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Unofficial File parts/766b.dat

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File Header:

0 ~Electric Plug (Type 4) Twin without Centre Plastic Pin
0 Name: 766b.dat
0 Author: Michael Heidemann [mikeheide]
0 !LDRAW_ORG Unofficial_Part
0 !LICENSE Redistributable under CCAL version 2.0 : see CAreadme.txt

0 BFC CERTIFY CCW

0 // Needs work: add some missing condlines, remove T junctions

0 !HISTORY 2011-12-22 [Steffen] corrected part geometry: moved sockets 0.5 LDU towards rear, otherwise putting one plug into another like in set 7866 does not work
0 !HISTORY 2011-12-22 [Steffen] removed central pin hole

Status:
Needs more votes. (X)
Size: 36334 bytes

Reviewers' certifications:

Steffen=novote
mikeheide=novote

Required (unofficial) subfiles:
(none)

Related (unofficial) files:
(none)

File reviews and updates:

At Tue Jan 27 23:00:13 2009, the file was initially submitted.
Submitted by: mikeheide
======================================================================
At Tue Jan 27 23:52:21 2009, the following review was posted:

Reviewer: Steffen
Certification: hold
Comments:
see my comment on
http://www.ldraw.org/cgi-bin/ptdetail.cgi?f=parts/xcable.dat

======================================================================
At Mon Feb 2 01:36:09 2009, the following review was posted:

Reviewer: Steffen
Certification: hold
Comments:
should be renamed to match 766bc01.dat
(not using "stud" in the part name)

======================================================================
At Thu Apr 30 23:14:02 2009, the following review was posted:

Reviewer: Steffen
Certification: novote
No comments were posted with this review.

======================================================================
At Thu Apr 30 23:34:02 2009, the following review was posted:

Reviewer: Steffen
Certification: certify
No comments were posted with this review.

======================================================================
At Wed Aug 3 21:10:04 2011, the following review was posted:

Reviewer: Steffen
Certification: hold
Comments:
I'm very sorry to discover this this late,
but the geometry of this part is incorrect.
Please look at this usage example:

