Questions tagged [technic]
A more advanced form of LEGO®, allowing for the creation of more realistic working parts.
438
questions
-2
votes
1
answer
122
views
Where can I find the assembly instructions of the chinese Ferrari Daytona gold/black variant?
I bought on Aliexpress a Ferrari Daytona, 1:1 compatible with the original LEGO set, but it's the black/gold variant.
I didn't receive the book, as expected, but I was unaware that the set has no PDF ...
- 97
0
votes
0
answers
101
views
Cat D11 calibration starts then stalls
My Cat D11 lego worked perfectly a few months then it stopped having full range of movements (blade, rear ripper, stairs) but still drives ok. When I try to calibrate, it starts the process but then ...
- 1
1
vote
1
answer
188
views
Calibration Freeze on D11
I've read through similar posts, but haven't seen exactly the same issue. Built it once, and froze during several calibration attempts. Stripped it all down, rebuilt it very carefully and still have ...
- 11
7
votes
1
answer
1k
views
What is this yellow bulldozer set?
In the research field of neural radiance fields, you frequently find the following yellow LEGO bulldozer, and I assume it a set. (Searching for "neural radiance fields bulldozer" will ...
- 173
3
votes
2
answers
360
views
Size of packaging of Battery Box 88015
I am interested in the dimensions of the packaging of this product. I am able to find only the dimensions of the battery box itself, but not the box.
4
votes
2
answers
216
views
Does LEGO make a electronically controlled pneumatic valve bank?
I've decided to try my hand at building a working LEGO Concrete Block Making Machine, as shown in this picture:
with the idea being that the machine will be controlled by both manual and automatic ...
- 493
3
votes
1
answer
105
views
Lego 42082 Rough Terrain Crane superstructure does not rotate easily when master selector is set to neutral
My son has been building the Lego 42082 crane and is on bag 9. I don't believe the central section is functioning properly as I believe the rings should turn much more easily by hand than ours does.
...
- 31
2
votes
0
answers
77
views
D11 Test mid build
On step 198 of D11 Technic set the instruction asks you to test the gears. When I test it, the gear switches but never runs the test to spin the right gear. It does that on each gear it tests.
I ...
- 21
1
vote
2
answers
102
views
Alternative to LEGO Education for Technic parts?
I am trying to work through the LEGO Education platform, however am stuck at where to buy a big set of gears and similar from.
There are sets of 50pcs for $40+, which is clearly a ripoff. Or 500 ...
- 111
0
votes
1
answer
119
views
Cat D11 bulldozer - should the plough and the frame be connected?
I’ve completed this and now have some remedial work to do! Can I please check though, are the two parts at the back (the ‘plough’ and the ‘frame’ with the ‘pistons’ on) supposed to be connected in any ...
- 11
0
votes
1
answer
170
views
Rotating and elevating platform
I want to build a platform that can be raised and lowered but also rotate at the same time. Tried scissors and linear actuator, etc. and other techniques but cannot figure out a way to raise and ...
- 1
2
votes
2
answers
307
views
What is this part? Grey, 3 studs long, with two pins and an axle hole [duplicate]
Grey Lego piece. Says LEGO inside piece, but no ID number.
Thank you!
3
votes
1
answer
400
views
Correct axle rotation of partially built LEGO Cat D11 Bulldozer (42131)?
Page 173, Step 205, of LEGO Cat D11 Bulldozer (42131) instructions has a step to attach two sub-assemblies. What is the correct rotation of these two axles? Is it correct if they rotate in opposite ...
- 41
1
vote
0
answers
78
views
App-Controlled Cat® D11 Bulldozer
I'm having a problem with the App-Controlled Cat® D11 Bulldozer (42131).
The option Module 2 test has disappeared from the app. How do I get it back?
- 41
3
votes
2
answers
678
views
How can I build a Lego slope of a rough 50 degree angle with preferably legal building techniques?
I am currently building a functional Lego minifigure-scaled escalator that can transition from flat platforms to stairwell. My first iteration for its guiding rail includes a slope of ~39.5 degree ...
- 313
3
votes
1
answer
197
views
Please identify this green pin
I bought the 42153 set yesterday and I got this green rare pin in bag 1.
How can this Technic pin be used?
- 796
8
votes
1
answer
236
views
Extend/retract speed of linear actuators
I am trying to find out if the linear actuators (small, large and XL) have a fixed number of rotations on the bottom axle connector in order to extend them fully?
I am guessing the small LA will take ...
