5
votes
1answer
346 views

Is it safe to try different firmwares on EV3?

I have prepared a SD card to run Lejos on EV3, as said on Lejos Sourceforge page and I'm about to test it. What worries me - will I still be able to go back to original Firmware if something goes ...
29
votes
1answer
3k views

What is SNOT building?

I have seen reference on LEGO forums to "SNOT building". This sounds gross! Are there really squishy-sticky LEGO bricks, or what?
16
votes
2answers
522 views

Minifig rotatable legs on a stick - what is this?

What kind of piece is this? Emboss says "(c)2003 The LEGO Group" and there is a 4303 number below. I browsed Peeron a little but didn't find anything similar. There are two red handles, one rotates ...
16
votes
3answers
2k views

How do I build a sloped roof with a 60° rake?

I've seen the sloped roof on the "Winter Village Post Office" and similar using plates, and I want to build a roof with a similar angle: What should I use to ensure they are well attached?
13
votes
4answers
312 views

How can I fix a flattened gear?

I have an old small gear that somehow got flattened to an oval shape. The axle hole is too narrow to slide a bar through, although it is not completely closed shut. How can I repair this gear?
12
votes
2answers
4k views

Can I use RCX sensors and motors with the NXT brick?

I have a bunch of motors and sensors from the original Mindstorms set. It seems a shame I can't use these with the more recent NXT set. Are there any unofficial modifications that allow you to convert ...
11
votes
3answers
467 views

Why can't I reproduce this SD card box in LDD?

I've built an SD card box a few years ago. Now I am trying to reproduce it in Lego Digital Designer. However when I tried to reproduce the closed version, LDD refuses to snap it in place. In ...
11
votes
1answer
941 views

What is the best-practice for circular lego staircase construction?

Aside from using the grey key-hole shapes, I'm looking for a Lego-standard or best-practice method for building a circular Lego staircase? Requirements: 6-8 studs "wide" (from the center to outer ...
11
votes
1answer
249 views

What different series are or have there been designed primarly for girls?

My daughter loves to play with LEGO sets but she is really wants to play with pink or 'girl' LEGO. I have ordered a few of the new LEGO Friends sets but I was wondering what other LEGO themes' have ...
11
votes
1answer
479 views

Under what conditions are the Lego boardgame dice unfair, and by how much?

For Lego's board game line, they have moulded a Lego die, with a 2x2 stud pattern on each side. Obviously, weight distribution is going to be thrown off if you use a full studless plate on one side ...
10
votes
2answers
945 views

How to remove scratches from LEGO windshield parts?

I was storing my windshields from cars with other my bricks. Now they are scratched, nearly not transparent just translucent. Is there a way to sanitize transparent parts from scratches?
10
votes
2answers
320 views

How can I add additional detail to large walls?

I've seen some rather impressive castle builds over the years, and with the release of Helm's Deep I'm clearly going to be building a few myself now. As this set uses the LEGO sticker sheet to add ...
10
votes
1answer
560 views

Where can I find the LEGO fire dept. logo in high resolution or in vector format

I want print a high resolution version of the Lego fire department shield (the shield with three flames that is used on all Lego fire trucks). When I search with Google, I find mostly low resolution ...
10
votes
1answer
246 views

How much depth does the NXT battery pack add?

The NXT rechargeable battery pack does not fit flush with the back of the NXT brick like the battery cover (used with 6xAAs) does. I don't have the battery pack (yet), so I was wondering how much ...
10
votes
1answer
671 views

Why does the Erling brick have a ridge below its outward facing stud?

Why does the Erling brick (#4070) have a ridge below its outward facing stud? Whereas the more versatile and less common #87087 does not? The #87087 piece also has a better use in SNOT usage, as it ...
10
votes
3answers
1k views

Can anyone find a photo of the “LEGO bricks, not LEGOS” insert?

Debates aside; I have been told that there used to exist a message either in Lego catalogs or inserts in boxes that reads as this: The word LEGO® is a brand name and is very special to all of us ...
10
votes
1answer
1k views

What does “AFOL” mean?

