Interested in building techniques? Then this is the tag for you.

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3
votes
2answers
110 views

Gearing down a PF XL

I'm looking for the best way to gear down a Power Function XL. I need to achieve a very slow output RPM (less than 1-2 RPM). I've tried a 625:1 gear (trough 40:8 gear). Can someone link to a well ...
3
votes
2answers
371 views

Extra pieces in my set - Eiffel Tower

I recently purchased a Eiffel Tower Architecture kit and I found it having 9 extra pieces. I know it is normal to have extras but I think the amount is a bit high. Any ideas or explanations? Does ...
3
votes
1answer
404 views

Strongest Lego beam

In the Lego house episode of James May's Toy Stories, the engineers built the beams with studs facing upwards: around 9.5 mins into http://youtube.com/watch?v=mEFPhXl3QQY How much stronger would it ...
3
votes
1answer
189 views

What pieces do I need to make suit swappers from the Lego Batman video game?

My son has asked Santa to bring him Lego Batman suit swappers to use with his minifigures, both Batman and Robin versions. Can anyone advise as to what pieces are needed for these? All help is very ...
3
votes
2answers
562 views

Suspension bridge building techniques

I am working on a suspension bridge with my sons and have encountered two problems. Our technique: 8x6 plates for the roadway 1x8 bricks (with side-holes) underneath each side of the roadway to ...
2
votes
4answers
728 views

How to put LEGO together upside down

I'm building a truck. For the transmission, I want to make it all even and symmetrical. To do that I need the pieces to stay together but they have no studs connecting so they will just fall apart. ...
2
votes
2answers
242 views

How can I make a pigglet headed LEGO figure to be a sidekick for my Gadget Hero?

I have a LEGO superhero that I painted, and he needs a sidekick. The Sidekick is a boy who has the head of a pigglet! But how do I make a Pigglet head?!?
2
votes
1answer
256 views

Has anyone just “built a tower”?

I've heard stories about it, but has anyone simply built a "tower" out of lego pieces and bricks? By a tower I mean lots of bricks on top of each other.
2
votes
1answer
137 views

How do you eliminate the gap between castle doors?

I'm building a MOC castle and want to use a pair of 1x5x7 and 1/2 stockade doors. My problem: I can't get the doors to fit flush. Either there's a 1/8 to 1/4 inch gap between them, or they overlap. ...
2
votes
4answers
489 views

Lego remote controlled cargo train not working

I've helped my son put together the Cargo Train set (60052) but now we can't get the remote control to work. It all looks like it's been assembled correctly with new batteries put in, but it doesn't ...
2
votes
2answers
80 views

How important is a center differential on a 4WD model?

I am looking to make a 4WD, single-engine powered vehicle, and I have seen others such as this which use three differentials to distribute the power to all 4 wheels: ...
2
votes
1answer
546 views

How to build a limited slip differential?

Lego provides a couple of ways for building a differential, such as this: and also provides a limited-slip gear like this: ...
2
votes
2answers
389 views

Are BanBao bricks compatible with Lego?

Does anyone has experience with BanBao bricks? BanBao World Are they compatible with Lego bricks? They have basic sets and plates which are at a good price.
2
votes
2answers
704 views

What is the best way to make a staircase?

I have built a Bat Cave from some bookcases and lego base plates. ( http://alice-yarns.co.uk/blog/2013/11/17/the-batcave-part-i/ ) I want to add staircases for the characters to move between each of ...
2
votes
2answers
3k views

Frame Rate recommended for Stop Motion?

I do Stop Motion with Legos, (LEGOs are just great for SMA,) and I was wondering (because you guys are the pros), what frame rate per second, (fps) oyu guys would recommend. I use 15, and ...
2
votes
2answers
173 views

Strongest LEGO structuce - (1) Pillars

What is the strongest LEGO structure? I am going to build a LEGO computer case. Different from Mike Schropp and greenyouse, I am planing to build an upright case. (This is a general "strongest LEGO ...
2
votes
2answers
103 views

Resources to learn useful common Mindstorms mechanical construction patterns

I'm currently working on building a small scale CNC-like (X-Z, no Y axis) machine to cut glass mosaic tiles. I decided to give it a go using my EV3 set and I'm having some trouble with the Z-axis ...
2
votes
1answer
98 views

Which combination has a lower gear friction?

