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12

The Atlantis Submarine Voyage ride at LEGOLAND Windsor has almost 100 models (albeit glued together) submerged in a 1,000,000 litre tank with 'upto 50 species of rare sharks, rays and tropical fish'. If LEGO bricks can withstand those conditions, I think you'll be fine. Most of these models are quite large (and heavy), so you may need to weigh down or ...


8

Here are all possibilities I can think of (most of them already listed in your question): Use part 10197 Technic, Axle and Pin Connector Hub with 2 Axles together with 2x 4265c Technic Bush 1/2 Smooth, one on each axle end. This will keep it snug and prevents it from moving, but the axles are, as you observed, only halfway inserted into the bricks. ...


8

I have seen a number of very creative builds with the orange brick separator. Here are some examples: Spaceship by F@bz: http://www.flickr.com/photos/fabz71/12434428513/ Mech by Lewis Meeny: http://www.flickr.com/photos/tr0jinh0rse/11318913594/ Deep Sea Explorer by Keith Reed: http://www.flickr.com/photos/keithreed/12943153094/ And my favorite is this ...


6

If you haven't seen it, Sariel's limited slip differential technique might do what you want, but it's a little different than what you are asking for: This setup doesn't provide a clean way of producing a fixed amount of torque to a wheel if it's partner is running free. It instead simply disables the differential if the wheels have been running at ...


6

Basic LEGO elements won't get damaged by water, however depending on the condition of your water source, some residue may build up on the elements after prolonged immersion. So if you are thinking about keeping them immersed for a longer time, I would suggest using distilled water.


6

I am also going to recommend Technic as the stronger support option, but I would make the case out of "normal" Lego, and then implement 2 Technic rectangular "rings" around the case at the place of your pillars, joined at the top and bottom (on the top the joint could form the handle). Make these rings or braces by overlapping Technic pieces and joining them ...


6

With children 3 and under, small parts may be a choking hazard. The sets that Lego markets to the parents of small children contain larger pieces that are easier to handle and harder to swallow (i.e. Duplo). When a Lego set recommends "ages 10 and up", it refers more to building ability and patience than safety. These sets are generally more complex and ...


5

Sorting by color is the first thing any LEGO collector will do, but soon you will find out that finding that one specific piece in a whole box of black pieces is quite difficult, and your sorting method will further differentiate between plates and bricks, SNOT pieces etc. Check out this post for more tips and details. For your particular problem I would do ...


5

According to Sariel's gear tutorial in chapter 5, Efficiency:, - the less gears, the better - the smaller gears, the better Based on this principle the first setup looks the best, but you are right that the 8 tooth gear is the weakest of all and it has the most backlash too, if any of these are valid concerns for your build. Note that gears can be ...


4

This hinge combined with a technic pin lets you easily make large trap doors. You can see a train-track-sized trap door in this model using two of these parts. In this model the trap door falls down when you retract an axle that normally holds it up. Other arrangements are possible. The beauty of this particular hinge is that it is symmetrical, so there ...


4

You might be interested in the excellent, hilarious and comprehensive Communist LEGO report. It tells you all you can expect, from the good brands to the bad brands. At a minimum, it'll get you rolling of your chair with laughter. A summary taken from the document: Brand List 2015 LEGO is a global brand and has been the subject of many copies ...


4

First of all: LEGO prices fluctuate depending on retailer (LEGO.com, Wal-Mart, Target, Toys'R'Us, etc.), so "cheapest" also depends on the time of year and the retailer you look at. Secondly, are you only interested in a PowerFunctions motor, and is the set you ask for just a vehicle to get the motor? In that case you might want to know that you can just ...


3

To add to TheBrickBlogger's suggestions, F@bz has another spaceship that I believe is worth mentioning: https://www.flickr.com/photos/fabz71/21111423905/ I succinctly (sp?) recall seeing an awesome dinosaur made almost entirely out of Brick Separators on Flickr a while back (and I believe it was called a Separatosaurus) but all my searches have been futile ...


3

As Phil noted, you can sort by both color and part before building in order to speed up the process. However, for a relatively small collection this level of sorting may be unnecessary. I would recommend sorting by part first, and then only sorting by color if needed. This feels unnatural, but the reason to sort by part first is simply that your eyes will ...