I've seen the term AFOL around; for example, this site has an afol tag. What does AFOL stand for?
8
votes
2answers
1k views

Is there an official LEGO terminology for the features of basic pieces?

When I read this question I remember to regularly ask myself what the features of bricks are called. At the top are there nibbles, knobs, or studs? At the bottom are there tubes? New bricks also have ...
8
votes
1answer
831 views

What are the electrical properties of electric LEGO systems?

Several electric LEGO systems exist: LEGO Trains LEGO Technic Power Functions (PF) LEGO Mindstorms (in several versions) ...? How do these systems differ in electrical properties and which systems ...
8
votes
2answers
2k views

Do regular Lego trains fit onto Duplo tracks?

I have a small kid and a bunch of Duplo train track. (Like what's in this set.) Would "grown up" sets, like the Emerald Night or Maersk trains, work on that track? They look pretty close (the wheels ...
8
votes
2answers
1k views

How does the cost of a LEGO railroad compare to a traditional scale railroad layout?

How do the costs compare between a railroad layout constructed with LEGO trains and a nearly identical layout using traditional scale models, such as HO?
7
votes
1answer
604 views

Why is my LDD model incomplete after I export it to LDraw?

I have an LDD model that I exported to an LDraw file. When I opened it in LDView, only part of it was displayed. It looks like some parts were not exported properly. Is it normal? Why does it happen? ...
7
votes
2answers
1k views

How to sort complete sets from box of unsorted LEGO

My son has thousands of pieces of LEGO, but he has them all dumped in a box. Is there any way to figure out what sets they went to if I don't remember the names of them?
7
votes
2answers
361 views

What was the 12v AC socket for on the 7864 transformer?

The 7864 transformer had, in addition of the main regulated outlet for controlling trains and a fixed 12v DC for plugging in remote controls and lights, a third socket available which provided 12v AC. ...
7
votes
1answer
371 views

Are the molds for LEGO bricks maintained in house or is maintanance partly outsourced?

I'm a maintenance engineer myself and busy with my MBA courses with the following strategic question: what maintenance can be outsourced or not. I was wondering if Lego does all maintenance of the ...
7
votes
2answers
706 views

How do I add a light to the Red Cargo Train?

I want to add led light to the front (and probably back) of the Red Cargo Train but the shape of the light is making me wonder what brick I should use to hold the light. I've never seen these lights ...
6
votes
1answer
589 views

Are there LEGO sets designed for adults?

Other than the LEGO Architecture sets are there any other sets or series that were designed principally for an adult audience?
5
votes
2answers
283 views

Any way to create a gear+chain, like for a bike?

I would like to create a LEGO bike. I can imagine how most of it would work, but i'm stuck at the chain. I need a way for the turning pedals (at one spot) to cause the wheel (in the back) to spin ...
5
votes
3answers
706 views

What's the best way to glue/adhese the street baseplates to a plywood table?

I'm building a Lego city, and I want to permanently glue the road onto the table. But I don't want it to be "lumpy", or melt, and I want to make sure that the baseplates will not come off the table, ...
5
votes
2answers
1k views

Can I use the old 12V rails with the remote trains?

I have a bunch of old 12v track. I am looking to get my son into LEGO, but I am thinking of getting the remote set so we can expand it some more. My question is, can I connect the new track to the ...
5
votes
1answer
477 views

Strongest gear configuration

I'm building a (what I hope to be) high-speed car using two PF-XL motors together and some gearing up. However, there's a point where I have to rotate the axle with power (that comes from the 3 speed ...
5
votes
3answers
552 views

Set missing all the Minifigures and a few other parts

When I got the Quinjet set, I dug through every bag but the manufacturers forgot a few pieces and my set didn't have any minifigures. How can I get the missing minifigures and the parts I'm missing?
5
votes
1answer
983 views

Can 10153 9V train motor be powered by the Power Functions Battery pack?

I am currently making the switch to Power Functions with my Lego Train collection and am wondering if I can power the old 9v motors that I used with the metal rails, with a battery box from the power ...
5
votes
1answer
189 views

What kind of yellow is used for a typical minifigure?

