Questions tagged [technic]
A more advanced form of LEGO®, allowing for the creation of more realistic working parts.
47
questions
37
votes
4
answers
11k
views
When did LEGO decide that it was okay to put a stud into a Technic hole?
At one point, LEGO didn't really support putting a stud into a Technic hole, stating that it caused too much stress on the bricks. And for a while, there were no sets where that's the case. However, ...
- 1,829
18
votes
4
answers
12k
views
LEGO Digital Designer Alternatives
I am been using LDD (LEGO Digital Designer) for my latest NXT project and noticed a major delay in building and making instructions for my Projects (My Mindstorm projects contain well over 500 pieces) ...
- 469
20
votes
8
answers
21k
views
What are the largest Technic-compatible tires on the market?
I am looking for the largest LEGO wheels with tires available to build a nice-sized RC LEGO car.
Of course I will start with the simplest prototype, but I would like to achieve a design which will ...
- 1,306
6
votes
3
answers
4k
views
Does the LEGO "Power Functions Extension Wire" (8886) work in both directions between old 9V and new Power Functions devices?
Here is the LEGO "LEGO® Power Functions Extension Wire" (8886):
We can see that the left connector can connect to old 9V electric bricks or wires and the right connector can be plugged to the new ...
- 447
9
votes
3
answers
8k
views
Is it possible to create a differential if I don't have it as a ready to use element?
I have numerous gears, axis and other elements from different Lego Technic sets.
I wonder if using them I can make a kind of a differential like this?
If not, how can I implement similar ...
- 635
11
votes
3
answers
3k
views
How can a Mindstorms robot lift something very heavy?
I have a small LEGO Mindstorms robot and it needs to lift heavy objects, but it doesn't seem possible because the motor cannot bear the load. What methods or mechanisms can I use to make the robot ...
- 111
11
votes
2
answers
7k
views
Good LEGO CAD Design Software with Technic elements and animation
I'm taking computer engineering in Gr. 11 right now and our final project is to create a robot with the first version of Mindstorms. My partner and I are making a sumo robot for the class competition. ...
- 211
21
votes
4
answers
4k
views
What tool can get the Technic pin out from a connection closed in the other end?
I'm having trouble removing these LEGO Technic pins apart from their connectors and I don't want to use carpenter tools like pliers which may damage the bricks.
What tool can get the pieces separated ...
- 425
18
votes
7
answers
8k
views
How to unplug black friction pin connectors
Black friction pin without slots connectors are common in older Technic sets. Note that these were quickly replaced by the current version with slots that is much easier to remove.
vs
Especially ...
- 1,678
16
votes
1
answer
1k
views
What are these Technic "Zapfen" ("stoppers") called in English?
What are these pieces called in English? Google translator doesn't help in this case...
- 2,155
12
votes
3
answers
1k
views
Technic Pin/Travis Brick Legal Connection?
Is seating a Travis brick on a Technic pin a legal connection? TLG has used this construction at least once (M-Tron Particular Ionizer's "rotor"), but that was in the early 90s. Will this connection ...
- 121
8
votes
1
answer
6k
views
What is the "Module" of a LEGO gear?
Module, m this indicates the tooth size and is the number of mm of
pitch circle diameter (p.c.d.) per tooth. For gears to mesh, their
modules must be equal. Gear ISO standards and design methods ...
- 1,146
6
votes
1
answer
3k
views
How to control a 88004 Servo Motor with a Raspberry Pi?
I am able to control a simple servo motor such as SG90 by using pulse-width modulation. However when it comes to controlling a 88004 LEGO Servo Motor it is simply a nightmare.
By using PWM all I ...
user4343
5
votes
1
answer
1k
views
When and why were pieces 3651 and 3652 discontinued?
Bricklink has piece 3651 as Axle and Pin Connector, while piece 3652 is Engine Piston Square 2x2. You could attach them to each other to form a piston.
Service pack 5260, Connecting Rods and Stop ...
- 1,146
8
votes
1
answer
3k
views
Any tips for aligning gears in LDD?
I'm trying to create the 42052 (Heavy Lift Helicopter), and other Technic sets. Aligning gears' teeth is relatively difficult, and the 'Hinge Align' tool rarely works. Please help!
