LEGO Technic - Bucket Wheel Excavator - 42055

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Product Information

Height 48 cm
Width 17 cm
Depth 58.2 cm
Number of Pieces 3927
Range LEGO Technic
Material Plastic
Minimum Age 12 years
Model Number 42055
Product Type Building Blocks
Type Building Blocks
Weight 5.86 kg
Brand LEGO

Why we love this

Experience the huge Bucket Wheel Excavator! Mine on a massive scale with the colossal Bucket Wheel Excavator, including motorised tracks, conveyor belts, bucket wheel and superstructure, plus a rugged mine truck.

Enjoy building and operating this massive 2-in-1 Bucket Wheel Excavator, the largest LEGO Technic set to date! This awesome, meticulously detailed reproduction of a real-life mining excavator comes with a cool dark-blue and yellow colour scheme and an array of authentic features and functions, including hand-railed walkways, huge tracks and a detailed cab. Switch on the included Power Functions motor and you can activate the conveyor belts, rotate the massive superstructure and maneuver the colossal machine into position. Then activate the boom to lower the gigantic, digging bucket wheel and convey the mined material to the waiting mine truck. When you feel like another building challenge, rebuild it into a Mobile Aggregate Processing Plant.

Product Features:

• Features a LEGO Power Functions motor for an array of motorised functions, including forward and reverse driving, rotating bucket wheel, moving conveyor belts and rotating superstructure, plus a working bucket wheel boom.
• Also features hand-railed walkways, lights, mined-material elements and a rugged mine truck.
• Switch on the LEGO Power Functions motor and maneuver the huge tracked structure into position.
• Activate the motorised conveyor belts and bucket wheel.
• Move the joystickto rotate the massive superstructure.
• Raise and lower the huge bucket wheel boom.
• Follow the mined material from the bucket wheel to the moving conveyor belts and all the way to the waiting mine truck!
• This LEGO Technic model is designed to provide an immersive and rewarding building experience.
• This set includes over 3,900 pieces, making it the largest LEGO Technic set to date.
• 2-in-1 model: rebuilds into a Mobile Aggregate Processing Plant.
• This set offers an age-appropria te building experience for ages 11-16.
• Bucket Wheel Excavator measures over 16” (41cm) high, 28” (72cm) long and 11” (29cm) wide.
• Mobile Aggregate Processing Plant with boom retracted measures over 8” (21cm) high, 34” (88cm) long and 8” (21cm) wide, and over 12” (33cm) high with boom extended.
• Mine Truck measures over 3” (10cm) high, 7” (19cm) long and 3” (10cm) wide.

