Duplo brick runner assembly

[Peter Blomberg]

The brick runners (e.g.  31202c04) are assemblies consisting of one base, four wheels, and two axles.

The base has 31202 embossed onto it and 5436 printed with black ink.
Each wheel has 31204 embossed on it.
The metal axles have no visible part numbers.

What is the part number for the chassis/base to be used in LDraw?
What is the assembly number to be used in LDRaw?
Shall the c01... follow the same logic as in BrickLink?
What u number can I use for the metal axles and which color would I make it?

Is there any special way to mark these parts as members of assemblies/shortcuts so that they do not get used outside any assembly?

[Jeff Jones]

DUPLO Parts are referenced since LDD 2.3 (Part: 23065, Ball 52mm), meaning that most likely LEGO internally has digital versions of most of their parts since a long time. Other DUPLO parts which are referenced are 71956 (DUPLO BRICKRUNNER, AXLE - which is part of an Assembly I guess), 95109 (LIPSTICK, CORE - also part of an Assembly I think) and 10888 (DUPLO TURN BRICK 2X2)

source: https://www.eurobricks.com/forum/forums/...is-thread/

[Chris Böhnke]

31202 is the design ID for the chassis. No idea what the printed number means.

Is there any special way to mark these parts as members of assemblies/shortcuts so that they do not get used outside any assembly?

Put a "~" before the name. This makes the relevant part invisible for parts bins etc.

[Magnus Forsberg]

The brick runners (e.g.  31202c04) are assemblies consisting of one base, four wheels, and two axles.

The base has 31202 embossed onto it and 5436 printed with black ink.
Each wheel has 31204 embossed on it.
The metal axles have no visible part numbers.

What is the part number for the chassis/base to be used in LDraw?
What is the assembly number to be used in LDRaw?
Shall the c01... follow the same logic as in BrickLink?
What u number can I use for the metal axles and which color would I make it?

Is there any special way to mark these parts as members of assemblies/shortcuts so that they do not get used outside any assembly?

The base is 31202.

This assy is 76139
https://brickset.com/parts/design-76139

The axle is 71956. Use colour 494, "Electric_Contact_Alloy" (in the wheel+axle assy)

The wheel+axle assy would be 71956c01

Use a ~ in the descriptions of all parts except the full assy 76139

[Peter Blomberg]

Trying to summarize:

In default colors (16, 24):
31202 ~Duplo Brickrunner Car Base  2 x  4
31204 ~Duplo Brickrunner Car Wheel
71956 ~Duplo Brickrunner Car Axle

For each wheel color:
71956c0_ ~Duplo Brickrunner Car Axle with ___ Wheels
Wheels in ___ color and axle in color 494.

76139 Duplo Brickrunner Car Base with Wheels (Is this needed at all?)
All subparts in color 16?
Is a 71956 with default colors needed?

For each wheel color:
76139c0_ Duplo Brickrunner Car Base with ___ Wheels
Base in default colors
Use matchin axle+wheel assembly 71956c0_
Keyword: BrickLink 31202c0_

[Rene Rechthaler]

For each wheel color:
71956c0_ ~Duplo Brickrunner Car Axle with ___ Wheels
Wheels in ___ color and axle in color 494.

76139 Duplo Brickrunner Car Base with Wheels (Is this needed at all?)
All subparts in color 16?
Is a 71956 with default colors needed?

because the axle is always metal, you could hardcode the axle and leave the wheels in col16. (no need for each color)
then make one fully col16 car base assembly and one for each wheel color. (base always col16)

[Peter Blomberg]

Trying to summarize again:

In default color 16:
31202 ~Duplo Brickrunner Car Base  2 x  4
31204 ~Duplo Brickrunner Car Wheel

In color 494:
71956 ~Duplo Brickrunner Car Axle

In color 16:
76139 Duplo Brickrunner Car Base with Wheels
consisting of
1x 31202 in color 16
4x 31204 in color 16
2x 71956 in color 16 (494 was hardcoded so this won't override it)

For each wheel color:
76139c0_ Duplo Brickrunner Car Base with ___ Wheels
consisting of
1x 31202 in color 16
4x 31204 in color ___
2x 71956 in color 16 (494 was hardcoded so this won't override it)
Keyword: BrickLink 31202c0_

[Peter Blomberg]

It is more complicated. There are 6 wheel colors and one of them have a pattern on the wheels.
The base/chassis has a pattern in two out of six cases.

Here is what I have:

• Part       71956      ~Duplo Brickrunner Car Axle harcoded in color 494.
  
• Part       31204      ~Duplo Brickrunner Car Wheel.
  
• Subpart 31204s01 ~Duplo Brickrunner Car Wheel - without Patternable Surface.
  
• Part       31202      ~Duplo Brickrunner Car Base  2 x  4.
  
• Subpart 31202s01 ~Duplo Brickrunner Car Base - without Patternable Surfaces.
  
• Subpart 31202s02 ~Duplo Brickrunner Car Base - Half without Patternable Surfaces.
  
