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These are called power parts by LEGO Technic, and they help make the models move and increase the interactivity. These are great options for young children as they can play more with the construction toy after it is finished. Check out customer reviews and videos, as often people will comment if they were able to add these kinds of parts in after building and will give instruction booklets on how you can do it too.
Although I’ve not built many Technic sets, I had a few when I was a kid and in recent years tackled the VOLVO L350F Wheel Loader. Things have changed greatly between the sets I built in the 80s to Bugatti. The new Technic system which was introduced in the early 2000s has lead to a collection of models which continue to innovate and challenge. Would I of have purchased this set, if I didn’t have the opportunity to review it? Probably not but I would be missing out on a genuinely unique LEGO experience. An experience which begins from the moment you lift the lid and feast your eyes upon its perfectly arranged boxes.
Tastes differ, and while some fans are madly in love with the designs of the recent supercar sets, others are delighted with motorised functions of the flagship builds. Whichever side you take, it’s hard to argue that any heavy LEGO Technic set is a brilliant source of pieces for future creations. 42055 Bucket Wheel Excavator released in 2016 became the biggest LEGO Technic set at the time with 3929 pieces. Now, 2 years later the Crane sets a new record of 4057 pieces. Moreover, today, 4 of the 5 largest LEGO Technic sets are available in stores: 42056 Porsche 911 GT3 RS, 42083 Bugatti Chiron, 42055 Bucket Wheel Excavator and 42082 Rough Terrain Crane. Let’s have a look at the numbers and compare these 4 massive sets:
YUMMY!!!! I love the Technicopedia Web Site! You did a lot of work, for sure. Please accept my sincere thanks for the work you did on the 8880 page. You rock! Its been so long since I built that set, I hardly remember some of the construction goodies. Seeing all these models up close and being able to look at and study the mechanics with out all the clutter (seeing the mechanisms directly) is very insightful. Sometimes, some of the functionality of these sets is not so apparent on the box's model photography. It's almost like the LEGO web site itself should contain a similar archive, or perhaps promote the functionality of the TECHNIC line of sets in a similar fashion.
Earlier this year, LEGO Technic released a $349, 3,599-piece scale model of the Chiron, but this latest creation is way more impressive. Made from more than a million pieces, it's the first fully functional, self-propelled life-size LEGO Technic car ever built. In fact, LEGO says it's the first non-glued LEGO Technic model of such complexity ever made.
P.S. I do now see that I could have bought the Rechargeable power kit 8878($75.04), the required 10vDC charger kit 8887 $21.97, and the 20" extension wire for $9.98 to achieve my goals. A total of $106.99 in addition to the $40 for the original 8293 kit). Still think Lego should have included the 20" extension to make 8293 kit much more functional out of the box. Raising from 1 star to 2.
“On the basis of this feedback we designed the next model and simultaneously started with the development of the wheels rims which are an important part of the legendary design of the car. Afterwards we visited the Porsche Development Center in Weissach as well as the Porsche GT workshop area. During intensive working phases we worked out the elements and details of the car and perfected them.”
Gears have been included within Lego Technic sets since 1977 as a way of transferring rotary power, and of gearing-up or down the speed. Gears come in several sizes: 8 tooth, 16 tooth, 24 tooth and 40 tooth spur gears; 12 tooth, 20 tooth and 36 tooth double bevel gears; and 12 tooth and 20 tooth single bevel gears. The double bevel gears are cut so they can also be meshed as spur gears. There is also a 16 tooth clutch gear, and a 24 tooth friction gear that slips when a certain amount of torque is put on it to prevent motors from damaging any parts or burning themselves out.
Take to the skies with this solid and durable set that is simple enough for younger builders, but also detailed enough to hold the attention of older builders with ease. A cheaper option than most of the products on this list, the Ultralight Helicopter is ideal for budding Master Builders to whet their appetite before moving onto more complicated builds.
The primary advantage of studless construction is the addition of new construction methods that were previously unavailable. Liftarms are exactly 1 unit width high, in contrast to studded beams, which are a non-integer multiple of one unit. It can be awkward to use studded beams in vertical structures because it is necessary to insert plates between the studded beams in order to get the holes to line up. Studless beams allow greater flexibility when building in multiple dimensions, while remaining compatible with "classic" studded beams. Some builders also believe that models constructed with studless beams look nicer than their studded counterparts.
Now- the build. I have built a number of Technic sets including the Enzo (8653), but none come close to this build, especially if you are a car fan. The build itself really mimics the process of building a car. You start with the chassis, then build the transmission, then build the engine and connect to the chassis. The mechanics of this set are amazing, especially the transmission. You then begin building the car frame separately, and eventually "marry" the body to the chassis. Then you add the rest of the body panels, complete the interior instruments and trim, and finally add the wheels. Only a set with this many pieces and this much detail can really capture the feeling of building a miniature version of the car, rather than just building a toy.
Technic sets are often characterised by the presence of special pieces, such as gears, axles, and pins. Other special pieces include beams and plates with holes in them, through which the axles could be installed.  Some sets also come with pneumatic pieces or electric motors. In recent years, Technic pieces have begun filtering down into other Lego sets as well, including the BIONICLE sets (which were once sold as part of the Technic line), as well as a great many others.
Designing with Technic panels and liftarms is never an easy task, and usually the result is either a total win or an awful failure. Sometimes stickers can transform the model’s boring look, but as I mentioned above the set of stickers for the crane is purely complimentary. The crane’s entire look is done through a very fine choice of panels completed with a wide range of small details and accessories, like this very cool fire extinguisher attached right behind the cab. There’s also a corresponding sticker right underneath it.