Welcome to the Water Rocket Forum, sponsored by The Water Rocket Achievement World Record Association.

The largest, most sophisticated and ground breaking group supporting you, the serious water rocket flyer! Whether you are a beginner or an expert, the WRA2 has something for everyone.

A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel (the engine of the rocket) is constructed from thin plastic or other non metallic materials (usually a used plastic soft drink bottle) weighing 1,500 grams or less. The water is forced out by compressed air. It is an example of Newton's third law of motion.

I missed you guys!

This forum is for new members to introduce themselves and tell us how they got started in water rocketry.
Post Reply
User avatar
Alien Space Agency
WRA2 Member
WRA2 Member
Posts: 163
Joined: Sun Nov 15, 2015 7:32 am

I missed you guys!

Post by Alien Space Agency » Sun Mar 04, 2018 12:10 pm

Dang, I've been inactive for a really long time (a year perhaps)

I hope to fly a water rocket this summer just for fun. A 2 stage, to be precise. It will be demonstrating an innovation from an old, simple and reliable design that had been overlooked by Gardena based stagers.

My first stage will have a 700-800ml delay chamber, with a coupling connected to the 1st stage that has a .7mm hole that delays the release of the second stage. The main problem, and has always been, is the adhesive. I mainly use regular 2 part epoxy (not the resin type, the one usually used in filling) that can do the job. But, it is too damn heavy. A splice would weigh 50gms if I used epoxy.

Any suggestions for an alternative adhesive? If i get my paws on plastic steel epoxy it'd be worth the try if it grips more with less epoxy.


Nothing can stop a curious mind from inventing- Anonymous

User avatar
anachronist
WRA2 Member
WRA2 Member
Posts: 159
Joined: Sun May 07, 2017 2:18 pm

Re: I missed you guys!

Post by anachronist » Thu Mar 08, 2018 11:43 am

It isn't clear to me what material you are trying to bond. PVC? PLA? PET?
Interested to know how a non-gardena stager works. I've been wanting to make a 2 stage rocket but wasn't interested in using a gardena coupler for it.



User avatar
Alien Space Agency
WRA2 Member
WRA2 Member
Posts: 163
Joined: Sun Nov 15, 2015 7:32 am

Re: I missed you guys!

Post by Alien Space Agency » Fri Mar 09, 2018 6:25 am

Since I have no polyurethane adhesive available (been looking for 2 years) I use regular 2Part epoxy as splice adhesive. Plastic Steel Epoxy for the coupler.

I did try building a crushing sleeve out of heatshrink. Works well at low pressures.


Nothing can stop a curious mind from inventing- Anonymous

bobsmith443
New Member
Posts: 1
Joined: Wed May 30, 2018 9:27 am

Re: I missed you guys!

Post by bobsmith443 » Wed May 30, 2018 9:31 am

I know nothing about water rockets im just tryna get a full sqaud on fortnite. Im on xbox and my username is HitTheSub. Let me know if anyone down to play.



Post Reply