3
votes
1
answer
315
views
Technic Rough Terrain Crane (42082) doesn't move
After first book, crane won't roll if pushed. If this normal. I know when you free soon one wheel, the other will go opposite direction, but when I try to spin all four in one direction, it locks. It ...
- 31
68
votes
4
answers
11k
views
Is it possible to build simple logic gates with LEGO mechanics?
I built a simple bitshifter in Minecraft yesterday. I wondered if something like this could be built with LEGO?
Maybe there is a possibility to build gates with rubber bands and those movable ...
- 2,155
37
votes
8
answers
30k
views
What are the best options for building a LEGO RC car?
I would like to build a remote controlled car. And if someone already has a good solution for that I would be glad to try it.
It's been a while since I had the time and material to build some LEGO ...
- 1,306
12
votes
2
answers
2k
views
What part(s) can I use to connect technic liftarms at a 90 degree angle?
Is there a way to connect the two beams in this angle and still keep the connection strong and keep the rotation the same?
- 817
12
votes
1
answer
8k
views
Virtual LEGO / Technics / Mindstorms simulation environments
I know that there are quite a few LEGO CADs floating around, but are there any physically correct simulation environments for models built with LEGO / Technic / Mindstorms parts, that would, for ...
- 283
19
votes
1
answer
2k
views
How much weight can a handle of Technic pegs and beams support?
Some Lego spaceships have handles attached, made out of Technic beam and pegs, and attached to the model using Technic bricks, pegs, and axles.
For example, 7644: MX-81 Hypersonic Operations Aircraft ...
user23
10
votes
3
answers
16k
views
Alternative to LEGO CONTROL+ app
My son just received the Liebherr R 9800 excavator 42100 LEGO set.
It would seem the Control+ app that is recommended for it simply won't work. It doesn't even connect to the blocks.
What are the ...
- 211
27
votes
6
answers
5k
views
Can an axle be removed from this Technic 'brick paradox'?
This blogpost on Technic Bricks briefly explains a few 'brick paradoxes' or dead ends. This particular model seems impossible to disassemble by hand:
How can I remove the axle without damaging/...
- 17.3k
16
votes
4
answers
37k
views
Is there a Technic set that is just an assortment of parts and not a specific vehicle?
Can I buy Technic sets that are just assortments of parts as opposed to a specific vehicle?
Background
I do research on sediment carbon cycling in lakes and I need use a rotating array of magnets to ...
- 263
14
votes
1
answer
930
views
What is the difference between these hole shapes?
I purchased an assorted bag of LEGO Technic pieces. There are pieces with axle holes, but what puzzles me is that the holes are different from what I am familiar with.
There's a piece with an ...
12
votes
4
answers
1k
views
2:1 gear ratio in stud-less Lego Technic
Is there a recognised technique to create a 2:1 gear ratio in stud-less Lego Technic?
Neither of the two methods suggested here (studded though) work.
24T/12T with a 2L x 1L axle offset does rotate, ...
- 423
6
votes
2
answers
6k
views
Pattern for vertical motion using technic lego
I have a motor and some other components that move a machine vertical on the ground. Inside the machine i need to raise a part by 5 cm, up and down.
Are there some common patterns that can move ...
- 817
16
votes
1
answer
2k
views
How can I make a precise one-way clutch using Technic elements?
I need a mechanism so that if a (NXT) motor rotates forward, it moves one gear, but the other stays still, but if it rotates backwards, the first gear does not move, but the second one does.
I found ...
- 263
12
votes
2
answers
2k
views
What are good books for building techniques of LEGO Technic
I've been searching for good resources for especially LEGO Technic. I find the Unofficial LEGO Technic Builder's Guide by Paweł “Sariel” Kmieć. The book is very good at explaining things. Beside that ...
11
votes
3
answers
3k
views
What are the torque limits of gears?
I am using Lego in the classroom to introduce students to geared machines.
As part of this I am asking them to design a winch, using a small 1.5V DC motor and a collection of the common Lego gears, i....
- 263
10
votes
1
answer
2k
views
Alternative for Technic, Gear Rack 1 x 7 with Axle and Pin Holes?
We are trying to build a MOC which requires Technic, Gear Rack 1 x 7 with Axle and Pin Holes and we don't have that. Could we build it? Or are there any alternatives?
FYI we do have Technic Gear ...
