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.
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.
my water rocket car
- Jelo
- WRA2 Member
- Posts: 225
- Joined: Wed Sep 16, 2009 4:38 pm
my water rocket car
here's a video of my 2 litre water rocket car!
[youtube][/youtube]
[youtube][/youtube]
Anto'
always wear a raincoat
always wear a raincoat
- thampson
- Current WRA2 Dragster Speed & Distance Record Holder
- Posts: 232
- Joined: Wed Jul 16, 2008 8:19 am
Re: my water rocket car
Anto
nice work
Plenty of run off room there on the beach.
I guess the sand was really hard as I cant see the wheels digging in. Was the sand flat or sloping to the right .. did this account for the car moving to the right ?
I like the shot of the dog checking it out !!
keep us informed of your progress
-todd-
nice work

I guess the sand was really hard as I cant see the wheels digging in. Was the sand flat or sloping to the right .. did this account for the car moving to the right ?
I like the shot of the dog checking it out !!

keep us informed of your progress
-todd-
HHWRSA
Hornsby Heights Water Rocket Space Agency
http://wrocket.hampson.net.au
Hornsby Heights Water Rocket Space Agency
http://wrocket.hampson.net.au
- RaZias
- WRA2 Member
- Posts: 751
- Joined: Mon Jul 14, 2008 3:16 pm
Re: my water rocket car
I like the fact of using the Mecano as structure instead of wood, it's more faster and simpler to construct !
I hope you can put a radio controled system on it.
I hope you can put a radio controled system on it.
Research and Development is the soul of WR
- Jelo
- WRA2 Member
- Posts: 225
- Joined: Wed Sep 16, 2009 4:38 pm
Re: my water rocket car
thanks both of you
RIP plane....

yeah i went to the beach to have some fun with my dog and RC cars and just tought about letting the WRC tag along :P the tide was going down, leaving moist flat sand, just moist enough to hold together but not enough to stick to the wheels. actualy the slope was near 0 degrees maybe 1 or 2, i figured out when i went home some sand got in the right wheels, creating a lot more friction on one side, making it turn right. and yeah, my dog gets very exited once he sees a water rocket,or anything that moves actualy...he jumped on my RC plane once just after landingnice workPlenty of run off room there on the beach.
I guess the sand was really hard as I cant see the wheels digging in. Was the sand flat or sloping to the right .. did this account for the car moving to the right ?
I like the shot of the dog checking it out !!
keep us informed of your progress

yep, i use mecano on it so i can easily change it around as it is one of my first cars, i can change the fins, rear wings and so on! only problem is the weight of the car, 650g without the bottles...but it gives it good momnetum.only prolem with mecano....rust.....I like the fact of using the Mecano as structure instead of wood, it's more faster and simpler to construct !
I hope you can put a radio controled system on it.
Anto'
always wear a raincoat
always wear a raincoat
- RaZias
- WRA2 Member
- Posts: 751
- Joined: Mon Jul 14, 2008 3:16 pm
Re: my water rocket car
You can paint the mecano parts with a anti-rust spray
Research and Development is the soul of WR
- Jelo
- WRA2 Member
- Posts: 225
- Joined: Wed Sep 16, 2009 4:38 pm
Re: my water rocket car
yeah but them they stick together and the holes get clogged up... but the way im making a new water rocket that would use an air flap recovery system. gonna try compete in class C! got a massif parachute as well hehehe
Anto'
always wear a raincoat
always wear a raincoat
- RaZias
- WRA2 Member
- Posts: 751
- Joined: Mon Jul 14, 2008 3:16 pm
Re: my water rocket car
If you paint each part separated (before making the car) and then you put ruber discs between each hole (so the friction doesn't take out the anti-rust paint), I think it would work.
Research and Development is the soul of WR
- Jelo
- WRA2 Member
- Posts: 225
- Joined: Wed Sep 16, 2009 4:38 pm
Re: my water rocket car
i stopped water rocket car making for a while...there realy not as impressif as rockets!
Anto'
always wear a raincoat
always wear a raincoat