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| I was playing with pneumatic piston and switch linkages trying to improve on the
geometries I've developed in the past.
This lead to inchworm 4.
http://www.brickshelf.com/gallery/kclague/inchworm4/sta_0764.jpg
Inchworm 4 has two waves travel down its body like inchworm 3
http://news.lugnet.com/technic/?n=16051
The big difference is the design of an individual body segment, which ends up
looking like a 7. A typical linkage involves a beam running parallel to the
piston, with the piston offset from the beam and hooked to a switch.
http://www.brickshelf.com/gallery/kclague/inchworm3/hpim0057.jpg
Inchworm 4 has the piston in-line with the supporting beam. A lever hooks the
piston to the switch, as seen here:
http://www.brickshelf.com/gallery/kclague/inchworm4/hpim0051.jpg
The orange 1x5 thick beam in the middle is the lever that hooks the piston to
the switch.
This new design makes for a very sleak and simplified than that in inchworm 3
(IMHO).
There are more pictures here:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=291660
For some of my old and dear friends, please notice the use of a wide variety of
colors (does John Barnes have enough time to read technic anymore?)
PLMKWYT,
Kevin
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| In lugnet.technic, Kevin L. Clague wrote:
> I was playing with pneumatic piston and switch linkages trying to improve on the
> geometries I've developed in the past.
>
> This lead to inchworm 4.
>
> http://www.brickshelf.com/gallery/kclague/inchworm4/sta_0764.jpg
>
> Inchworm 4 has two waves travel down its body like inchworm 3
>
> http://news.lugnet.com/technic/?n=16051
>
> The big difference is the design of an individual body segment, which ends up
> looking like a 7. A typical linkage involves a beam running parallel to the
> piston, with the piston offset from the beam and hooked to a switch.
>
> http://www.brickshelf.com/gallery/kclague/inchworm3/hpim0057.jpg
>
> Inchworm 4 has the piston in-line with the supporting beam. A lever hooks the
> piston to the switch, as seen here:
>
> http://www.brickshelf.com/gallery/kclague/inchworm4/hpim0051.jpg
>
> The orange 1x5 thick beam in the middle is the lever that hooks the piston to
> the switch.
>
> This new design makes for a very sleak and simplified than that in inchworm 3
> (IMHO).
>
> There are more pictures here:
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=291660
>
> For some of my old and dear friends, please notice the use of a wide variety of
> colors (does John Barnes have enough time to read technic anymore?)
>
> PLMKWYT,
>
> Kevin
I forgot to mention that Inchworm 4 can inch forward or backward by flipping the
polarity reversors on its head.
http://www.brickshelf.com/gallery/kclague/inchworm4/hpim0017.jpg
http://www.brickshelf.com/gallery/kclague/inchworm4/stc_0766.jpg
Kevin
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| | | | Looks great! How about some video so we can see how it works?
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| | | | | | In lugnet.technic, Gordon Buchanan wrote:
> Looks great! How about some video so we can see how it works?
I'm working on postin videos today.
Kevin
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| | | | | In lugnet.technic, Gordon Buchanan wrote:
> Looks great! How about some video so we can see how it works?
Here is a youtube video of inchworm 4 crawling forwards
http://www.youtube.com/watch?v=_Zz1Sh9lNZA
Here is inchworm 4 crawling backwards
http://www.youtube.com/watch?v=rDkBJ1QujQA
PLMKWYT!
Kevin
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| | | | | Kevin L. Clague wrote:
> In lugnet.technic, Gordon Buchanan wrote:
> > Looks great! How about some video so we can see how it works?
>
> Here is a youtube video of inchworm 4 crawling forwards
>
> http://www.youtube.com/watch?v=_Zz1Sh9lNZA
>
> Here is inchworm 4 crawling backwards
>
> http://www.youtube.com/watch?v=rDkBJ1QujQA
>
> PLMKWYT!
>
> Kevin
WOW - Kevin, nice work on the crawlers.
Thank you for posting the video's. Pictures can only say so much.
Chris
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| | | | Kevin! I am astounded by your recent creations. I intently tried to figure out
how you made these inchworms.
The gates that you are so well known for are so elegant yet complex.
The work you have done is a marvel to see! So you were able to get a 1 switch to
1 piston arrangement? Philo came up with that? Amazing.
Drool drool all those clear Cylinders!
I was wondering, would you consider locking the axle at the bottom of the
cylinder base with a 3L technic plate and then add those technic tear drop parts
to act as feet or toes. I really think those parts need to be affixed to the
bottoms of the cylinders.
Could you give that a try and let us know how it works out? They would be better
than the cylinder base acting as a 'foot'.
Just a thought.
Again great work!
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| | | | | In lugnet.technic, Eric Sophie wrote:
> Kevin! I am astounded by your recent creations. I intently tried to figure out
> how you made these inchworms.
>
> The gates that you are so well known for are so elegant yet complex.
>
> The work you have done is a marvel to see! So you were able to get a 1 switch to
> 1 piston arrangement? Philo came up with that? Amazing.
>
> Drool drool all those clear Cylinders!
>
> I was wondering, would you consider locking the axle at the bottom of the
> cylinder base with a 3L technic plate and then add those technic tear drop parts
> to act as feet or toes. I really think those parts need to be affixed to the
> bottoms of the cylinders.
>
> Could you give that a try and let us know how it works out? They would be better
> than the cylinder base acting as a 'foot'.
>
> Just a thought.
>
> Again great work!
Hi Eric,
Thanks for the feedback. I'll see what I can do and let you know.
Kevin
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In lugnet.technic, Kevin L. Clague wrote:
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I was playing with pneumatic piston and switch linkages trying to improve on
the
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Hi Kevin,
Thanks for posting these amazing projects! I have been stuck at home recovering
from a severed Achilles tendon and was looking for something new to build. It
is always fun building your pneumatic creations.
bob
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