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Subject: 
Re: Math.. I'm making my head hurt...
Newsgroups: 
lugnet.cad
Date: 
Mon, 5 Feb 2001 03:37:21 GMT
Viewed: 
586 times
  
In lugnet.cad, Bram Lambrecht writes:
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°

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


But then again, the LDraw measurements may not be exact.
--Bram


Bram Lambrecht
bram@cwru.edu
http://home.cwru.edu/~bxl34/



Message is in Reply To:
  RE: Math.. I'm making my head hurt...
 
(...) 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 | (...) (23 years ago, 5-Feb-01, to lugnet.cad)  

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