- 129
2
votes
1
answer
112
views
Lego 42129 automatic suspension lift
Has anyone looked at a mod to lower the suspension on the LEGO 42129 4x4 Mercedes-Benz trail truck when the differential lock activates.
I was thinking about a few linear Actuators but never had a set ...
- 129
0
votes
0
answers
341
views
Cat D11 calibration
Once I start the calibration of the Cat D11 does anyone know how long it should take? I have let mine run for at least 10 minutes and it never completes. Should I keep it going for more time? Or is ...
- 1
2
votes
2
answers
156
views
Is it possible to control Airbus H175 Rescue Helicopter 42145 via the app?
Has anyone used a Technic Hub 88012
and not the Powered Up battery box that comes with the set?
I would love to get it controlled via the app.
- 129
3
votes
1
answer
210
views
How do I switch out a gear in the Cat D11 set without taking the set apart?
I have a fully completed Cat D11. Great build. (I have previously built the Bucket Wheel Excavator, the Rough Terrain Crane, Liebherr 9800, Airbus 175, etc.) Couldn't get through calibration. Did not ...
- 31
12
votes
1
answer
2k
views
Why are there many hidden holes in 'Monkie Kid’s Team Van' 80038?
Lego set 80038, 'Monkie Kid’s Team Van', repeatedly uses yellow Technic Brick 1 x 1 with Hole (item 654124) where it could simply use a standard 1 X 1 brick (item 300524).
For instance, in Instruction ...
- 223
-1
votes
4
answers
210
views
Are there any flat plates with beveled or sharp edges?
I'm currently making a functional minifigure-scaled escalator that ideally move like this. Progress has been made on both the stair slope and staircase design (both respectively pictured below), and ...
- 313
3
votes
1
answer
169
views
Lego 88012 hub socket type
The LEGO Technic hub 88012 has 4 sockets. Can anyone tell me what the socket types are?
I have tried to find out via LEGO Support and they directed me to this site.
I have searched the internet and ...
- 31
5
votes
1
answer
177
views
Mistake with hook holder (steering arm with round socket) on Technic Helicopter 42145
I made one small (but costly) mistake in my otherwise very satisfying build for the Airbus helicopter: at step 66, I connected the grey piece "steering arm with ball socket" the wrong way. ...
6
votes
2
answers
2k
views
Can one connect two technic pins end-to-end?
Who hasn't tried following some MOC instructions only to discover problems? This TIE Outlander build (free instructions) is neat but has several issues, the biggest of which are steps 44-46.
The ...
- 171
4
votes
1
answer
224
views
Is there a Good Replacement M Motor?
I teach robotics with technic parts and M motors. The motors I have bought on Ebay burn out quickly and fit axles poorly (either too tight or too loose). It is difficult to teach when students' motors ...
- 41
2
votes
1
answer
134
views
In the Ferrari 42143 build at Stage 85 should the yellow assembly be loose?
I have gone beyond step 85 but the yellow assembly installed then is still loose, not connected to anything and can be pulled out. I want to make sure this is right as I do not want to go much further ...
- 523
5
votes
1
answer
1k
views
Error correction after building the D11
I just finished the D11 bulldozer. The last LEGO set I built was 55 years ago, now I got this big machine and I really enjoy it!
But I have troubles with the the calibration and I think the failure is ...
- 111
7
votes
1
answer
356
views
What's inside a linear actuator?
The two linear actuators that I know, 61927c01 Linear Actuator and 92693c01 Linear Actuator Mini, have a built-in clutch (that makes a clicking sound when feeding the actuator torque when it's fully ...
- 7,794
3
votes
1
answer
166
views
Lego D11 ripper cylinder
I'm building the Lego set 42131 D11 bulldozer and my back ripper cylinders (linear actuators) are in the complete up position and it's keeping me from completing the build.
How do you get them to go ...
- 31
1
vote
0
answers
227
views
Problems with the main rotor speed in Airbus H175 (42145) set?
I'm having problems with the main rotor in "slow" position. The speed stays the same no matter what position the joystick is in. On the other hand, in "fast" position the blades ...
3
votes
1
answer
1k
views
Has anyone else had problems with the tail rotor drive shaft on the Lego Airbus Model 42145?
I am partway through this build and at step 565. I have found the drive mechanism to be very tight and have tried to loosen the drive elements as much as possible.
I have found what I think is a ...
- 523
1
vote
1
answer
680
views
What is the length of this axle? like 5L
What is the axle length of the axle circled in red like 5L
- 19
0
votes
1
answer
274
views
What is the axle length of this?
