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 CAD / Development / Organizations / LDraw / 1642
1641  |  1643
Subject: 
Re: New style of part file 3941 vs. 6143
Newsgroups: 
lugnet.cad.dev.org.ldraw
Date: 
Fri, 11 Jan 2002 20:40:38 GMT
Viewed: 
321 times
  
In lugnet.cad.dev.org.ldraw, Steve Bliss writes:
I've posted three new files on the Parts Tracker, they are at:

In the case of 6143/3941, there is a slight-but-noticeable variation
between the two related parts.  So the 6143 shortcut file could
eventually be replace by an actual part, modelling the variation.

Steve

A brief investigation of my spares reveals a more complex situation.

There are variations in three regions of this part

1) The ribs between the inner cylinder and the rim:
1A) no ribs
1B) small rectangular ribs
1C) larger triangular (rocket fin) ribs

2) The shape of the four extensions at the base which grip onto studs
2A) straight inner edge - two edged lozenge
2B) curved inner edge - four edged ring segment

3) The detail of the top end of the axle hole
3A) Axle hole rib ends flush with top surface
3B) Axle hole ribs rounded at top

The probable sequence of these changes with the colours I can confirm is

3941 (and other older un-numbered versions) : 1A 2A 3A : (suggest 3941a)
- Blue Yellow Black White Grey

Change to include small rib
3941 (number part visible under rib)        : 1B 2A 3A : (suggest 3941b)
- Red Blue Yellow Black White ClrYellow

Change to include larger rib - possibly important for trans parts
???? (number not visible on my parts)       : 1C 2A 3A : (suggest 3941c)
- ClrFluorOrange ClrFluorGreen Clear

Change to gripping extensions
3941 (number not visible on all parts)      : 1C 2B 3A : (suggest 3941d)
- Red Yellow Black White Grey Brown

Change to axle hole rib ends
6143 (number not visible on all parts)      : 1C 2B 3B : (suggest 6143)
- Red Yellow Black White Brown

So, Steve it looks like your classification includes just 3941d and 6143, but
3941-like varients are definitely not confined to transparent colours. Strange
that the part number change is linked to the smallest of variations - and the
two numbers are almost anagrams of each other.

Chris (now wishing he'd not read this posting !)



Message has 2 Replies:
  Re: New style of part file 3941 vs. 6143
 
(...) I guess it does! I've got some comments below, but for now, let's stick with the two documented part numbers. If someone wants to create these non-functional variations of the part(s), I'm ok with that. But let's not get into xxxxA, xxxxB, (...) (22 years ago, 11-Jan-02, to lugnet.cad.dev.org.ldraw)
  Re: New style of part file 3941 vs. 6143
 
(...) I've added pictures of some of these variants to my comparison galleries: (URL) the two previous pictures. One addition to Chris' excellent descriptions is that the older bottoms (2A) can be used in a SNOT function with plates; the newer (...) (20 years ago, 28-Sep-04, to lugnet.cad.dev.org.ldraw)

Message is in Reply To:
  New style of part file
 
I've posted three new files on the Parts Tracker, they are at: (3 URLs) These files are all 'shortcuts' - they don't have any code, except a reference to another part file. The reason I submitted these files is because these three parts are all (...) (22 years ago, 11-Jan-02, to lugnet.cad.dev.org.ldraw)

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