I've done some research and found a basic LEGO basic colour pallet. I recognise the yellow used for yellow bricks (24, Bright Yellow, #fec400) but it doesn't seem to match the colour for minifigures ...
5
votes
1answer
559 views

New ways of connecting levels of multi-story modular buildings

Compare these two instructions from the Green Grocers and Pet Shop modular building and you may notice (other than the background colour) that the top of the walls of the buildings are both arranged ...
4
votes
1answer
315 views

How can I order an Ev3 gyro in Europe

I just bought the Ev3 kit, knowing that the gyro sensor is not included. I obviously want a gyro sensor, perhaps also the ultrasonic sensor. Is there any official channel to order them in Europe? All ...
4
votes
1answer
629 views

Where to find older sets (eg. Classic Space)?

Can people share their experiences on how they locate older sets? Have you had luck with flea markets, garage sales, thrift stores, etc.? Or is everything done through eBay and BrickLink? Any comments ...
4
votes
0answers
58 views

Can you keep blocks clutched together in big chunks? Will blocks loose their “clutch power” after years of that kind of keeping? [duplicate]

I keep my blocks of same type in big assembled chunks, for easy building and finding bricks, but I am worried, is it safe for them or will they tend to lose strength in some time (years maybe)?
4
votes
1answer
159 views

Is LEGO testing the market with the Minifigure Series?

I looks to me that LEGO is testing the market by using the Minifigure Series. It seems logical to try all kind of different themes and see which ones are gaining traction. For example: Minifigure ...
4
votes
1answer
252 views

Help Installing NXT-G On Mac 10.6.x

I'm failing to install NXT-G on Mac 10.6.x. Whatever I try seems to end up with an error saying "A required file is broken" when I try to run the IDE. Could someone talk me through the steps please? ...
3
votes
2answers
162 views

Is it possible to edit a my block input parameter value?

I have created my blocks but want to change the input parameter to a negative. Is this possible or must all the myblocks be re-written?
3
votes
3answers
603 views

Is the LEGO Midstorms EV3 software compatible with OS X yosemite?

OS X Yosemite (10.10) was just released yesterday. I want to upgrade, but I am worried that the EV3 software will be incompatible. What should I do? A. Upgrade B. Stay on OS X Mavericks (10.9)
3
votes
1answer
219 views

I bought a second hand pack of pieces and it looks like it may be a specific set

Hoping for help to identify a set of lego pieces. It definitely has a car wheel base, and the base boards are green.close
3
votes
1answer
365 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 backward, the first gear does not move, but the second one does. I found ...
3
votes
3answers
1k views

EV3 Education Edition software license

I got a new EV3 education kit. Can I install it on a several computers or does the license work on one computer only?
3
votes
1answer
329 views

What is the history of the Marvel license between LEGO and Mega Bloks?

I just recently learned that LEGO had the license to do Marvel themed blocks back in 2003. When the Iron Man films came out, Mega Bloks produced several Marvel-themed sets. Now LEGO apparently has ...
3
votes
2answers
236 views

Where are the cloth / fabric minifigure capes / cloaks in my set?

I purchased The Mines of Moria (Lego Lord of the Rings item 9473) directly from The Big Store in Legoland, Florida. When I opened it up at home, the capes / cloaks for Pippin and Boromir were ...
3
votes
1answer
394 views

I need help with a broken LEGO motor

I have a LEGO motor and it broke but I didn't know why so I took apart the LEGO motor to see if the wires were the problem. I tested the wires to see if they were working but they weren't and I can't ...
3
votes
1answer
254 views

Apart from the LEGO brick, is there any other hardware that has an NXT firmware written for it?

I am trying to find out if you can upload LEGO NXT byte-code to any other hardware, so I am just checking to see if anyone has ever written the LEGO firmware for any other hardware. Maybe hardware ...
2
votes
2answers
256 views

Vision Command and Exploration Mars software for Mindstorms RIS 2.0

I recently bought a set 3804 LEGO Mindstorms RIS (Robotics Invention System) v2.0 very well maintained but did not have the installation CD of the RCX program and IR tower. With some research on the ...

15 30 50 per page