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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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Japanese WRC with wheels made of CDs

Discussions about water rocket powered cars, sleds or boats.
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Re: Japanese WRC with wheels made of CDs

Post by rockets-in-brighton » Wed Oct 21, 2009 5:02 pm

Terrible camerwork! But interesting cars. I noticed a tube running to the base of the bottle, I wonder if that helped with ensuring that all of the water is ejected?

And I remember his 2-stage rocket and whacky parachutes with the long coloured streamers in line with the cord.

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Re: Japanese WRC with wheels made of CDs

Post by Jelo » Thu Oct 22, 2009 11:19 am

yeah, the camera work isnt great but his cars work fine! but there kinda slow.... yeah, hes using a rod to get all the water out, i do it too, its very helpfull, altough it takes some times to make it work, for thos who want to try it, USE A TUBE BIGGER THAN THE NOZZLE very important :mrgreen:


always wear a raincoat

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