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 CAD / LDraw Files / Parts / Primitives / 196
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Subject: 
Re: Why aren't the technic gear teeth primitives?
Newsgroups: 
lugnet.cad.dat.parts.primitives
Date: 
Fri, 29 Mar 2002 09:39:54 GMT
Viewed: 
1762 times
  
In lugnet.cad.dat.parts.primitives, Steve Bliss writes:
In lugnet.cad.dat.parts.primitives, Mark Kennedy wrote:

I was thinking that the teeth for the old technic gears (3647-1649) and the
beveled ones (32270 and 32296) should be made into primitives. I tried • editing
the 3648 part in ldraw, but the file was too big to even load!

Are the teeth the same between different parts?   If they are different,
it doesn't make much sense to have primitives for each one.

Even if the teeth are different, it would be possible to make subfiles
for the teeth.  This could make sense for the higher-tooth-count gears.

Steve

The teeth on the small 8 tooth gear are slightly different from the larger
ones(Though in the file they are pretty much drawn as trapezoidal boxes).
But on the two beveled gears they apear practicly identical as far as I can
tell. Also I submitted some updated versions of old parts to parts@ldraw.org,
but haven't seen them listed in the tracker.



Message has 1 Reply:
  Re: Why aren't the technic gear teeth primitives?
 
(...) If they were designed properly, the tooth profiles will be different between the 8t, 24t, etc. gears. The tooth profile of a gear follows an involute curve, which means the profile is the involute of a base circle slightly smaller than the (...) (23 years ago, 29-Mar-02, to lugnet.cad.dat.parts.primitives)

Message is in Reply To:
  Re: Why aren't the technic gear teeth primitives?
 
(...) Are the teeth the same between different parts? If they are different, it doesn't make much sense to have primitives for each one. Even if the teeth are different, it would be possible to make subfiles for the teeth. This could make sense for (...) (23 years ago, 28-Mar-02, to lugnet.cad.dat.parts.primitives)

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