Subject:
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Re: Proposal: New Parts Category for round parts
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Newsgroups:
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lugnet.cad.dev.org.ldraw
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Date:
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Fri, 4 Jan 2002 14:56:35 GMT
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Viewed:
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908 times
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In lugnet.cad.dev.org.ldraw, Fredrik Glöckner wrote:
> My personal opinion is that the liftarm category in LDraw is way too
> wide.
I agree with that.
> I'm not quite sure myself what a "liftarm" actually is in the
> English language.
After thorough research (I googled 'liftarm', and found mostly legofan
sites), I've come to the conclusion that 'liftarm' was made up by
somebody, and is only used to describe Lego elements. I'm guessing that
either (a) it's a literal translation from a Danish term or (b) James
Jessiman coined the word.
> But my understanding from LEGO is that a liftarm is
> a rod or a beam with a cross axle hole in the end(s). That way, the
> liftarm can be used to transform a rotating motion into a "lifting"
> force. E.g., a rotating axle with a "liftarm" connected can be used
> to lift something.
That was the way I understood it.
> But this understanding may very well be wrong. Perhaps the word
> "liftarm" is simply synonymous with "rod"?
I wouldn't think so.
> If so, the parts I suggest
> to rename could be called
>
> 2637 Technic Liftarm 16L with Axleholes
> 2739 Technic Liftarm 6L with Ball Joint Sockets
No, I don't think that would be the way to go.
> But back to the liftarm category. In my opinion, it is wrong to put
> the halfbeams into this category. The halfbeams are smooth beams with
> rounded ends and no studs and with a half stud width. I think we need
> a new category to catch these elements, as well as the fairly new full
> width smooth beams with rounded ends.
Agreed, both on the half-width and full-width beams should be something
other than "liftarm".
> I don't know, however, what this new category should be called.
> "Beam" should not be used, since Technic Bricks are beams, as well.
That is a problem. But keep reading...
> But if indeed we come up with a new category for these elements, it
> would be natural to put the 3x5 full width beam with one 90 degree
> bend into it. And then, it would be natural to fill in with the other
> full width smooth bended beams with cross axle holes in the ends, and
> finally the half width beams and, liftarms. Now, some of these
> elements are indeed liftarms according to my understanding. So in the
> end, they all end up in the same category anyway! Hence, perhaps it
> is best to retain the current situation after all, and call all the
> elements "liftarms"!
I'm with you all the way here. But let me take it one step further: as
you noted, "beam" is a common term for Technic bricks. So, this new
category could also include the Technic brick parts. Then, all technic
bricks, liftarms, and half- and full-width smooth beams would be in one
place, with a nice generic label of "Beam".
Steve
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