• Subpart 31202s03 ~Duplo Brickrunner Car Base - Base Quarter without Patternable Surfaces.
  
• Subpart 31202s04 ~Duplo Brickrunner Car Base - Wheel Holder Quarter.
  
• Shortcut 76139     ? Duplo Brickrunner Car Base with Wheels
  

consisting of 1x 31202, 2x 71956, 4x 31204 in color 16.

• Shortcut Physical_Colour 76139c01 Duplo Brickrunner Car Base with Dark Gray Wheels
  

consisting of 1x 31202, 2x 71956, 4x 31204 in color 8. Keyword BrickLink 31202c01.

• Shortcut Physical_Colour 76139c02 Duplo Brickrunner Car Base with Very Light Bluish Gray Wheels
  

consisting of 1x 31202, 2x 71956, 4x 31204 in color 151. Keyword BrickLink 31202c02.

• Shortcut Physical_Colour 76139c03 Duplo Brickrunner Car Base with Black Wheels
  

consisting of 1x 31202, 2x 71956, 4x 31204 in color 0. Keyword BrickLink 31202c03.

• Shortcut Physical_Colour 76139c04 Duplo Brickrunner Car Base with Dark Bluish Gray Wheels
  

consisting of 1x 31202, 2x 71956, 4x 31204 in color 72. Keyword BrickLink 31202c04.

Here is what I suspect might be needed:
BrickLink 31202c05pb01: Lime wheels and patterned base

• Shortcut Physical_Colour 76139c05p01 Duplo Brickrunner Car Base with Lime Wheels and xxx Pattern
  

consisting of 1x 31202s01, 2x 71956, 4x 31204 in color 27, and pattern on base. Keyword BrickLink 31202c05pb01.

BrickLink 31202c06pb01: Patterned wheels and patterned base

• Part 31204p01 ~Duplo Brickrunner Car Wheel with xxx Pattern
  

consisting of 1x 31202s01 in color 16 and pattern on wheel.

• Shortcut Physical_Colour 76139c06p01 Duplo Brickrunner Car Base with Yellow Wheels
  

consisting of 1x 31202s01, 2x 71956, 4x 31204p01 in color 14, and pattern on base. Keyword BrickLink 31202c06pb01.

Should the default colored assembly 76139 have a tilde~ in its description? Why is 76139 needed?
Are patterns parts or shortcuts?

[Rene Rechthaler]

All single parts (Axle, Wheel, Base) are color 16.
axle and wheels should be in an axle+wheels shortcut (1 axle hardcoded 494 and 2 wheels col16)
the car base shortcuts could be just col16 base and 2 colored axle shortcuts.

are there two wheel types? 31202c03pb01/31202c03pr0001 looks like its mixed: wide wheels with print and normal thin wheels...

Are patterns parts or shortcuts? can be both, the pattern itself goes onto a single part, that patterned part can then be in a shortcut. there shouldnt be manually drawn patterns in shortcuts.

Will the wheels be standard res or hi-res? should be possible to use prims...

[Orion Pobursky]

I'll read over rest here in a bit but one thing stood out on a skim through:
Physical_Colour is depreciated. The PT will reject your part if you use it.

[Magnus Forsberg]

First of all. "Physical_Colour" is an abandoned branch of files we don't want.

Here is how I think it should be made:
Three parts; Body, Axle, Wheel (with some variants), All should be made uncoloured.

Axle. 
71956
This axle will be the base for a number of different assys (shortcut), where the axle is used coloured 494
-c01, thin wheels, no pattern
-c02, thick wheels, no pattern
-c03, thin, or thick wheels with pattern A
-c04, thin, or thick wheels with pattern B

Body
31202
-p01, body with pattern A
-p02, body with pattern B

Wheel
31204, thin wheel
-p01, Are there any thin wheels with a pattern?

Wheel
?????, thick wheel 
-p01,  thick wheel with pattern, but wheel is uncoloured, to be coloured in a later assy.

Assys 
76139, this is a uncoloured base shortcut, using a uncoloured body + uncoloured thin wheel assy c01
76139p01, uncoloured base + coloured wheel assy (grey, or any other colour)
76139p02, uncoloured base + coloured wheel assy (e.g. black)
76139p03, uncoloured base with a pattern (31202p01) + coloured wheels
76139p04, uncoloured base + coloured wheels with a pattern 71956c03.

XXXXX
-p01, uncoloured base + uncoloured thick wheel assy c01


We need to know 3 things:

• Partnumber for the thick wheel
  
• Partnumber for the assy with mixed wheels
  
• Partnumber for the assy with thick wheels
  

76139 is an assembly number. It's not possible to add a -c01 suffix to it.
(it would be like saying "CD-disc", a "compact disc-disc" )

[Jeff Jones]

https://brickset.com/parts/design-95485
https://brickset.com/parts/design-95118

[Rene Rechthaler]

Bricklink says the wide wheels have 92587
https://www.bricklink.com/v2/catalog/cat...1#T=C&C=11
do the black/black bases count as uncoloured with uncoloured wheels or black wheels?

