Subject:
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Re: Anyone have any luck making a successful floating boat?
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 16 Jun 1999 03:09:08 GMT
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Original-From:
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Michael Aaron Finch <{goblintrain@}avoidspam{uswest.net}>
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Viewed:
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1448 times
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Alex Wetmore wrote:
> From: Clay Aucoin <caucoin@cruiseshoppes.com>
> > Another was to put a plastic bag at the bottom of the plates. This got me
> > thinking that maybe there could be a way to create a sort of "tube" and • blow up
> > a small balloon inside of it?????
>
> If you are willing to use non-lego pieces then just use a couple of 20oz
> soda bottles filled with air and sealed. They are essentially free.
> I think bottles r the beginning of a workable idea. Perhaps u could
> use an empty l bottle that have the neck displaced to one side (like a motor
> oil bottle). Insert in the cap a tire plug or similar chunk of rubber.
> secure the rubber cork w/silicon glue, & puncture a needle sized hole in the
> center of it. It needs to be small so that it will grip tight on a pump
> needle like is used to inflate a ball. Then u could simply unscrew the cap to
> feel it up halfway w/water. Put the cap back on, & use a regular hand pump
> to pressurize the bottle vis the hole in the rubber cork. This would
> hopefully give u enough power to move, while at the same time, lasting long
> enough to let your robot play around for a while. Just remember to set the
> bottle w/ neck side low, so that u dont lose your air w/out expelling water.
Some complications i would see w/this is that #1, u would have to
use it immediately after pumping because there is no way to stop the air-flow
(unless u could cork it w/a needle or something).
#2, it will probably not propell the boat evenly. Depending on the
angle of the exhaust hole, & the stability of the bottle, its not going to want
to move in a straight line.
This may be correctible to an extent by using a pre-fabricated spout (such as
in the neck of those squeeze bottles of pure lime juice, or detergent) instead
of the rubber plug mentioned earlier. Even w/this the spout will need to be
set perfectly straight in the cap of the tank. The bottle will also need to be
secured to the boat w/great care.
One way or another, w/a little luck, this might propel your boat. : )
Goblintrain
>
> alex
>
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 1 Reply:
 | | Mindstorms at JavaOne
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| Ok, I don't think this is too far off-topic. At the JavaOne keynote presentation this morning in S.F., James Gosling and Kay Neuenhofen of Sun Microsystems demonstrated Mindstorm tanks controlled from Palm V's running KJava aka MicroJava. They also (...) (25 years ago, 16-Jun-99, to lugnet.robotics)
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