0 ~Set 7866 Electric Train 12V Crossing Half
0 Name: 7866-half.ldr
0 Author: Steffen [Steffen]
0 Unofficial Model
0 BFC CERTIFY CW
1 16 280 16 -190 1 0 0 0 1 0 0 0 1 3710.dat
1 16 280 16 -130 1 0 0 0 1 0 0 0 1 3710.dat
1 16 170 16 -160 0 0 -1 0 1 0 1 0 0 3710.dat
1 16 190 16 -220 1 0 0 0 1 0 0 0 1 512c01.dat
1 0 -170 -24 -120 0 0 -1 0 1 0 1 0 0 3004.dat
1 0 -170 -32 -120 0 0 -1 0 1 0 1 0 0 3023.dat
1 0 -170 -40 -120 0 0 -1 0 1 0 1 0 0 3023.dat
1 0 -170 -48 -120 0 0 1 0 1 0 -1 0 0 3069b.dat
1 0 -170 0 -120 0 0 -1 0 1 0 1 0 0 3004.dat
1 16 80 0 -120 1 0 0 0 1 0 0 0 1 4515.dat
1 16 -80 0 -120 1 0 0 0 1 0 0 0 1 4515.dat
1 8 320 16 0 0 0 -1 0 1 0 1 0 0 4166.dat
1 16 240 -24 -160 1 0 0 0 1 0 0 0 1 x459b.dat
1 0 200 -32 -160 1 0 0 0 1 0 0 0 1 x868.dat
1 16 140 8 30 1 0 0 0 1 0 0 0 1 3023.dat
1 16 140 8 -30 1 0 0 0 1 0 0 0 1 3023.dat
1 16 0 8 30 1 0 0 0 1 0 0 0 1 3023.dat
1 16 0 8 -30 1 0 0 0 1 0 0 0 1 3023.dat
1 16 -140 8 30 1 0 0 0 1 0 0 0 1 3023.dat
1 16 -140 8 -30 1 0 0 0 1 0 0 0 1 3023.dat
1 0 200 -32 -160 0 0 -1 0 1 0 1 0 0 x868.dat
1 16 200 -40 -160 1 0 0 0 0 1 0 -1 0 4143.dat
1 16 170 0 -110 1 0 0 0 1 0 0 0 1 3005.dat
1 0 220 -33 -130 1 0 0 0 1 0 0 0 1 3710.dat
1 0 220 -41 -130 1 0 0 0 1 0 0 0 1 3710.dat
1 16 -80 2 -30 1 0 0 0 1 0 0 0 1 4162.dat
1 16 -80 2 30 1 0 0 0 1 0 0 0 1 4162.dat
1 16 80 2 30 1 0 0 0 1 0 0 0 1 4162.dat
1 16 80 2 -30 1 0 0 0 1 0 0 0 1 4162.dat
1 16 200 -56 -142 1 0 0 0 1 0 0 0 1 4143.dat
1 15 200 -56 -110 0 0 1 0 1 0 -1 0 0 80276.dat
1 0 200 -56 -126 0 0 -1 0 1 0 1 0 0 3704.dat
1 256 200 -56 -111 0 0 1 0 1 0 -1 0 0 70163.dat
1 0 220 -66 -130 1 0 0 0 1 0 0 0 1 3701.dat
1 16 -160 0 50 1 0 0 0 1 0 0 0 1 3228b.dat
1 16 -160 0 -50 1 0 0 0 1 0 0 0 1 3228b.dat
1 8 -160 16 0 0 0 1 0 1 0 -1 0 0 4166.dat
1 8 -320 16 0 0 0 1 0 1 0 -1 0 0 4166.dat
1 16 -160 0 0 1 0 0 0 1 0 0 0 1 3240.dat
1 16 160 0 50 1 0 0 0 1 0 0 0 1 3228b.dat
1 16 160 0 -50 1 0 0 0 1 0 0 0 1 3228b.dat
1 8 160 16 0 0 0 1 0 1 0 -1 0 0 4166.dat
1 8 0 16 0 0 0 1 0 1 0 -1 0 0 4166.dat
1 16 160 0 0 1 0 0 0 1 0 0 0 1 3240.dat
1 10 320 -7 -160 0 0 1 0 1 0 -1 0 0 766ac02.dat
1 5 327 -14.5 -160 0 1 0 0 0 -1 -1 0 0 766ac02.dat

Look at the pink and green plugs.
There are 2 problems which need to be fixed:
(a) the central receiving hole of the green plug is too big.
the central plastic pin of the pink plug must fit there snugly.
(b) when the pink plug is placed as in this example, i.e.,
correctly in the holes of the green plug, then it intersects
with the motor part.
This means that the receiving holes of the green plug are misplaced.
They need to be adjusted, so this assembly becomes possible without
intersection, as it is used this way in set 7866

======================================================================
At Wed Aug 3 21:10:05 2011, the following review was posted:

Reviewer: Steffen
Certification: hold
Comments:
it may alternatively be the case that the whole plug is modeled
too thick.
look for example at the plug in the 2x2 lightbrick.
it intersects as well.
this may be caused by 2 possible causes:
(i) the plug is too thick -OR-
(ii) the plug holes in the lightbrick are misplaced

======================================================================
At Thu Dec 22 00:50:03 2011, the following review was posted:

Reviewer: Steffen
Certification: hold
Comments:
I am currently working on correcting this error.
The receiving plug holes must be moved towards the rear by 0.5 LDU.
Otherwise, 2 plugs cannot be put one into another correctly.
This for example is the case in set 7866, which currently
cannot be built correctly.

While investigating, I noticed that the same error is present
in the currently official 766a.dat.