What are the lengths of the bottom axles on this picture? Like 5L
- 19
8
votes
1
answer
3k
views
Does anyone know what brick this is? Looks like half a cylinder
Red, LEGO Technic, cylinder shape and both sides slope inwards, at different gradients.
- 81
3
votes
1
answer
519
views
Is Robot Inventor 51515 future proof? [duplicate]
I need to buy one of Spike Prime or Robot Inventor 51515, but torn between the two choices. The latter is discontinued unfortunately, but is better bang for the buck with more lego pieces.
Robot ...
- 131
6
votes
3
answers
4k
views
Is it possible to re-flash the LEGO Spike Prime Hub with Mindstorms Robot Inventor Hub Firmware while retaining all functionality? And if so, how?
Unfortunately, LEGO has recently announced that after 24 years, the Mindstorms line of Robotics Kits is officially being discontinued at the end of this year. For this reason, the 51515 Robot Inventor ...
6
votes
1
answer
459
views
What do the Blue Lines in Lego 42145 (Airbus H175) step 34 mean
In Step 34 there are three dotted blue lines shown on the assembled piece. I have thoroughly examined the build so far and am pretty certain it is right but I cannot figure out what the dotted blue ...
- 523
7
votes
2
answers
695
views
Searching for a part like 48989 but without the pins
I am searching for a part like LEGO 48989, but without the 4 pins.
The manufacturer doesn't matter as long as the part is compatible with LEGO bricks.
Also, a combination of parts is ok if it has the ...
- 191
1
vote
1
answer
3k
views
Cat D11 LEGO set won't start the calibration process
As soon as I start the calibration process in the app, the gearbox jams. It doesn’t do anything, just clicks and clicks (stripping the gears). Any ideas what the cause might be?
3
votes
1
answer
199
views
Are LEGO Pneumatics gen 1 and gen 2 compatible?
I think they are at least partially compatible, but how much so? Can generation 1 and generation 2 cylinders easily and effectively be combined in one pneumatic pipe system? I.e. a set of pipes, tubes ...
- 111
1
vote
0
answers
81
views
42131 Bulldozer Testing [duplicate]
Got to the testing page and everything is working correctly except the left track is going in the opposite direction to the app animation.
Should I start again?
0
votes
0
answers
86
views
How do I disassemble Powered Up Motor XL? [duplicate]
My question is, how do you take the XL motor apart?
I tried with my knife and hands, but unfortunately, it is still whole in one piece (tabs).
I got the XL motor from the set 42099 and I would to make ...
7
votes
3
answers
326
views
How to open first version of the pneumatic cylinder? (Part no 4688c01)
I have a Lego Technic set 8040 from 1984 with the first version of the pneumatic cylinder. Unfortunately, the shaft on the cylinder broke.
Apparently the top of the cylinder (lid) is glued. Is there a ...
- 221
0
votes
1
answer
143
views
42114 (6x6 Volvo Articulated Hauler) doesn’t operate bucket and also doesn’t drive
My 42114: 6x6 Volvo Articulated Hauler drives in first gear for a moment, then stops completely; same thing with 2nd and 3rd gear. It doesn’t operate the bucket either. I suspect I forgot to add a pin ...
- 1
3
votes
1
answer
513
views
Gearbox doesn’t move when it’s in neutral - Is that normal?
I’m not sure if the gearbox is supposed to move when it’s in neutral but the gearbox only moves when it’s in drive or rear. If I made an error can someone please tell me if there is a way to fix it?
- 31
2
votes
0
answers
101
views
I just finished the typewriter set and everything works fine but the type-bar is a little higher than it should be. Is there any way of fixing it [closed]
The typewriter works perfectly fine. The only problem is the typebar being a little higher than it should be.
- 21
3
votes
1
answer
511
views
Technic pin on a pole: is it an illegal technique?
I have two 2714b pieces that I want to put together to make a longer pole. Is sliding the technic pin of one pole over the end of another pole illegal? (If it is, how else could I make a long and thin ...
- 549
9
votes
1
answer
2k
views
Extra wing pieces (21+22) in Ferrari Daytona 42143. Did I miss a step or did Lego get it wrong?
The Ferrari Daytona SP3 (42143) is supposed to have 10x 6319983 (small wing #22) and 11x 6316923 (small wing #21), both in black.
It says so on the part-list and they are in the box.
However I have 1 ...
- 1,242