Subject:
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Re: (Un)steerable Shrimp
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 3 Oct 2001 07:34:25 GMT
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Viewed:
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635 times
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"Elijah Meeker" <lego-robotics@crynwr.com> wrote:
> > I'm still experimenting with this issue, too. I don't have much success
> > to report yet.
>
> I hit upon near total success last night, and the solution turns out to
> be very simple (surprise!). It is an ordeal for me to get pics on the
> web at the moment (I'm inbetween ISPs), but here it is in essence.
>
> The side of the shrimp is 4U high (I am not sure the common lego term,
> but for this email 1u = a brick plus two plates, then subtract two
> plates from the total). There should be no spaces left between the
> bricks, otherwise the liftarm plates will find places to catch. Place
> one medium pulley between the bogey arm and the body of each axle. Place
> two 1x7 lift arm plates (32065) vertically, between the arms and the
> body, as far out front and back from the axle as possible, and attached
> to the normally horizontal arms of the bogey.
> Heh, I am not sure *I* can follow that, but that will have to do for
> now.
I can't wait to see the pictures :-)
> At any rate, they are now laterally stronger, and slide without
> obstruction.
>
> Oh, one last thing, I never realized until I started stuffing flex hose
> into them how widely the tollerences vary on black pins. It's amazing
> considering the exacting tollerences of the outsides. I wonder if they
> feed black tube into the mold, heat it and blow air in so as to get the
> exact outside tollerences they need.
You know that there are different kinds of black pins, don't you? There has
been a recent change in the thickness of their wall:
http://news.lugnet.com/robotics/?n=14515
Mario
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Message is in Reply To:
 | | Re: (Un)steerable Shrimp
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| (...) I hit upon near total success last night, and the solution turns out to be very simple (surprise!). It is an ordeal for me to get pics on the web at the moment (I'm inbetween ISPs), but here it is in essence. The side of the shrimp is 4U high (...) (23 years ago, 2-Oct-01, to lugnet.robotics)
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