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Unofficial File p/joint-8-socket-frica.dat

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File Header:

0 Friction Socket Joint-8
0 Name: joint-8-socket-frica.dat
0 Author: Tim Gould [timgould]
0 !LDRAW_ORG Unofficial_Primitive
0 !LICENSE Redistributable under CCAL version 2.0 : see CAreadme.txt

0 !HELP it moves +/-35 degrees in the horizontal plane
0 !HELP 1 4 0 0 0 0.819152 0 0.573576 0 -1 0 0.573576 0 -0.819152 joint-8-balla.dat
0 !HELP it moves 5 degrees from a vertical position
0 !HELP 1 4 0 0 0 0.996195 0 0.087156 0.087156 0 -0.996195 0 1 0 joint-8-balla.dat

0 BFC CERTIFY CCW

0 !HISTORY 2014-01-06 [timgould] Update description
0 !HISTORY 2014-03-22 [MagFors]  Complete rewrite


0 // first quarter

Status:
Needs more votes. (CX)
Size: 37148 bytes

Reviewers' certifications:

MMR1988=certify

Required (unofficial) subfiles:

p/2-4chrd.dat

Chord 0.5

Certified! (ACCCX)

Events

Related (unofficial) files:

parts/14418.dat

Plate 1 x 2 with Socket Joint-8 with Friction

2 subfiles aren't certified. (CSSX)

Events

parts/14419.dat

Plate 1 x 2 with Socket Joint-8 with Friction and Ball Joint-8

3 subfiles aren't certified. (CSSSX)

Events

parts/14704.dat

Plate 1 x 2 with Socket Joint-8 with Friction Centre

1 subfile isn't certified. (CSX)

Events

File reviews and updates:

At Mon Jan 6 00:00:10 2014, the file was initially submitted.
Submitted by: timgould
Comments:
Fixed bad BFC

======================================================================
At Mon Jan 6 00:05:07 2014, a new version of the file was submitted.
Submitted by: timgould
Comments:
Part of the new joint-8 ball and socket system (formerly known as towballs) - see http://forums.ldraw.org/read.php?19,9365,11659#msg-11659



======================================================================
At Tue Jan 7 06:25:01 2014, the following review was posted:

Reviewer: arezey
Certification: novote
Comments:
I'd prefer the primitive names to start with "Joint-8" to group them better.

======================================================================
At Wed Mar 19 17:25:06 2014, the following review was posted:

Reviewer: MagFors
Certification: hold
Comments:
This design is not correct.

If I measure it correct, I find that:
1.)
It should be possible to move the towball ~+/-35 degrees in the horizontal plane.
1 12 -24.574561 -4 -17.207293 0.819152 0 -0.573576 0 1 0 0.573576 0 0.819152 14418.dat
1 14 20 -4 0 0 0 1 0 1 0 -1 0 0 14417.dat
2.)
And if the axle on the towball is placed in a vertical position, it should be possible to move it ~+/-5 degrees.
1 12 -30 -4 0 1 0 0 0 1 0 0 0 1 14418.dat
1 14 -4 -19.923894 1.743115 0 1 0 -0.087156 0 -0.996195 -0.996195 0 0.087156 14417.dat
3.)
There should be a gap between the backside of this socket and a brick placed on top, or bottom, of it.
It isn't big, about 0.5 LDU, but easy to see.
1 12 -30 -4 0 1 0 0 0 1 0 0 0 1 14418.dat
1 14 -30 -12 0 1 0 0 0 1 0 0 0 1 3023.dat

I'm working on a rewrite, from scratch, if you don't mind, Tim.

======================================================================
At Sun Mar 23 14:30:12 2014, a new version of the file was submitted.
Submitted by: MagFors
Comments:
A total rework to allow correct movements as described above.

Existing certification-votes were deleted.
======================================================================
At Sun Mar 23 15:15:04 2014, the following review was posted:

Reviewer: MMR1988
Certification: novote
Comments:
You should use 2-4 chrds instead of 2-4 discs to avoid t-junctions.
In my opinion the top and bottom quad should be splitted to avoid the t-junction with the 2-4ndis.

======================================================================
At Sun Mar 23 15:45:03 2014, a new version of the file was submitted.
Submitted by: MagFors
Comments:
Removed t-junctions.

Existing certification-votes were deleted.
======================================================================
At Sun Mar 23 16:05:07 2014, the following review was posted:

Reviewer: MMR1988
Certification: certify
Comments:
Still some t-junctions, but I'm more than OK with it. Great Work!
For the record the faces with t-junctions to the 2-4ndis:

Line #447: 4 16 4.8 -7.75 -2 10 -7.75 -2 10 -7.75 9 4.8 -7.75 4.8
Line #448: 4 16 -4.8 -7.75 4.8 -10 -7.75 9 -10 -7.75# -2 -4.8 -7.75 -2
Line #460: 4 16 -4.8 7.75 -2 -10 7.75 -2 -10 7.75 9 -4.8 7.75 4.8
Line #461: 4 16 4.8 7.75 4.8 10 7.75 9 10 7.75 -2 4.8 7.75 -2


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