Fully understanding the fire hazard across America's dry west with traditional model rocket engines that burn, I've taken it upon myself to research, experiment, enhance, and greatly simplify water rocket construction and performance.
Specifically, I've focused solely on a basic, one-stage water rocket, using the Quest Q7308 Water Rocket Launcher, suitable for urban parks and playing fields.
And what I came up with was a 6.56 ounces (186 grams) empty weight high-performance water rocket. I was also mindful of the need to fully breach that 100-foot (30-meter) Apogee Credibility Gap so as to wow the general public. After all, at that height, most will find it difficult to distinguish a 140-foot rocket flight from a 500-foot rocket flight. And a digital camera with a wide-angle camera lens taken aloft creatively works to perpetuate the wonderful illusion.
And with the Quest Q7308 Water Rocket Launcher, my 23.63-inch (60.2 cm) tall water rocket slightly oversize fins, 90 psi, and c custom-built 12-inch (305 mm) launch rod all work together to achieve safe and perfect vertical 90-degree launches and reach a respectable 142-foot (43.4 m) apogee.
Sure, one can launch a more standard 2-liter water rocket, but I've found that the lean-and-mean water rocket made from 1-liter S.Pelegrino soda bottle is best suited for urban parks and playing fields.
To peacefully co-exist with urban parks I strictly avoid using colored water and dish soap launches, and especially colored powder dry launches... all of which could quickly get water rockets banned from urban parks and playing fields. And, contrary to popular belief, those water + dish soap blends do not enhance the performance of water rockets.
The Quest Q7308 Water Rocket Launcher, with the Quest Water-Thrust Nozzle is the perfect combination for the beginner to get involved in truly high-performance water rocketry.
For additional information, check out my webspace:
https://www.instructables.com/High-Performance-Water-Rocket-Suitable-for-Urban-P/