Subject:
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Re: New Mecha: The Cub
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Newsgroups:
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lugnet.build.mecha
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Date:
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Tue, 15 Nov 2005 07:42:38 GMT
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Viewed:
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1147 times
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In lugnet.build.mecha, Kyle Vrieze wrote:
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In lugnet.build.mecha, Eric Sophie wrote:
Did you really get a 20 inch mech to support its own weight using only
rotating click hinges? Really? Are you serious?
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I introduced stops around some of joints to help.
Once the weight of the Mech exceeded the joints abilities, I surrounded some of
the joints with bricks. Limiting some of the posability, yet continuing to use
the rotational click hinges as the basis of the creation.
There is one other net effect I discovered. Although the weight of Mecha overall
seems to exceed the weight allowance of this particular kind of joint, I found,
once fully built; the weight helps keep it standing.
Meaning the Mech is heavy sure, but it is solid. Therefore stands well.
The bulk around the joints, the armour, the flaps, the skirts, all help to
insulate the Mecha from being too floppy, thus the rigidity comes from its mass.
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That’s a rather tricky thumb, as well.
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Thanks, it wasn’t until later I realized I had more of those larger binoculars,
or I would have done all the fingers like that. Or a combination thereof. I
gotta say making hands is one of the most difficult things to do. Trying to make
each hand new is tough, as well as picking the parts to work at scale.
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So you say both the heel and the toe
pivot? Maybe future pics will make this more clear. I love that foot,
though, the way those slopes mesh. I particularly like that “rounded
plus-sign” part used on the instep.
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See how the “center” of the foot is at an
angle
, well inorder
to connect that section, while at an angle, to another flat section behind it,
was to use click hinges. The hinges provide the connection while still
maintaining the geometry of the ankle connection. Cool thing is it can now move
because it is not fixed directly with straight brick connections.
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Great color for a monochrome mech, I really miss that old dark gray. It has
that high-quality, high-tech look.
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It looks so much better in person. I am working on more photos in differnt
conditions, outdoor, floresent etc... btw, the Dark Gray actually looks good in
floresent lighting. Weird.
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Love that snotted slope work on the legs,
too.
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Thanks, I always wanted to do that using those peices.
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I’m painfully aware that the rotating click hinge provides only two axes of
rotation, however I would have liked to see a solution that would allow the
Cub to throw back its shoulders (as if sticking its chest out). I think that
would allow for a more natural stance. You’ve got a waist joint, so I would
imagine you could still balance it. Just a thought.
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Almost all the robots I build have this
feature.
One of the
issues that comes from using this method on a Mecha that has this style of
Shoulder Armour, is it gets in the way of that 3rd pivoting motion. Something
perhaps “K” could try to tackle. Since he is familair with this style of
Shoulder Armour. Where it pivots right at the center of the shoulder joint, yet
is structurally located and mounted to the outerside of the Arm.
Tricky. 1
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Nice work, Eric! I want to try out a new hip design soon, but once I get the
hips to work I think I’ll start next with the feet, like you did here.
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Thanks, the more I can describe, the more I can convey they experience.
Maybe help explain some of the things I learn when building.
They are things I discover, not that building Mecha is hard.
That is up to the builder to decide how complicated they want their project to
be. I advocate the simplest solution is often the best solution. Then throw some
plates and slopes on it.
:)
e
1 Actually on second thought, I was able to do it here with the
Rizmit.
That Mecha
has a similar style Shoulder Armour, but also has a partially sculpted chest
that allows the shoulder to pivot while incorporating an accept for the range of
articulation.
Either way, added functionality, ups the scale. Perhaps a larger Mecha in this
style utilizing that method could be the next challenge.
(after my current
Mindstorms Robot Project that is...)
;)
Thanks a lot for your feedback.
Eric Sophie
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Message is in Reply To:
 | | Re: New Mecha: The Cub
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| (...) Did you really get a 20 inch mech to support its own weight using only rotating click hinges? Really? Are you serious? No, really? That's a rather tricky thumb, as well. So you say both the heel and the toe pivot? Maybe future pics will make (...) (19 years ago, 15-Nov-05, to lugnet.build.mecha, FTX)
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