It will take place between 7 and 13th June of 2010 in the Cultural Center in Paredes de Coura. From 7 to 9th June the event will only be open to schools and groups and from 10 to 13th June it will be open to everyone.
The visitors from all ages can count on an enormous exhibit of constructions by the members of Comunidade 0937, and also several other activities, hobbies and lots of fun.
Atr built a boat. It looks really good, doesn’t it? But when we add the fact it is filled with electronics, really swims and is controlled by a mobile through a Bluetooth (thanks to use of Mindstorms NXT), it really impresses.
Just take a look:
Longer is a real fan of construction machines and he also realizes his passion with building astonishing and fully working miniatures. Let’s have a lookon his newest creation: model of underground mining loader Sandvik LH 517L in 1:20 scale.
Model is not only perfect imaging, but also has a lot of moving parts, and looks great. It also worth to mention that designing of the moving arm took over week.
Is there still something unusual that can be built with Lego Technic? An AFOL from Czech Republic, grohl666 proves there sure is - for instance a large model of a fighter fitted with a full set of working ailerons, functional chassis and lights.
The construction, blending Technic panel with Bionicle elements in a well-considered way, is an accurate model of the Russian Su-47 Berkut technology demonstrator fighter. The plane has distinctive forward-swept wings - it should be noted that one of pioneers of this kind of solution was a Polish PWS Z-17 Sęp (Vulture) prototypical fighter developed in the early 1930’s.
Almost one meter long, the grohl’s model contains 5 motors, 3 linear actuators and 7 pneumatic cylinders - all of it to make the the canards, ailerons, rudders and elevons move, the landing gear extend and retract, and the canopy open. If you’re not impressed yet - it can even drive and steer!
Experiments can sometimes result in something pretty surprising. When I began to experiment with halftrack vehicles the result proved to be a surprising limo-truck hybrid, and to some people it resembled a hearse too.
Small as it may seem, this model is filled with mechanisms: among others, a 4-speed manual gearbox and three different types of suspension: inpendent in front and pendular bogies mixed with torsion bars in back. The last type of suspension seemed impossible to recreate with Lego bricks to me, until I remembered the elastic axles from the 8641 Jumping Giant set. The motors and the battery box are located inside the cargo space, exposed so as to appear to be a truck’s load.
Despite being very experimental, the vehicle proved to be unexpectedly manoeuvrable and pleasant to drive, as you can see from the video.
Have you ever wondered what would it be like if a very, very talented builder had a very, very large budget to buy parts for his construction? An AFOL from Holland, Ingmar Spijkhoven has just presented what can be created in such a case:
This terrific model of an american truck, similar in design to the Mack Super Liner, does something more than just look fabulously. It can drive, turn and uses a sophisticated suspension system based on the rubber axle joiners plus an Ackermann steering geometry. We can’t even roughly estimate how much money was invested in the truck, how heavy it is and how long did it take to finish. It’s apparently built with modern techniques, and with a number of relatively new parts. Moreover, the immaculate and perfectly homogeneous colour of e.g. white fragments makes us think that it has been built exclusively from brand new, specifically bought bricks. One can say that if it had a full set of working lights, many builders who planned to build a decent truck in future could give up already and turn their attention to e.g. Castle theme.
If you have recovered from amazement, here’s a little something for afters:
Yes, it’s a trailer designed specifically for this truck, and the level of workmanship it represents, along with its functionality make us consider it a rightful stand-alone construction. It looks good and matches the truck’s colour scheme, but it also has functional rear lights, a simple suspension, remotely deployed front outriggers and a simple parking brake. The entire thing is powered from a battery box hidden inside its rear part, and thus is capable of operating independently.
Ingmar’s work is very likely to represent the top level of how a truck of this size can be built with Lego bricks. With that beauty in mind, it won’t be easy to call another such vehicle a good one in the future.
The Power Functions system, introduced by the Lego company, offers very wide range of possibilities, along with a single restriction - 4 channels only, each capable of controlling two motors independently. Therefore it’s a common opinion that eight motors in a single construction are the limit of PF system’s capabilities. I did, somewhat unintentionally, create a vehicle with eleven motors, fully remote controlled with the standard PF system.
