Questions tagged [technic]
A more advanced form of LEGO®, allowing for the creation of more realistic working parts.
286
questions
3
votes
1answer
117 views
Issues with my LEGO Land Rover Build - Low rear
Just built the LEGO Land Rover Discovery 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 end, ...
5
votes
2answers
722 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 ...
15
votes
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 ...
3
votes
1answer
60 views
Is there a way to convert .ev3 files to .uf2 files?
I am using Lego Mindstorms EV3 Education Edition and I am wondering if there is a way to convert the default .ev3 files to .uf2 files
8
votes
2answers
777 views
Is there a way to plan and organize your LEGO project like a GitHub hosted software?
I have the idea to host, plan and maintain a LEGO project (building a MOC in several steps with different functionalities) like a software in GitHub. The project should have forks, pull requests and ...
5
votes
2answers
443 views
Large trap door - alternative to door with frame 4595708
I need to build a large trap door, the trap door 4x5 with frame 6x8 is too small for my model. Other doors/hinges seem to have too much resistance and the door doesn't fall by itself, it must be ...
4
votes
1answer
147 views
Double linear actuator boom movement
The following Technic sets
8043 (Motorized excavator)
42009 (Mobile crane)
42082 (Rough terrain crane)
42110 (Liebherr)
and likely a couple of more have a double set of linear actuators to move ...
5
votes
1answer
208 views
Trouble with 42110 transmission
I just got the 42110 and assembled bags 1 and 2. I tested everything before joining the front axle and rear axle, and the friction was quite low, not nearly high enough to get gears to skip or ...
8
votes
1answer
1k views
LEGO Submarine waterproofing functional parts (e.g. motors, RC receivers)
From my understanding, the motors and RC receivers are not waterproof. Thus, the LEGO submarine from Sariel's LEGO® Workshop rust after sometime.
So, is there any way to make the motors and RC ...
7
votes
1answer
132 views
Why do Technic beams have an odd number of holes?
Why do LEGO Technic beams tend to have an odd numbers of holes?
Is it for making it suitable for designing models? Or does the owner of The LEGO Group love either odd or even numbers?
12
votes
1answer
11k views
How can I motorize 42077 Technic Rally Car with LEGO Power Functions?
The new 42077 Technic Rally Car set looks really nice, and even has a built-in steering system which can be controlled by a gear on the top. There's also a fair bit of extra room inside, is there a ...
5
votes
2answers
120 views
Compatibility between vintage (80s/90s) Technic and current parts (motors etc)
I've recently got my old Technic out for my daughter (who's a little young for her own, but her Friends now drive around in a tank).
If I start to acquire more, and more sophisticated, motors and ...
4
votes
2answers
1k views
Electric motors - what for beginning?
I just got my first technic joblot and now I am thinking about adding motors. I already have some - cheap ones from amazon. I attached 1 axle pin to such motor with glue gun, works well except one ...
1
vote
1answer
162 views
Are these LEGO pieces original? How can I be sure?
When I enter in the code on the BrickLink site the codes come up, but there are no markings on the tires suggesting the name of the company or any code. Could it still be an original piece if this is ...
1
vote
1answer
138 views
What is the appropriate way to request a creator to add more of their designs to mochub?
There are some brilliant LEGO creators with many designs on YouTube out there who choose to remain anonymous- who put some of their designs on mochub but not others. (In particular ones relating to ...
2
votes
0answers
91 views
Gonk droid spinning saw blade
This is the Gonk Droid from set 75253 Boost Droid Commander:
The accessories for the third mission "defending the Falcon" have been added.
The right arm can punch and shoot a "laser beam".
However ...
5
votes
2answers
142 views
Why do technic bushings have a flat side and a wavy side?
Exhibit A 3713:
The near side is smooth on the circumference, but the far side has a wavy pattern. In Lego directions, the photos usually show the "orientation" of the bushing, but if I put it on the ...