3

Well, the center diff allows the front and rear axles to turn at different speeds, which is useful to put less stress on drivetrain parts that are constantly moving around. However, for a Lego model it is probably not required, since it most likely would not move at speeds required to necessitate one. Building one in would add realism, but you would need to ...


3

Generally LEGO Technic structures (pins and beams with holes) tend to be lighter and stronger as System structures (classic bricks). The generally accepted best practice among amateur and professional LEGO builders is to have a light and strong internal structure (either Technic or other materials, like wood or steel) that can then be decorated on the ...


2

You can build your own trap door from System and Technic pieces. Use plates for the surface and frame (maybre reinforced by bricks if necessary), and attach one or more (depending on the weight and size) Technic joints underneath. I have no pieces with me at the moment, so I can't show you, but if you need clarifications, I'll look up images of the pieces ...


2

You can try this blog http://legoideas.si/ It's oriented towards Duplo, but similar designs can also be made out of standard Legos.


2

Here is a possible implementation using this exact part: Video . There are also several other solutions with different pieces if you need more inspiration or explanation: Animated GIF, 4 wheel steering, Top-down view.


2

Just like in the other question, I would recommend a Technic frame with more depth than your original idea and some plating on top of it. This project nicely illustrates how to build stable Technic structures using beams in triangle configurations.


2

There are all kinds of situations where the front and rear axle may not rotate at the same speed. Imagine for example a bicycle taking a turn while remaining vertical. When viewed from the top (using a planar projection), the bicycle rotates around a point that's at the intersection between lines perpendicular to each wheel. Here's an ASCII-art illustration ...


2

I generally only build sets of 1000+ pieces and I find knolling incredibly useful (as well as somewhat relaxing but YMMV on that). Where I find that it helps the most is familiarizing myself with all of the pieces that will be used in the next set of instructions. Sometimes it is easy to misidentify a piece from the images in the instruction book. So for ...


2

We have the same problem as outlined above. We realised that the cheap AAA batteries we bought did not make contact with the positive end of the terminals in the controller. In other words the bumpy bit at the positive end of the battery is not high enough to make contact inside the controller. Solution - buy better quality AAA batteries. They will make ...


2

Knolling is organizing objects by type, at right angles. If you enjoy spending your time doing that, then by all means, do it. However, logically, it is obvious that precisely organizing objects provides no benefit to anyone whose mind doesn't require strictly rectilinear organization of objects. First, you have to sort all the objects (in our case, ...


2

The complexity of the model and the expected time to complete it will increase with the recommended age. Lower aged sets, like the Juniors line, feature builds that rely heavily on standard stacking and more basic bricks. As the age recommendation goes up, you'll see more advanced building techniques such as offset stacking (think stair stacking), studs ...


2

I should post the answer as a comment to Phil B.'s post, but since it contains some useful content for the others, it will also be an answer. First of all Phil B. thanks for the link, that's exactly what i was looking for and i will mark it as an accepted answer. After reading the PDF, here is the summary of which blocks can we risk buying and which to ...


2

I would suggest you use 10 of either one of these: 4273 Technic, Axle and Pin Connector Toggle Joint Toothed or 4273a Technic, Axle and Pin Connector Toggle Joint Toothed - Without Slots, together with 5 equal length axles and 5 pins. Creates a sturdy pentagon. Use the pin connector hole to attach the pentagon to other structures. If you don't want ...


2

I'd say a 4265a on a 3649 are among the hardest to separate. But a 3647 is more painful due to the teeth http://rebrickable.com/parts/3749 http://rebrickable.com/parts/4265a http://rebrickable.com/parts/3647


1

The LEGO bricks themselves will be fine, but if you're adding fish and turning this into an aquarium setting you may need to perform some periodic maintenance on them to keep them looking nice... but lots of people have used LEGOs for aquarium decor with great results.


1

This depends on how deep engineering principles do you wish to teach. For simpler, shallower things, like the inherent stability of a triangle based construction versus a square based, the crawler crane already offers a lot: the relation between force and leverage, skid steering, gearing, pulleys, gearboxes, electronics. Pneumatics and shock absorbers are ...



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