- 203
8
votes
2
answers
8k
views
Exact dimensions of studless Technic beams
I'm looking for the exact dimensions of the studless Technic beams. I found a number of answers for studded beams but there are some more aspects for the studless beams which are not covered.
I'm ...
- 325
4
votes
1
answer
1k
views
How to disassemble this small Technic turntable, combination of parts 99009 and 99010?
How should I non-destructively disassemble the following parts, when they are newly assembled?
99009 Light Bluish Gray Technic Turntable Small Bottom
99010 Black Technic Turntable Small Top
- 741
3
votes
1
answer
1k
views
What are the measurements of the different Lego instruction booklets?
I've noticed that there are at least three different sizes (eg 7.8"x5", 4"x5.8" and 7"x8"). Are there other sizes?
- 31
2
votes
0
answers
98
views
Science fair: "Can Lego's Fly" [duplicate]
I am doing my science fair on "Can legos Fly!" I am going to build a glider and test it 3 times (Independent variable). the wings will be foam. I will test it on how far it flys (Dependent variable).
...
- 41
12
votes
4
answers
10k
views
How to make a conveyor belt with LEGO parts?
I am making a small robot with an Arduino and Technic LEGO powered by stepper motors. I am planning on moving small rocks throughout my machine. Does anyone have an idea of what kind of Technic LEGO ...
- 817
10
votes
1
answer
7k
views
9398 4x4 Crawler front wheels rotate in the opposite direction to the rear wheel
We've just finished 9398 4x4 Crawler. Everything looks good, the motors work but the front wheels rotate in the opposite direction to the rear wheels, they also turn in opposite directions. What could ...
- 103
9
votes
2
answers
8k
views
LEGO Technic part Numbers
My daughter got the LEGO Technic - Service Truck set. When we looked at the instructions, we saw a different notation on parts.
eg: the beams (cross beam) it has number 5 in white circle. what does ...
- 141
8
votes
1
answer
988
views
How to speed up assembly for big LEGO technic sets (e.g. 42043 Mercedes-Benz Arocs)
Is there any ways to help speed up the assembly process when building big LEGO Technic set such as the 42043 Mercedes-Benz Arocs?
- 741
7
votes
1
answer
4k
views
Issues with my LEGO Land Rover Defender - Low rear
Just built the 42110 LEGO Land Rover Defender and found the rear of the car sitting very low on its base and the rear wheels almost touching the wheel arches.
This is very low compared to the front ...
- 71
4
votes
2
answers
471
views
Which parts have no-friction Technic axle holes?
I want to make a no (or very low) friction inline coupling for axles. The axles must turn, transmit moderate torque, and be in phase (therefore backlash must be minimal). The axles remain inline at ...
- 313
4
votes
2
answers
1k
views
What is the difference between these two Technic half bushings?
While randomly browsing some LEGO sites, I came across a weird (to me anyway) looking bushing. Its part 4265c. Below is one of the images describing it and the left one I recognize, but the right one ...
- 568
3
votes
2
answers
604
views
My 9398 crawler going in reverse way
I built 9398 crawler set and everything seemed OK.
However, when I moved the RC tumbler up, the crawler went back, and when I moved it down, the crawler went forward.
On the battery box I saw ...
- 169
2
votes
1
answer
257
views
Are there any LEGO sets that have these two parts?
Are there any LEGO sets that have the following parts:
Part 57518 (Link Tread Wide with Two Pin Holes)
Part 15035 / 18405 / 95292 (Large Shock Absorber with Very Hard Spring)
- 741
2
votes
2
answers
2k
views
What's the maximum pressure one airtank can withstand and how to tell its limit?
I bought a airtank and using it to support many v2 pneumatic cylinders, while I'm using a v1 pump and one motor to pump air to this air tank. Since another airtank or a lego pressure gauge is very ...
- 55
2
votes
1
answer
503
views
Which LEGO set is best suited to build robots?
My goal is to build some educational robot kits for kids and so I'd like to know if there are any LEGO sets that let you build almost anything or can you only can build the specific model that the ...
- 165
1
vote
1
answer
676
views
LEGO Large Shock Absorber alternatives
Are there cheaper alternatives to Large Shock Absorber with Very Hard Spring (Part No. 15035 / 18405 / 95292 / 95292c01)?
- 741