LEGO® Answers Stack Exchange
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1500 questions
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2 answers

Fan door does not close completely - Air Race Jet

After completing the Air Race Jet, I found that the upper fan door does not close completely (stopping short by about 1/2 inches) when I switch from VTOL to Flight mode. The attachment points to the pulley pieces operating the door seem correct,…
Philosopher7
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When did LEGO Minifigure Leg mold designs change?

I am trying to identify the changeover dates for different minifigure leg molds. e.g. a figure from 1978 has no visible seams on the legs figures from the late 1980s have visible seams, but it might be earlier a figure from 2018 has visible seams on…
Rambling Brick
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Are there any LEGO "MacGyvering kits" for the on-the-go LEGO fan?

I keep a small box of electronic parts in the car, for times when I get an idea I want to try out, or have a quick gizmo that I need to solve a problem. I also have a box of mechanical parts, like strings and pulleys and weights, that I'll use…
Piquan
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Lego train magnet strength

Some questions about these train magnets: https://www.bricklink.com/v2/catalog/catalogitem.page?P=73092 I'd like to know roughly how much weight two of those could lift or what force is needed to separate two of these... According to BrickLink, the…
Michael Verschaeve
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Will my mighty white rocket yellow in direct sunlight?

I recently bought the Saturn V and placed it on my windowsill where the rocket is exposed to the direct impact of sunbeams every day. Having encountered several yellowing effects on older white parts I wonder if this will speed up this unwanted…
fabian
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Are there any good Brick Labels out there?

While resorting my large quantity of LEGO bricks, I was wondering if someone had created a library or file that included labels that could be placed on the outside of containers for a large number of common and not-so-common LEGO bricks. They would…
William V.
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How do you make a triggered counted ball drop?

Is there any solution on making a drop of a counted number of balls when one ball passes through the system? For example: One ball falls into a hole on the top and ten balls (plus/minus (not important) the ball that fell in) come out. I have thought…
uncanny
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Is it worth to start with Dimensions now?

From what I know Lego will cancel the Dimensions game soon. Right now it is possible to find on ebay very cheap starter kits. Is it still possible to play the game after Lego is closing down all activities or is a Lego server essential for the game…
fabian
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Is it possible to determine the approximate age of these bricks only by seeing their injection points?

Is it possible to determine the approximate age of these bricks only by seeing their injection points?
fabian
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Identify LEGO Dimensions pack

Can you please help me figure out which character this build pack goes with? The bag has a copyright date of 2007. I know the number on the bag doesn't matter but I noticed the copyright date might help narrow it down a bit. I've also included a…
Amber Doll
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Colored balls detectable by EV3 color sensor

I'm looking for large balls in standard Lego colors that are detectable by the EV3 color scanner. So black, white, green, brown, yellow and blue and between 5 and 10 cm. I'm aware of the Duplo balls: But they do not seem to exist for all the 7…
Michael Verschaeve
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Do all Technic bushes (3713) have the LEGO label on them?

I have just found out that many of my Technic bushes (3713) do not have "LEGO" printed on them. Does this mean they are fake? I know that many parts were produced in several variations.
daniil
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How many themes have been released by LEGO?

I would like to know the various themes, current & discontinued, that LEGO has released in brick/element form.
Major Stackings
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How to fix the 4.3V output supply of a NXT 2.0?

I have a Mindstorm NXT 2.0 from 2007 (PCB code: 62115.40H) at which the sensors except the simple "Touch sensor" are no longer working. Also the tacho-signal of the motors do no longer work. (The motors work but do not stop after e.g. 5…
Holger
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Technic Firetruck 8289 with different wheels?

I am a bit confused with the Technic firetruck set 8289. The photo on its box: clearly shows it has the wheels 56145c02: however, according to this photo from BrickLink it has 6595c01: In the parts inventory both wheels are listed, but the parts…
BalazsToth
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