3
votes
1answer
145 views
What does the +/- dial in the Lego Defender model do?
Lego today released a video showcasing the new 42110 Land Rover Defender model.
The video captions mention that it has “Lego Technic’s most sophisticated gearbox to date”, and we see 3 seemingly ...
1
vote
2answers
36 views
Fixing a not working PF L motor
Four of my PF L motors don't work. How could I make them work again? I didn't find any information about L motors, only M and XL.
6
votes
3answers
619 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, ...
8
votes
4answers
475 views
City scale connection for five-bladed helicopter rotors
I want to build a Super-Puma helicopter in city minifigure scale and form, I have the basic design planned, but I am not familiar with any five-sided technic connectors, which I will need for the ...
2
votes
1answer
48 views
How to prevent PF M-motor from springing back
I'm currently building a car with a simple 2-speed remote controlled sychronized transmission, shifted by a PF M-motor. Everything is fine except for one thing, the transmission driving ring is ...
4
votes
2answers
413 views
Can you use a beveled gear as a pinion?
I would like to use the PF servo motor for steering, however it is very large - I was playing with the idea of having it mounted vertically, and then using bevel gears to change the direction of the ...
-1
votes
1answer
92 views
Ideas to help develop a child's engineering skills?
My son is 7 yrs. old and has really creative ideas with his bricks. I see it challenging him and wonder, "How can I help develop his product engineering/design skills?" What kind of tasks can I give ...
15
votes
1answer
2k views
Which old Technic set included large yellow motor?
I am trying to find the number or some other identity of a Technic set I remember owning as a child (so it was probably bought in the 1985-1995 year range, more likely in the 80's half of it). Among ...
3
votes
0answers
202 views
Any cheap Technic sets with a good variety of parts?
I want to start building a module like GBC mini loop 001, but when I check the part list some are very hard to get. How should I get started?
BTW, I got a very big set, Bucket Wheel Excavator 420555,...
4
votes
2answers
321 views
How can I improve my rackless steering design?
I am trying to build a vehicle with a sturdy steering mechanism powered by the servo motor. When I was a kid I did this all the time with a rack and pinion design, but now I don't have any of the rack ...
3
votes
2answers
166 views
Technic Piece needs identifying
I need some of this part but I’m struggling to find any sets they came in:
3
votes
3answers
1k views
Why isn't the new LEGO CV joint available on Bricklink or Brickowl?
In the new 4x4 X-treme Off-Roader set 42099 there are 2 new, sturdier CV joint pieces that I would like to have. If I search for 42099 on Bricklink I don't see a list of pieces included in the set. I ...
2
votes
2answers
182 views
Technic beam centering for beam with even length
I design stereo camera housing for robotics (3d printing). I want the housing to be able to connect to both LEGO Classic and LEGO Technic blocks. I designed 2 groups of 4x4 holes/pins on the bottom/...
3
votes
1answer
211 views
Problem-shooting on 8070 “Super Car” with Power Functions
I have recently bought a used Lego Technic car (8070 Supercar). It was not fully built, and from the instructions I learned that it was fully built except for approximately the last 10 steps. I ...
-1
votes
1answer
183 views
Arduino-izing LEGO Technic - and now I need some ideas for the Lego Service Truck 8071
I am starting a project - Arduino-izing LEGO Technic - and now I need some ideas for a car / vehicle to choose.
This project starts out as a quest to find a way to combine the ease of LEGO Technic ...
2
votes
2answers
206 views
Lego Technic 60C01 Bore size
I was wondering what the bore size is off the 60C01 clutch gear as I was unable to find it anywhere. Also, what is the pitch of such gear?
12
votes
4answers
23k 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 ...
5
votes
1answer
161 views
Pin Connector 62462 vs 75535
I wonder what is the purpose of the slot in the 62462 pin connector? What can it be used for, beside from help with part separation?
Part 62462 (2005-present) is newer than 75535 (1995-2008), but the ...