I need roughly a 1:3 reduction and I see a couple of ways to achieve it: using a 8t gear and a 24t gear (1:3) using 2x 12t gears and 2x 20t gears (1:2.779) using a 16t gear and a 40t gear (1:2.5) ...
2
votes
1answer
71 views

Variable stick lengths and angles at nodes of building bricks

Is it possible to build 3D toys connecting several LEGO Bricks sticks/rods to make polyhedrons? Lengths and angles between sticks should be variable.
2
votes
2answers
163 views

Creating ski gondolas/tramway with Duplos

I've got a three year old who just came home from a ski vacation where he was enamored with the gondolas (like below). I want to make one with Duplos for him. I'm most of the way there, but have a ...
2
votes
1answer
166 views

Using motors to ring a bell?

I would like to create a motor set up so I can use it to ring a bell inside a small tower. Since I haven't used any of the current LEGO motors was wondering what the group would suggest. which ...
2
votes
1answer
98 views

Best system for lifting things without pistons

So I am Building a Big walker thing with a mining laser on bottom that can be lifted on one half and the other attached to the vehicle but I cant seem to find a way because the hooks attached to the ...
2
votes
1answer
292 views

Strongest LEGO structure - (2) Floor

What is the strongest LEGO box structure? I am going to build a LEGO computer case. Different from Mike Schropp and greenyouse, I am planing to build an upright case. (This is a general "strongest ...
2
votes
0answers
236 views

Ideas for large NXT projects [closed]

I currently have 6 NXT sets. Can anyone think of some large scale projects that I could attempt using most of the NXT bricks and pieces together?
1
vote
2answers
1k views

Where can I find LEGO Digital Designer projects for Lego Technic MOCs?

I have LEGO Technic pieces collected from multiple sets and would like to find projects on the web which I can view and build models step by step. Please advise sources where I can find these.
1
vote
2answers
87 views

Where can I find LDraw files to download for basic figures?

I would like to have a collection of simple examples for my youngsters. Only for basic LEGO bricks. Not Technics or complex and complete space stations, just some step-by-step instructions for the ...
1
vote
2answers
205 views

Question about a Lego Compatible brand

My son has a small orange and grey space ship building set. It has two astronauts with it. The logo on the bricks shows the letters "B L" on them. We're trying to find instructions online so that he ...
1
vote
2answers
116 views

What is the best way to create an authentic weatherboard wall?

I am working on a house where I want to create a weatherboard look for the outside walls. I'm not certain the best way to go about this. Currently I'm using the horizontal side of a 1x2 profile ...
1
vote
2answers
87 views

How to design ackermann steering with lego wheel bearing front?

I wanted to use a steering system based on the 11949 part: But I am not sure how to use it in an ackermann system - I would like to be able to have drive and suspension on the wheel, and this piece ...
1
vote
1answer
171 views

Issues with set 10234 book 3 pg 43

The white wing-like piece continues to pop off when placed. Has anyone figured out a fix for this or am I doing something wrong Instructions 3 & 4: src: ...
1
vote
1answer
177 views

Can I download ldraw instructions from Lego Digital Designer?

Can I download ldraw instructions from Lego Digital Designer? Is there a collection of simple examples for my youngsters. I was thinking of: houses, small animals, simple airplane, simple car, tree, ...
1
vote
1answer
183 views

How to connect chain links to the axle

In my project I want append two 21 chain links to the axle 12. Is this any axle connector with knob ending?
1
vote
1answer
141 views

Link 1 x 6 with Stoppers Part 2739b

Will Link 1 X 6 connect to Liftarm 2 Axle Holes and Pin / Crank (Part 33299)? The Link will be attached to a coke can, that needs to drive a crankshaft. 2739b from Peeron 33299 from Peeron
1
vote
1answer
298 views

Cell phone holder [closed]

Is there build instructions for an interesting cell phone holder that can be placed on a table? The holder needs to hold the phone upright and allow it to be charged at the same time.
1
vote
0answers
76 views

What is the best way to preserve a LEGO model after it has been built? [duplicate]

Possible Duplicates: How can I store LEGO bricks as long as possible? How do you store your built models for long term display? I want to preserve my sons LEGO ships after they are built. ...
0
votes
1answer
112 views

Some LEGO elements not attaching as usual

I am building a tank made of purely normal LEGO elements, which means no gears or axles or that type of stuff. I am trying to attach a 6x6 LEGO plate onto the base for support, but it is not ...
0
votes
0answers
50 views

How tall is a standard LEGO minifigure? [duplicate]

Sometimes I build towns of LEGO buildings, and occasionally the minifigures will get stuck in a low roof or underhang (pun intended). Does anyone know the height of a standard LEGO person in bricks as ...
-3
votes
1answer
179 views

Way to build LEGO spaceship with regular bricks [closed]

How do I build a spaceship without buying a spaceship set? With a limited amount of bricks, like, say 300 2x4, 100 2x2, and about 20 2x1 bricks. I'm looking for instructions.