And while looking at that file, I noticed that that file
has an additional logic error: it does not have a central pin,
but the plug body has a hole for such a pin. This cannot be.
When LEGO produced these plugs, they did not think of central pins.
That had been added later. And when adding that pin, they also
added the holes for it in the plug at the same time.

So I'll have to re-submit 766a here.

======================================================================
At Thu Dec 22 00:55:02 2011, the following review was posted:

Reviewer: Steffen
Certification: hold
Comments:
here are some real life images of 766b.dat (with central pin)

http://en.bricker.ru/images/parts/766c28.jpg
http://i.ebayimg.com/00/$%28KGrHqEOKoYE0f7R7wBbBNc3%29O!%28yQ~~_12.JPG

======================================================================
At Thu Dec 22 00:55:02 2011, the following review was posted:

Reviewer: Steffen
Certification: hold
Comments:
again correcting the above posts: it's vice versa.

...a = with central pin
...b = without

(I got confused, because b historically came earlier than a.)


======================================================================
At Thu Dec 22 01:05:03 2011, the following review was posted:

Reviewer: Steffen
Certification: hold
Comments:
to make a long story short: I'm currently working on fixing this

======================================================================
At Thu Dec 22 01:25:02 2011, the following review was posted:

Reviewer: Steffen
Certification: hold
Comments:
yikes, I just discovered another problem:
the diameter of the central hole and pin at 766a.dat does not match...
this error has propagated into all other electric parts
which have a central pin...
have to trace down that error and correct it.

I need help here:
can someone with a caliper measure the diameters of the pins
(electric and central plastic) of 766a.dat in real life, please?

======================================================================
At Thu Dec 22 06:10:03 2011, the following review was posted:

Reviewer: cwdee
Certification: novote
Comments:
Diameter of central plastic pin = 0.120" ~= 8LDu
Diameter of shaft of metal pin = 0.125" = 8LDu
Diameter of tip of metal pin = 0.105" ~= 6.7LDu

======================================================================
At Thu Dec 22 08:55:04 2011, a new version of the file was submitted.
Submitted by: Steffen
Comments:
(a)
this part had a logical error previously:
while it had no central pin, it modeled a hole for that.
that makes no sense. the real life plug has either a pin and a hole,
or no pin and no hole.

--> removed the hole for the pin.

(b)
moved the pin holes 0.5 LDU towards rear.
Otherwise, 1 plug cannot be put into another properly.

Please do not yet certify, I'm still checking geometry consistency.

Existing certification-votes were deleted.
======================================================================
At Thu Dec 22 09:00:05 2011, the following review was posted:

Reviewer: Steffen
Certification: hold
Comments:
thank you very much, Chris, I'm currently checking geometry consistency


======================================================================
At Thu Dec 22 17:00:11 2011, a new version of the file was submitted.
Submitted by: Steffen
Comments:
completed history

Existing certification-votes were deleted.
======================================================================
At Thu Dec 22 17:00:12 2011, the following review was posted:

Reviewer: Steffen
Certification: hold
Comments:
restoring hold, still working on this

======================================================================
At Fri Jun 14 23:20:03 2013, the following review was posted:

Reviewer: mikeheide
Certification: novote
Comments:
@Steffen
Any progress on this part from your side?

======================================================================
At Wed Dec 4 18:15:04 2013, the following review was posted:

Reviewer: Steffen
Certification: hold
Comments:
depending on the solution we apply to the geometry problems of 766a.dat,
this file might need corrections, too.
so first please go to 766a.dat before editing/changing this part.

======================================================================
At Wed Dec 11 21:00:13 2013, the following review was posted:

Reviewer: Steffen
Certification: novote
Comments:
removing hold.
geometry of 766a.dat has been corrected.

there is a last remaining issue of the plug's thickness
(see there), but this improvement can also be done in a next iteration
and currently just holds up things.


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