Subject:
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RE: Math.. I'm making my head hurt...
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Newsgroups:
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lugnet.cad
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Date:
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Mon, 5 Feb 2001 02:43:20 GMT
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Highlighted:
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(details)
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Todd Lehman writes:
> In lugnet.cad, Steve Bliss writes:
> > Now *my* head is hurting. You mean all these elements
> > http://guide.lugnet.com/partsref/search.cgi?q=%2Bslope+%2Bbrick+%2B33
> > are mis-named? Oooo, someone get me some aspirin...
>
> They're not too far off...
>
> Brick | Multi-Brick Multi-Brick | Single-Brick Single-Brick
> Size | Slope Angle | Slope Angle
> ----------+-----------------------------+------------------------------
> 6x8x1 | 6:35 9.727579° | 11:70 8.930590°
> 2x4x1 | 6:15 21.801409° | 11:30 20.136303°
> 1x3x1 | 6:10 30.963757° | 11:20 28.810794°
> 1x2x1 | 6:5 50.194429° | 11:10 47.726311°
> 2x2x2 | 12:5 67.380135° | 23:10 66.501434°
> 2x3x3 | 18:5 74.475889° | 35:10 74.054604°
I agree with the first column (measuring from the bottom of vertical portion
of the slope to the top of the slope), but not the second. In LDraw parts,
the little vertical portion of the slope is 4 LDU, not 2, so the ratios are
Brick | Single-Brick Single-Brick
Size | Slope Angle
----------+------------------------------
6x8x1 | 1:7 8.130102°
2x4x1 | 1:3 18.434949°
1x3x1 | 1:2 26.565051°
1x2x1 | 1:1 45.000000°
2x2x2 | 11:5 65.556045°
1x2x3 | 17:5 72.610460°
But then again, the LDraw measurements may not be exact.
--Bram
Bram Lambrecht
bram@cwru.edu
http://home.cwru.edu/~bxl34/
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Message has 2 Replies:
 | | Re: Math.. I'm making my head hurt...
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| (...) d'Oh! -- Yes, you're absolutely right -- thank you for the correction! (And I had this funny feeling when I posted that I was doing something wrong in the measurement. The vertical base part is 1/6 brick height, not 1/2 of 1/16.) --Todd (24 years ago, 5-Feb-01, to lugnet.cad)
| | | Re: Math.. I'm making my head hurt...
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| (...) Shouldn't this be: 1x2x3 | 17:5 73.610460° Anyways, I've checked out most of the these calculations and measurements and they seem correct to me. - Mladen (...) (24 years ago, 5-Feb-01, to lugnet.cad)
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Message is in Reply To:
| | Re: Math.. I'm making my head hurt...
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| (...) They're not too far off... Brick | Multi-Brick Multi-Brick | Single-Brick Single-Brick Size | Slope Angle | Slope Angle ---...---+---...---+---...--- 6x8x1 | 6:35 9.727579° | 11:70 8.930590° 2x4x1 | 6:15 21.801409° | 11:30 20.136303° 1x3x1 | (...) (24 years ago, 5-Feb-01, to lugnet.cad)
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