Subject:
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Re: SSClagorpion - Another creature
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Newsgroups:
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lugnet.technic
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Date:
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Tue, 18 Jan 2005 22:45:04 GMT
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Viewed:
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27254 times
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In lugnet.technic, Steve Hassenplug wrote:
> > You guys might be interested in this beast...
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?f=60696
>
> Thanks.
>
> Here's a few observations (more or less "from what I can see...")
> - The compressor (on top) uses 12 small cylinders
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=551846
Wonderfully compact.
>
> - It has 2 battery boxes
>
> - The legs lock, and are driven up & down by pneumatics, one cylinder to raise/lower
> and another to lock.
> - Up: http://www.brickshelf.com/cgi-bin/gallery.cgi?i=551845
> - Down: http://www.brickshelf.com/cgi-bin/gallery.cgi?i=551844
>
> - The legs are driven forward/backward by motors->znap
> flex-axles/u-joints->wormgear->turntables
> - The leg pneumatics are driven from cams, which run off the main motors. So the
> forward/back motion would be sync-ed with the up/down via cams. Springs are used to
> keep the switches against the cams
There does not seem to be any guaranteed synchronization between the up down
mechanism and the forward back. Slow pistons might not hit the ground before
the front back transistions start.
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=551860
>
> - Each leg is only connected to 2 pneumatic hoses
That is nice and tidy.
>
> - The feet swivel
Yes, I have a quadraped with swiveling feet and it makes a big difference on
traction.
>
> - From some pictures, it doesn't look like the legs are connected directly together:
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=551817
>
> - But they are: http://www.brickshelf.com/cgi-bin/gallery.cgi?i=551858
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> - Transmission type shifting is used for forward/back leg motion (see above)
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> - The Claw is only decorative http://www.brickshelf.com/cgi-bin/gallery.cgi?i=551840
> :)
>
> - There is no "controller"
>
> Comments:
> This is a nice piece, but, personally, I'm not too fond of using the transmission to
> shift the direction of leg movement, or for that matter, the whole worm->turntable
> assembly.
>
> Don't get me wrong, I'd love to see it walk, and it's better than any walker I've
> ever made... but then again, I've never made a walker...
Steve,
I think you should give it a try. Bipeds are the big challenge if you ask me.
The octopod is an impressive piece of work. You'll be happy to know that
bricklink orders are starting to arrive so I have enough red pieces to complete
all eight legs in red. I've started to merge the RCXs, scout and radial
compressor into the body.
I'd like to avoid your standard rectangular body if possible. They look so
unnatural.
My leg design has lock, but it is using the folding table leg technique you
suggested.
Kevin
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Message has 1 Reply:
 | | Re: SSClagorpion - Another creature - Greene Scorp
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| In lugnet.technic, Kevin L. Clague wrote: <snip> (...) Almost as compact as my radial.. which I've developed /developing 3 and 6 cylinder versions as well.. the 3cyl radial is 12x13x4 studs and can easily be run with any motor (even the micro), but (...) (19 years ago, 19-Jan-05, to lugnet.technic)
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Message is in Reply To:
| | Re: SSClagorpion - Another creature
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| (...) - The compressor (on top) uses 12 small cylinders (URL) It has 2 battery boxes - The legs lock, and are driven up & down by pneumatics, one cylinder to raise/lower and another to lock. - Up: (URL) - Down: (URL) The legs are driven (...) (19 years ago, 13-Jan-05, to lugnet.technic)
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