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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.


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Children dragster ideas for summer fun

Discussions about water rocket powered cars, sleds or boats.
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mirleta
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Children dragster ideas for summer fun

Post by mirleta » Tue May 17, 2011 2:41 am

Hi all,

I am looking for fun ideas to use dragsters for childen fun that they can play around during summer time.

Games, Photos, videos,... are wellcome

The idea is that they can play a learn things while playing with them.

thanks all for your inputs

Muchas gracias
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thampson
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Re: Children dragster ideas for summer fun

Post by thampson » Tue May 17, 2011 6:16 am

The above examples of water rocket cars are pretty unstable, I have seen videos of them. The pink car gets airbourne at one stage from memory.

If you want to try something like this, start with a 1 bottle water rocket car and make sure the base is relatively solid and that you start with low pressures then work up ie: 70psi and up. Aim for stability and keeping them on the ground.

Here is an example of what I mean
http://wrocket.hampson.net.au/?p=779

Also I wouldnt let children play with these unsupervised. I would think anyone younger than 14 or so needs to be supervised. Older kids need to understand how to operate them safely.

-todd-


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mirleta
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Re: Children dragster ideas for summer fun

Post by mirleta » Tue May 17, 2011 7:54 am

Thanks for yout input.

I like your wooden dragster.

Some questions :

Will it work/move your dragster with a 1,5l without reducing the nozzle ?

I mean just for fun, no speed/distance record goal.

I would like to make it simple and safer.

The idea is to use a cork + bike valve with a 1,5l. bottle.

COMPETITION
* two dragsters
* to children pumping at the same time
* see which car goes further

Thanks again for your ideas/suggestions



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U.S. Water Rockets1
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Re: Children dragster ideas for summer fun

Post by U.S. Water Rockets1 » Sun May 22, 2011 12:00 am

mirleta wrote:Thanks for yout input.

I like your wooden dragster.

Some questions :

Will it work/move your dragster with a 1,5l without reducing the nozzle ?

I mean just for fun, no speed/distance record goal.

I would like to make it simple and safer.

The idea is to use a cork + bike valve with a 1,5l. bottle.

COMPETITION
* two dragsters
* to children pumping at the same time
* see which car goes further

Thanks again for your ideas/suggestions

You should think seriously about building a launcher with cable ties. Look up "cable tie launcher" and build a horizontal version for your car. The cork popping launcher is a little unpredictable and with kids around you want predictability. Cable tie launchers are incredibly easy to make and the effort is maybe 50% more work than a cork launcher. You won't have a whipping hose with a cork on it shooting back at every launch.


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RaZias
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Re: Children dragster ideas for summer fun

Post by RaZias » Mon May 23, 2011 3:12 pm

If you want a easy one you can make a gardena system.


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thampson
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Re: Children dragster ideas for summer fun

Post by thampson » Wed May 25, 2011 9:34 am

Mirleta

Ive been offline while my PC was getting fixed so sorry for the slow response.

Yes a single 1.5L bottle will definatley move a water dragster

Here is a video of our first water rocket car with a single 1.5L bottle and a 9mm gardena nozzle
http://www.youtube.com/watch?v=xzi8r7S6Cp8

A cork and a bike valve will work, but USWaterrockets is right, a cable tie launcher or a gardena style (if you can get them there) is much more predictable. We are using a gardena style nozzle and launcher in the video above. You could use two like this to have drag races :)

-todd-


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anora
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Re: Children dragster ideas for summer fun

Post by anora » Tue Jun 28, 2011 12:37 am

Hi,

Thanks for asking the ideas for children summer fun.
I want to share a game with all of you....
This game is played by all the family member in summer or some events. When all the family members and even different families gather on one place to spend the summer. It is home made game which you can play with your kids and children within your home...You can search for that type of games and make fun with family.. I like that treasure hunt game very much. Which is easy to make at home and played by all the members and fun...



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Re: Children dragster ideas for summer fun

Post by rickflair786 » Tue Feb 07, 2012 3:37 am

I think you should try a balloon dragster that you can create by using some piece of cardboards, some straight pins, flexible straw and a balloon. All you need to do is make a box by these cardboards, than attach the straw with box by using pins, and finally bind the balloon with the box.



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bugwubber
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Re: Children dragster ideas for summer fun

Post by bugwubber » Thu Feb 21, 2013 2:02 pm

I think this idea will mesh well with a post Halloween pumpkin derby.


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Flash
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Re: Children dragster ideas for summer fun

Post by Flash » Tue May 28, 2013 6:21 am

I was into 1/24 Scale slot car racing to include Drag racing. I was the owner of a business from 2006 to just the start of this month, I sold out.
Anyway, if you want a good timing system, take a look at the Trackmate outdoor drag timing system, it will cost you but there is none any better. I had the indoor 1/24 slot car system. Here is a link:http://www.trackmateracing.com/shop/cat ... ategory=13
Flash


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Blenderite
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Re: Children dragster ideas for summer fun

Post by Blenderite » Wed May 29, 2013 9:19 am

Flash wrote:I was into 1/24 Scale slot car racing to include Drag racing. I was the owner of a business from 2006 to just the start of this month, I sold out.
Anyway, if you want a good timing system, take a look at the Trackmate outdoor drag timing system, it will cost you but there is none any better. I had the indoor 1/24 slot car system. Here is a link:http://www.trackmateracing.com/shop/cat ... ategory=13
Flash
WHOA!! That thing is super expensive!!! Who in the world would spend that kind of money on something like that???? I know I sure wouldn't!!!!

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bugwubber
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Re: Children dragster ideas for summer fun

Post by bugwubber » Wed May 29, 2013 10:31 am

DogLover wrote:
Flash wrote:I was into 1/24 Scale slot car racing to include Drag racing. I was the owner of a business from 2006 to just the start of this month, I sold out.
Anyway, if you want a good timing system, take a look at the Trackmate outdoor drag timing system, it will cost you but there is none any better. I had the indoor 1/24 slot car system. Here is a link:http://www.trackmateracing.com/shop/cat ... ategory=13
Flash
WHOA!! That thing is super expensive!!! Who in the world would spend that kind of money on something like that???? I know I sure wouldn't!!!!

-DogLover
Well, I would after I win the lottery... Seriously though, that's something a club or league would buy. And honestly, in the world of RC and other forms of racing, many people wouldn't bat an eye to drop that much on something.


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