentially free and readily available allowing countless launches without additional expense. You control when the launch occurs by squeezing the black lever and releasing the lock at the end of the cable from a safe distance of 10 ft. and out of the splash zone. StratoLauncher IV comes in 3 models: Standard, Deluxe, and Ultimate. Any of them can be upgraded to add additional features and all come with a 125 PSI safety valve to prevent exploding bottles while pressurizing. Directions Included 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: Literally a blast...
Review: Impressionnant! - 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.

## 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 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071LRLBX9 |
| Age Range Description | Kid |
| Are Batteries Required | No |
| Batteries are Included | No |
| Best Sellers Rank | 288,759 in Toys & Games ( See Top 100 in Toys & Games ) 506 in Water Pistols |
| Brand Name | Relationshipware |
| Colour | Black |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.1 out of 5 stars 184 Reviews |
| Educational Objective | STEM learning |
| Included Components | StratoLauncher, StratoFins, collapsible water fill funnel |
| Item Dimensions | 20.3 x 17.8 x 25.4 centimetres |
| Item Weight | 907 g |
| Manufacturer | Relationshipware |
| Material Type | aluminum, stainless steel, brass, ABS plastic |
| Maximum Age Recommendation | 1188.00 |
| Minimum Age Recommendation | 168.00 |
| Model Name | LCR-5 |
| Model Number | LCR-5 |
| Number of Items | 1 |
| Number of Players | 1 |
| Operation Mode | Manual |
| Power Source | Compressed Air |
| Size | 7 x 8 x 10 inches |
| Special Features | Portable |
| Theme | Everyday Objects |
| Toy Vehicle Form | Rocket |
| UPC | 700220319066 |

## Images

![StratoLauncher IV Water Rocket Launcher + StratoFins - Image 1](https://m.media-amazon.com/images/I/61JUNVZEtzL.jpg)

## Questions & Answers

**Q: Can you use without water?**
A: Yes, our StratoLauncher IV is designed to use with various fuel sources such as: air only or air and water, as well as dry ice and water although the latter can be a little tricky and dangerous. Not recommended and messy would be things like air and flour, cream of wheat, and similar dry cereals although these do not perform that well and leave a mess behind unlike just air or water.

**Q: Is there a way to fit a remote release? Also, what kind of altitude meter can I get? Thanks**
A: We have plans to develop a remote release this year, but that may take some time. Currently the 10 ft. cable is as remote as it gets. We will be coming out with a cable joiner in the next month or two that will connect another 10 ft. cable making it 20 ft. and it should allow multiples of these if you want to be even further away. Concerning altimeters watch the video link below about mounting an altimeter to a water rocket:
https://youtu.be/26iMMAWt3gw
Under the description you will find a link where these altimeters are available.

**Q: what is the bottle of blue liquid for?**
A: It is 242 Blue Removable Threadlocker for sealing all the fittings that screw into the launcher body. You can see the application of it in the assembly video that is linked in the instruction PDF and it has been uploaded on Amazon as well. It does take 24 hours to cure and harden before you can use the launcher, so plan accordingly.

**Q: How many nozzles come in a kit? (Not including strato fins)**
A: Only 1 nozzle comes in the kit, which can be used on the StratoFins or used without the StratoFins. The StratoFins do not come with a nozzle, since they were designed and sold to be used on most any water rocket launcher whether it uses a nozzle or not. If you need additional nozzles they can be purchased on our site (StratoFins.com).

## Customer Reviews

### ⭐⭐⭐⭐⭐ Literally a blast...
*by W***E on 9 July 2024*



### ⭐⭐⭐⭐⭐ Impressionnant!
*by L***D on 6 April 2021*

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.

### ⭐⭐⭐⭐⭐ Works so well
*by D***L on 22 January 2021*



## Frequently Bought Together

- Relationshipware StratoLauncher IV Water Rocket Launcher + StratoFins
- 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

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-01*