Subject:
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Re: need to make a 15 degree angle
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Newsgroups:
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lugnet.parts
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Followup-To:
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lugnet.robotics
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Date:
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Wed, 1 Oct 2008 00:29:41 GMT
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Viewed:
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8096 times
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In lugnet.parts, Sam Pagel wrote:
> anyone know of a part or combination of parts that would
> make a 15 degree angle... i have lots of room to work
> with, just have no idea how to achieve the angle.
Well... as a Technic type, I'd do that with triangles. A long Technic beam as
the base, and another almost-as-long for the slope, with a small beam for the
"back" or "support" - since you can join these by pins, the geometry is rather
variable. How close you need to get to 15°, and how much space you need,
constrain the problem quite a lot - but an adjustable framework of beam-and-pin
pieces should give you just about any angle you need. If you need it *really*
exact, replace the fixed-length back support with an adjustable "element" made
by sliding two cross-blocks to any position you want along an axle. Take a look
at the bottom structure here:
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=3442713
By sliding the black cross-block (bracketed by yellow half-bushings) along the
long red axle, you can really get any geometry you want... for more
"interesting" structures, just substitute studded beams for the studless ones
and build on them.
--
Brian Davis
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Message has 1 Reply:
 | | Re: need to make a 15 degree angle
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| (...) It doesn't need to be exact, just repeatable. I need to make an armature of 4 or 5 successive 15degree "turns" to support some panels that are making sort of a jointed arc. I'll give the technic pieces a try. Almost jumped for joy at Nick (...) (16 years ago, 1-Oct-08, to lugnet.robotics)
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Message is in Reply To:
| | need to make a 15 degree angle
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| anyone know of a part or combination of parts that would make a 15 degree angle, similar to the way 30365 and 30364 (locking hinge bricks) work. I would use those but they only stop at every 22.5 degrees. It wouldn't have to be a compact part(s) (...) (16 years ago, 30-Sep-08, to lugnet.parts)
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