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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.

RC car - 160 mph

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RaZias
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RC car - 160 mph

Post by RaZias » Mon May 16, 2011 9:03 am

Here is a RC car with a shape of a rocket car that hitted 160 mph, I dont know how it steers.

http://dvice.com/archives/2009/07/pocket-rocket-w.php


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RaZias
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Re: RC car - 160 mph

Post by RaZias » Mon May 16, 2011 9:49 am



Research and Development is the soul of WR

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RaZias
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Re: RC car - 160 mph

Post by RaZias » Mon May 16, 2011 3:14 pm



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Andromeda
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Re: RC car - 160 mph

Post by Andromeda » Mon May 16, 2011 6:48 pm

RaZias wrote:Here is a RC car with a shape of a rocket car that hitted 160 mph, I dont know how it steers.

http://dvice.com/archives/2009/07/pocket-rocket-w.php
No way!

Wow!


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RaZias
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Re: RC car - 160 mph

Post by RaZias » Tue May 17, 2011 2:15 am

This is a list of videos of RC records:

http://fastestrc.blogspot.com/2008/01/videos.html

It seems there will be several attemps to achive 200 mph or more, what amazes me is how these cars dont loose steering and handling, they have a micro-suspension scaled down from real cars and also they have 4 motorized wheels.

A WR-car has no motorized wheels and no suspension system.


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RaZias
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Re: RC car - 160 mph

Post by RaZias » Tue May 17, 2011 6:06 am

It seems the car goes straight line thanks to gyroscopes that manipulate rudders, maybe it would be a nice idea for a WR-dragster...I dont know the price of such thing.

http://jalopnik.com/284060/rc-car-aims- ... mph-record


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thampson
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Re: RC car - 160 mph

Post by thampson » Tue May 17, 2011 6:48 am

RaZias,

thanks for those links, there are plenty to look at and analyse.

I noticed the fast cars having a vertical fin, being very low to the ground an aero shell and very wide compared to the wheelbase. Some food for thought there for sure :)

I couldnt find much on the gyro steering but its an interesting concept :)

-todd-


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thampson
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Re: RC car - 160 mph

Post by thampson » Tue May 17, 2011 7:58 am

RaZias,

I did a bit of reading up on the gyro steering and this is what the fast car you mentions uses to keep the car straight. The gyro which is normally used for helicopters tail rotors, is used in a car and is in series with the steering servo. It reacts to changes away from the preferred heading and send signals to the steering servo to control the cars steering. In effect its correcting the steering much faster than any human could, it can also react to oversteering to countersteer to smooth out big steering adjustments.

This is an excellent find we will definitely look into it more to try to integrate it with our own r/c steering.

Two of them could have an application in vertical water rockets as well. one on the x-axis and one on the z-axis. You could build a gymballed nozzle, hook these two up and let it control how straight you fly the rocket. Easier said than done of course, but some more food for thought there :)

thanks again RaZias :)

-todd-


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RaZias
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Re: RC car - 160 mph

Post by RaZias » Wed May 18, 2011 2:14 am

Here is a RC car propelled by a solid rocket so it's more similiar to a WR-dragster:

http://black-knight-rc.blogspot.com/


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