Questions tagged [technic]
A more advanced form of LEGO®, allowing for the creation of more realistic working parts.
36
questions
35
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4answers
8k 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, ...
15
votes
4answers
7k 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) ...
6
votes
3answers
2k 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 ...
11
votes
2answers
5k 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. ...
19
votes
8answers
15k 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 ...
18
votes
3answers
2k 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 ...
16
votes
7answers
5k 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 ...
15
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1answer
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...
10
votes
2answers
670 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 ...
6
votes
1answer
2k 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 ...
10
votes
3answers
2k views
How can a Mindstorms robot lift something very heavy?
I have a small LEGO Mindstorms robot and I have to lift something heavy. Now it seems not possible because the motor is not strong enough.
60
votes
4answers
9k 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 ...
33
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6answers
24k 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 ...
12
votes
1answer
6k 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 ...
19
votes
1answer
1k 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 ...
14
votes
1answer
602 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 ...
13
votes
4answers
24k 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 ...
23
votes
6answers
3k 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/...
15
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1answer
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 ...
11
votes
2answers
1k 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?
10
votes
1answer
1k 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 ...
8
votes
2answers
6k 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 ...
7
votes
1answer
3k 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 ...
6
votes
2answers
4k 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 ...
4
votes
1answer
642 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
2
votes
0answers
84 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).
...
11
votes
3answers
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....
9
votes
2answers
5k 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 ...
9
votes
1answer
607 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?
8
votes
3answers
5k 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 ...
5
votes
1answer
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 ...
4
votes
2answers
765 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 ...
3
votes
1answer
180 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)
3
votes
2answers
286 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 ...
2
votes
1answer
531 views
LEGO Large Shock Absorber alternatives
Are there cheaper alternatives to Large Shock Absorber with Very Hard Spring (Part No. 15035 / 18405 / 95292 / 95292c01)?
2
votes
1answer
303 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 ...