The eleven motors are:
PF XL that drives left track
PF XL that drives right track
PF Medium for steering
PF Medium that drives internal compressor
PF Medium that drives flashing lights mechanism
PF Medium that controls first pneumatic valve
PF Medium that controls second pneumatic valve
PF Medium that tilts the front blade left/right
PF Medium that rotates the crane
PF Medium that controls crane’s lower section
PF Medium that controls crane’s upper section
As you can clearly see, there are three motors more than the PF system can control. Therefore they have to be controlled by other means:
both PF XL motors are controlled like a single motor
PF Medium that drives the flashing lights mechanism is permanently on, so it needs no channel
PF Medium that drives the compressor is controlled by a pressure switch, and thus works automatically
What are all these motors used for? First of all, they can obviously move the vehicle, although in a bit unusual way. Each model’s track is driven by a single motor (a solution imposed by the model’s weight nearing 4 kilograms). The drive of each motor is transferred through a differential. Both differentials are connected by a PF Medium motors, that can rotate them both in the same direction. Thus, one track slows down while the other one speeds up - as result, the snowgroomer can turn in place and in arch as well, and it is steered as comfortably as a wheeled vehicle.
Pneumatic system is no less important. It consists of two circuits; the front one which elevates the blade and folds its wings, and the rear one which does the same to the smoothing plate. The valves of both circuits are motorized and switched remotelly. The entire system is powered from an airtank (a special Lego container for a compressed air), to which the air is provided by a compressor with 4 small pumps driven by a PF Medium motor. The compressor is fully automated thanks to a pressure switch. Such a switch is simply a PF switch, like the one found in the 8293 set, connected to a pair of small pneumatic cylinders wound up in a rubber band. When the cylinders are given a sufficiently high pressure, they overcome the rubber band and extend, turning the switch off. When the pressure drops, the rubber band forces the cylinders to retract, thus turning the switch on. It results in the compressor starting to work whenever the pressure is low, and stopping when it’s restored to a desired level.
Behind the cabin, which houses two battery boxes, there is a typical small crane, often installed on cargo trucks. It consists of three sections, two movable and one vertical, and it ends with a hook. The motors that move both crane’s sections are located inside its vertical section, which provides practically infinite freedom of the crane’s rotation, as there are only 2 wires going through its turntable. The precision of movement and strength are provided by the linear actuators - they enable the crane to lift loads up to 180 grams. You can see on the video below how easily it handles a 50-grams heavy truss module.
The last interesting function are the flashing lights. It has been achieved with another PF switch driven through an eccentric mechanism by a PF Medium motor. This is a fairly simple construction, and it can be seen in detail at the beginning of the second video. The entire model’s goal was to demonstrate how many functions are possible despite the 4 channel limit, and how the pneumatic system and linear actuators complete each other, being used for different applications. I believe this goal was achieved
Below is a video that shows the model’s functionality. For the second video, showing its chassis and internal mechanics, click here.
I know that some of you are waiting for next part of ‘Hen’s teeth’. But I think if I show something that took me three weeks to build, you will forgive me this delay.
For the last three weeks I was building a model of Iveco EuroTrakker 8×4. The effect of this build can be seen below:
I tried to combine Model Team look with functionality of typical technic model. I think I succeeded, because the model is able to move on its own and lift the tipper thanks to pneumatic.
Curious about the title? Well, it’s the best name that comes to my mind when I see the sheer size and scale of the newest creation from the LUGPol user Zbiczasty:
This impressive monster is a stunningly accurate model of the world’s largest hydraulic excavator, the Terex RH400. It’s a fully functional model, fitted with drive and steering, with precisely recreated arm’s geometry, and even the mechanism that opens the forementioned shovel. It is powered by 4 motors and 14 pneumatic cylinders, and consists of over 4 kilograms of parts! In fact, no words can show its functionality and resemblance to the original machine better than this video does:
HI.In the intrent there is a big lego city.City is divided into 2 districts.first of them is medieval, and the second is modern. The city has a subway(underground tube).population is 300 man. Pictures http://images.mocpages.com/user_images/69057/1323628312m_SPLASH.jpg
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