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75

This image shows the dimensions in LEGO Units. 1 Lego Unit is 1.6mm (the thickness of the plastic wall). In those units the stud's diameter is 3 (= 4.8mm).


39

This image from Brickipedia should sum it up nicely: A plate is exactly one third of a brick in height (3.2 mm as in the diagram). In other words, 3 plates stack to match the height of a brick. This is useful to know if you're short on a certain size of brick, but have enough plates of the same shape and color to cover it in height.


35

The "Extra Large" grey baseplate is 15"/38cm square, with 48 studs to a side. Alternatively, the moulded castle baseplate had a greater volume (with hight), and a base size of 32x48 studs and 6 bricks high (15"x10"/38x25cm) (in other colours as well): Tim offered up the following, also with a base size of 32x48 studs, 6 bricks high (15"x10"/38x25cm) (it ...


23

One of the smallest pieces is the detachable handle on the 1 stud gear shift element. The black part in this complete lever:


21

The screwdriver is also very small, but I'm not sure it beats the lever handle. Also, one could argue it has to be detached from the tools wheel first. But if you buy second-hand lots, there's a good chance it would be detached, and it would easily escape through small holes. Similarly, the various plumes aren't very large either:


20

LDU stands for LDraw Unit - the basic unit of measurement in LDraw, the open standard for LEGO CAD programs, and map to the "Fine" grid setting in applications such as MLCad. Common measurements include: 1 brick width/depth = 20 LDU 1 brick height = 24 LDU 1 plate height = 8 LDU 1 stud diameter = 12 LDU 1 stud height = 4 LDU A ...


18

I had guessed that smallest piece I have owned is one of these (image courtesy peeron): It really is stupidly small (so small that I've lost the only example that I possessed). However, I have since discovered that the lever weighs less, and that the screwdriver will fit through smaller holes. Update: I've recently come across some of these: It's an ...


16

Standing The smallest area you can enclose a standing minifig in is just about 4x4x4 2/3 with the roof on: To reach this limit, you need to use the panels and windows to make room for the arms and more importantly the head, which is larger than a 1x1 brick. Seated To enclose a seated minifig in the smallest space, you will need to ensure that you've ...


14

For the short answer, Duplo studs are indeed taller than twice the height of a Lego stud. And don't rely too heavily on measurements you get from ldraw (and not just for Duplo). For a really long-winded history on this... First, note that when I authored the original Duplo parts I never actually measured them with a ruler or calipers, as there was no need....


14

While LEGO uses metric nowadays, you may be interested to know that the bricks they originally copied (and bought the patent for later on) were made in the UK and thus probably used imperial measurements (although dimensions are not specified in the original patent). You may want to search for UK patent 529580 or Kiddicraft to learn more about this. There ...


13

The largest wheels I know are these (I measured 110x63 mm, including tyres), but they are quite rare (only available in one single set): Weels: 22969 "Wheel Technic Racing" Tyres: 32298 "Tyre Power Puller" The wheels itself are not that big, but if you include the tyres, they are really huge: They would probably work really well for an RC car.


12

this brick has always annoyed me, when sorting my bricks


11

if you're just counting the basal area, it seems to be the gray 48x48 baseplate:


11

If you go by Volume/Weight. This is heaviest single-element I've ever seen. It's not just plastic but it's one element made and sold by LEGO.


11

(Note: my HDD crashed recently and until I get that fixed I can't really make LDraw images. I did create one for this beforehand, but it's on the same HDD.) As jfyelle said the solution consists of using one LEGO element which has an odd ldu dimension somewhere. There is such an element, which isn't even new or particularly rare, that is, the Fence 1 x 4 x ...


11

LEGO Juniors sets use normal LEGO System bricks. In other words, they are exactly the same size as the "normal" LEGO bricks. However, the Junior sets are specifically designed for younger children. They often have large single-use pieces (for example, for walls or frames), and are generally very easy to construct. They also limit the use of small or ...


9

This tiny tiara piece is smaller than the 1x1 round plate on all sides (middle piece in my image below).


9

I found CAD files for LEGO technic axles here: https://grabcad.com/library/lego-technic-axles-1 and some gears which have holes for technic axles here: https://grabcad.com/library/lego-technic-gears-1 Using their online viewer I found the following dimensions (Which are a little inaccurate due to the limits of their online viewers tools. For more accurate ...


9

Bricklink lists it as Technic, Axle 5.5 with stop The blue number is the length of the axle. It is mentioned in the part list to distinguish axles of different lengths in a set. In this case, the length is 5.5, so yes, it is written as 5,5 because of the locale.


8

A minifigure with legs, torso, and head would be five bricks tall standing or four bricks sitting down. It's also one stud deep and two studs wide (four studs including arms) With the arms and hands extended parallel to the thighs, the arms take roughly two and half studs worth of space from the joint of the arm. The image below show's a diagram of a ...


8

The largest wheels I've seen are "Wheel 81.6x15" 2903 To show scale: There are larger ones on the Hailfire Droid but these probably aren't good for your needs:


7

Minifigure hands are very small: (picture not to scale)


7

There is another piece with an odd LDU dimension: the 1x1 bracket is 3 LDU thick. Paired with an Erling brick, which has a 4 LDU offset built in, it's a very compact way to create a 1-LDU offset, like psiaki has done here: Then it's just a matter of translating the offset into a gap between bricks using standard bracket pieces like I have done here:


7

Robert Cailliau has summarized how dimensions of LEGO bricks derive from: The base measure 0.8mm (that's where the 1.6mm already mentioned derives from) The play measures 0.1mm (for additional space between pieces) The height of studs 1.8mm It looks like the number as the same as given in other sources, but there is disagreement about the height of a stud. ...


7

An alternative is the 94.8x44 balloon tires. While they are not as big as the ones elusive suggested, I imagine they are easier to get as they have been in some recent sets. Comparison: Left: 81.6x15 Middle: 94.8x44 balloon Right: 81.6x38 balloon


6

Just measured them myself. Some of the dimensions might be just a little bit off, but I hope this suffices: NXT: Length: 111 mm Width: ~71.7 mm Height: 40 mm (extra 8 mm if you have a rechargeable battery installed) Motor: Length: ~105 mm Width: 40 mm Height: ~45 mm Ultra-sonic Sensor: Length: 44 mm Width: 44 mm Height: 30 mm Generic Sensor: ...


6

One Single Stud Lego brick is 9.6mm H by 8mm W (technically 7.8mm). So at the scale you are looking for we're searching for single stud bricks that are 28.8mm H by 24mm W. After an extensive search among multiple Lego-style building block manufacturers, I can't find any that use the dimensions we're looking for. Here is a list of companies I searched: ...


6

About 3g (2.98g) Based on a small sample of Minifigure part data provided by Bricklink, a minifigure in it's most basic form (Head, Torso Assembly and Legs Assembley) weighs about 3g. A small hairpiece or cap will add about 0.3g - 0.4g Large hairpieces/headgear can add about 0.9g - 1.0g.


6

You can derive detailed part geometry using the LDraw parts library. LDraw provides freely accessibly models for nearly every part that Lego has produced. I'd recommend parsing these parts rather than rolling you own models if you're going to be using many parts. Here is the relevant content of the file representing a 1 x 1 round plate: 1 16 0 3 0 -1 0 0 0 ...


6

I assume you mean L when you say units? Well anyhow, unless im misunderstanding, I would try these: https://www.bricklink.com/v2/catalog/catalogitem.page?P=6575 You can stack 3 of them up to get 1 and a half L If you mean 3L long instead of wide however this should still work because it has an axle hole which is 1.5 apart, it also has axle holes that are ...


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