[Magnus Forsberg]

https://brickset.com/parts/design-95485
https://brickset.com/parts/design-95118

Verified

[Magnus Forsberg]

Bricklink says the wide wheels have 92587
https://www.bricklink.com/v2/catalog/cat...1#T=C&C=11
do the black/black bases count as uncoloured with uncoloured wheels or black wheels?

92587 is a "Wheel  Ø17". Could be the right one.
95118 is "BRICKRUNNER W. 2 Ø17 WHEELS"
95485 is "BRICKRUNNER W. 4 Ø17 WHEELS"

Black wheels on a black body should use the uncoloured assy.

[Peter Blomberg]

Why does an axle with two wheels require a separate assembly when it cannot be mechanically constructed prior to its placement in its final position on the base chassis? The axle needs to be threaded through the base before the wheels are glued on. It is then not possible to detach the axle without first unglueing one of the wheels in that assembly. Seems superfluous.

[Peter Blomberg]

~Axle 71956, ~Body 31202, and ~Thin wheel 31204 have been submitted to PT as uncolored versions. The Body and the Thin wheel are subparted for easy patterning.

Bricklink 31202c01 has dark gray thin wheels on red body
Bricklink 31202c02 has very light bluish gray thin wheels on red body
Bricklink 31202c03 has black wide wheels on black body
Bricklink 31202c03pb01 has 2 thin wheels and 2 patterned wide wheels on black body
Bricklink 31202c03pb02 has 4 patterned thick wheels on black body
Bricklink 31202c04 has dark bluish gray thin wheels on red body
Bricklink 31202c05pb01 has lime thin wheels and patterned blue-violet body
Bricklink 31202c06pb01 has patterned yellow thin wheels and patterned green or patterned blue body

76139: Should the uncolored no-suffix base have the 494-colored axle? (assuming hypothetical wheel-axle assemblies are not required)

92587: Does anyone know the thickness of the wide wheels?

92587p01: Does anyone have the inner and outer diameters of the silver ring? Anything else on the pattern?

95118: Thin or wide wheels toward "front"? Is a version required where the wide wheels aren't patterned?

95485: both patterned and unpatterned versions required

Is assembly/assy the same as shortcut? LDRAW_org Unofficial_Shortcut? Is an assembly number the same as 'partnumber for assembly'?

[Magnus Forsberg]

Why does an axle with two wheels require a separate assembly when it cannot be mechanically constructed prior to its placement in its final position on the base chassis? The axle needs to be threaded through the base before the wheels are glued on. It is then not possible to detach the axle without first unglueing one of the wheels in that assembly. Seems superfluous.

Think animation.
A user might want to rotate the complete wheel+axle. It is meant to be one "movable" part.

[Magnus Forsberg]

95118: Thin or wide wheels toward "front"? Is a version required where the wide wheels aren't patterned?

95485: both patterned and unpatterned versions required

Is assembly/assy the same as shortcut? LDRAW_org Unofficial_Shortcut? Is an assembly number the same as 'partnumber for assembly'?

Yes, for both 95118 and 95485 there will always be a uncoloured base part.
When you add colour/pattern the first will be -p01

Yes, I use "assembly/assy" instead of "part" when I talk about complete Unofficial_Shortcuts.

[Peter Blomberg]

I'm wondering if/what to do with the unusual mobility of the axle-wheel assembly. It doesn't just rotate along the axis, the whole axis can tilt to enable the brickrunner make turns. Btw wide wheels cannot make that much of a turn.

   

[Gerald Lasser]

I'm wondering if/what to do with the unusual mobility of the axle-wheel assembly. It doesn't just rotate along the axis, the whole axis can tilt to enable the brickrunner make turns. Btw wide wheels cannot make that much of a turn.

May be just adding a! HELP line would do the job

[Magnus Forsberg]

May be just adding a! HELP line would do the job

Yes, please add help info, max rotated/(tilted?) axle assy.
Degree of rotation, or as a rotation matrix.

[Rene Rechthaler]

I guess the rotation is needed for the Brickrunner curves 31205 (are they anywhere?)
http://www.peeron.com/inv/parts/31205
also has 4 patterns with center stripes in different colors

It somewhat looks like there is no really flat surface at the "tread", maybe use outer torus prims for inside/outside?

The only sets with the wide wheels are modern and not brickrunner themed, but from the Cars/Planes movie sets.

[Gerald Lasser]

I think Jeff made the ramp. I would use no torus, looks pretty flat.

[Peter Blomberg]

Adding help info sounds great.

As for making an assy with the wheels in the max tilted/rotated position, I suspect that the curve track doesn't need the max tilt position since the wheels easily get stuck in the max tilt position due to the 2x4 brick enveloping chassis. Also, in intermediate positions, the brickrunner leans into the curve. In max-tilt position, such leaning is not possible.

Should leaning in centered position also be in the help lines?