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 CAD / Development / Organizations / LDraw / 1643
1642  |  1644
Subject: 
Re: New style of part file 3941 vs. 6143
Newsgroups: 
lugnet.cad.dev.org.ldraw
Date: 
Fri, 11 Jan 2002 21:25:36 GMT
Viewed: 
320 times
  
In lugnet.cad.dev.org.ldraw, Chris Dee writes:
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.

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, etc., until we have to.

You don't happen to have estimates of the years for any of these changes, do
you?

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

So much for the opaque/clear theory - unless using different molds for
opaque & clear is an approach TLC developed over time.

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

Interesting - I'm looking at one of these (from an Exploriens 6938 Scorpion
Detector), the only number is '61 16' (the 2 pairs of digits are separated
by an under-stud hollow).

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

Hmm.  Is the number visible on *any* of these parts?

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.

The anagram thing happens a lot - or at least, it seems to.

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

You did an amazing amount of research in a very short time.  Wow!

Steve



Message has 1 Reply:
  Re: New style of part file 3941 vs. 6143
 
(...) No, sorry - the bulk of this research was from (a lot of) miscellanous parts in my spares box, and I cannot be sure of the providence of many of my made up sets, so any info from them would be near worthless. (...) Unless problems with the use (...) (22 years ago, 11-Jan-02, to lugnet.cad.dev.org.ldraw)

Message is in Reply To:
  Re: New style of part file 3941 vs. 6143
 
(...) 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 (...) (22 years ago, 11-Jan-02, to lugnet.cad.dev.org.ldraw)

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