4
votes
0answers
165 views
How to build an arch that is angled out of Lego?
I am currently working on a MOC for the USS Orville and I am trying to figure out the engines. I have gone through a couple of iterations on my current version, but it always buckles under its own ...
4
votes
2answers
442 views
LEGO Technic Interface A
A few days ago, a friend offered me one set 9750 LEGO Technic Interface A with the Interface Card and Cable (IBM compatible) but without software.
Can someone share the installation software (LEGO ...
4
votes
1answer
444 views
How do I connect a LEGO wheel to axles so it can be powered?
I have a growing LEGO collection, which started with a lot of parts from the generic 10697-1 'LEGO Classic Large Creative Box' set. Sometime later, I bought a bunch of wheels, part numbers being: ...
4
votes
1answer
382 views
Metal Spring for LEGO MOC Simple Suspension
What is the most appropriate dimension (e.g. 20mm x 3.33mm, 5N/mm) of the metal spring for this LEGO MOC Simple Suspension so that it will not cause damage to the LEGO part surrounding it?
4
votes
1answer
219 views
LEGO 42095 wheels going opposite directions
My son just finished the 42095 Remote-Controlled Stunt Racer and the two wheels go in opposite directions. Have checked and rebuilt and still can’t get it running in the same direction. Can anyone ...
4
votes
1answer
105 views
How to debug gears in the Bucket Wheel Excavator?
My 8 year old is just finishing the Bucket Wheel Excavator. He turned the motor on and there is a significant clicking noise. It looks as though the top gear noted in the picture gets stuck. Not sure ...
4
votes
1answer
173 views
I'd like to build a mechanism to press buttons on a remote control. What is a good basic approach to use?
I have a small remote control like device with about 11 buttons. The centers of each button are placed about 1.1cm apart, and each are about 0.7cm in diameter (this means about 0.4cm between the edges)...
3
votes
2answers
128 views
Has LEGO ever been used in an assembly line or a manufacturing process?
With LEGO Technic and LEGO Mindstorms becoming ever more sophisticated, I wonder if it has ever been used in a real commercial setting to automate parts of an assembly line or manufacturing / research ...
5
votes
2answers
133 views
Any (small) Lego Technic parts not in whole units?
This is aimed at building a GBC module, not to reproduce an actual engine.
I need a piston type construction with stroke length of 3 units, which means a crankshaft radius of 1 1/2 units. Are there ...
12
votes
2answers
229 views
Is it possible to dismantle and refurbish an original 870 Technic motor?
I have a couple of ancient 870 motors (the 4.5v ones) that run but don't sound great. I've looked for, but can't find, a guide on how to dismantle them. I'd like to either get in there and clean/...
1
vote
1answer
118 views
What is this piece? 2 axle and 1 pin?
I've been looking around for this piece, google images etc, cannot find it. Any ideas on a part number?
0
votes
0answers
61 views
Is there any software except SR 3D Builder with the ability to simulate the interaction of gears that doesn't require scripting?
I'm aware that one can do that in LDCad but with scripting.
Should I invest my time in learning SR 3D Builder or is there any other option? It's just not a very intuitive software for me but I might ...
11
votes
3answers
915 views
Has anyone created a analogue LEGO clock that runs time accurately?
I've seen someone on YouTube create a LEGO Clock with all the wheels and a pendulum, but I was wondering if there is any project or building instructions available to build such a clock with an ...
8
votes
4answers
319 views
How can I assemble 2 opposing gears so that the axle rotations are perfectly parallel?
Due to the way all the modern LEGO gears are perfectly quarter-turn symmetrical, there doesn't appear to be any way to assembly 2 opposing gears such that I get a 2 perfectly parallel axles.
This ...
8
votes
2answers
340 views
Has this building technique been used in an official set?
One of my favorite building techniques is to place a Technic pin into the anti-studs of a brick. This allows two bricks to attach bottom-to-bottom.
It's a pretty secure connection, but I'm not sure ...