Number of Pieces: 3929

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Our customers say

LEGO Technic - Bucket Wheel Excavator - 42055 is rated 4.6 out of 5 by 68.
Rated 5 out of 5 by from Best set yet Honestly, this is the best Lego set I've ever built. Not only is it huge and complex, but it's also motorized! I've purchased bigger sets (more pieces) than this one, at a higher cost, but this offered MUCH more fun and satisfaction.
Date published: 2017-12-04
Rated 5 out of 5 by from Amazing buildning experience So, my 5 year old son got to choose any model from the lego catalogue, and he ended up selecting the largest of them all. Boys will be boys! He also had a clear idea of how to share the work, daddy builds it, and he gets to play with it! I have not build Lego technic in this scale ever before, and the it was an amazing buildning experience. The set is simply massive and delightfully complex. You have to pay close attention or suffer the consequences - I had once to back track and correct the orientation of a wheel, took some 20 min to correct. Despite being careful with and checking that I did not pinch any moving parts I still have some jerkiness in the conveyer belt, which I have not found how to correct. This is a challenging build, and there are really a lot of pieces!. I was a bit sore in the finger tips once the build was done. I absolutely adore the design with only one motor, it makes for a really intricate gear box, which was challenging to assemble and really well designed. It moves slowly yes, and I regard it as a design feature and by no means a flaw. It does not dig lego pieces well and I would rank the playability as a bit limited. But I am not the one to judge, my son absolutely loves to play with it and credit to the design it handles being played with well, even when Lightning McQueen (junior lego) gets disassembled and travels the buckets. If you enjoy Lego Technic, you need this set.
Date published: 2017-11-25
Rated 5 out of 5 by from BWE 42055 This was the most exciting and challenging build yet and I have completed many Technic sets so far. For sure the actual movement of the final model is slow and I took the advice to build it carefully and slowly to ensure it was working as intended. I am not disappointed with the look of the finished product and it has been the subject of much admiration from the non Lego fans I know!! What I am really interested in now is what this product will be superseded by; I have been trying to find out at my local store and on various forums because although I can build and rebuild many other of my models into their B model variants, I am eager to get the next 'big' challenge Lego will be offering. I know there is the monumental Taj Mahal about to be released, but I really want to stay with Technic if possible.
Date published: 2017-11-23
Rated 5 out of 5 by from Very cool but has a few twirks Very cool however it can be a little loud and cant be easily used for as in you can't really play with it but anyway some more twirks are that lego minifigures don't fit in the cockpit other than that the only other thing is that the minifigs dont fit easily between the guardrails anyway other than that it is really quite amazing!
Date published: 2017-10-30
Rated 5 out of 5 by from A mammoth build after many years away from Lego After not building any Lego for over 25 years I decided to buy this set and build with more daughter after we both admired it in a toy shop for many months. I agonised over buying it thinking it was too expensive but in my opinion the enjoyment of the build with my Daughter has been worth every cent. I must say I knew it would be big but once it all comes together it is huge!! The instruction book is huge and daunting at first but the clear instructions made most of the build a breeze. I did make a few little mistakes along the way but I believe it was just excitement of wanting to get this mammoth built! My only advice would be every time you complete a section with gears is to check they move freely and as intended as if you don't and have to go digging to solve it and can be a mission with many of the gear systems buried deep in layers. Once together and powered up there was a bit of playing around to see which gears drove what and how it all worked. The buckets could be a little more effective at picking the Lego rocks up and occasionally they spill out of the buckets or come off the conveyor belts. In summary, my Daughter and I both loved building this and I would definitely recommend it to anyone that is not sure if it is worth the purchase price.
Date published: 2017-10-22
Rated 3 out of 5 by from Interesting to build, sad to use. In terms of build, it's a good set. Takes time, has some intricate bits, and looks great. But it is ultimately let down by the engineering. The whole set attempts to run off a single motor, when it really needs two or three motors. There is far too much gearing and linkages, which result in a slow, barely working model. After pouring a fair amount of time and concentration into it, this is very disappointing. There is no pay-off. I too great care with every gear to ensure it turned freely. It is the whole thing together that is poor. Mostly the moving parts are fine, individually, but once it's all connected to the motor it just grinds to a halt. The primary conveyor belt also has an issue with the attached pieces hitting the underside, causing the belt to stop occasionally. Overall it's a good build, but useless for actual play.
Date published: 2017-10-19
Rated 5 out of 5 by from Massive build Just finished building the mammoth kit. The instructions where easy to follow if you take your time . The movements where a worry as others have said they jam and are jerky so during the building of the moving parts I made sure there was easy movement of all gears which paid off at the end as the working parts moved freely when tested. Going to try the alternative build at a later date and see how that goes. Look fordward to the next massive Lego creation hopefully with even more parts to make it a challenge to build.
Date published: 2017-10-15
Rated 4 out of 5 by from Nice model, but no T-Rex This model has kept me occupied for more than 20 hours building, and at times it has been quite the slog, something I've never found before with any Lego model. The model itself is technically brilliant, the selection gearbox to select the different operations is a real masterpiece. However having so many gears in the system gives a lot of backlash and drag, which leaves the motion jerky. The use of clutch gears was essential to prevent jams from burning out the motor, but they leave the assembly underpowered. In times gone by this model would have had several motors closer to each operation, connected to a control board which would have made the motion smoother. I'm undecided on the riot of colour now used in technic models to make piece identification easier. Finding the right piece and crosschecking the length (or just making so many models you knew sizes by experience) was part of the challenge of Technic. This feels a bit like the dumbing-down after a focus group. For me, it falls short of the best ever Lego Technic set, the T-Rex
Date published: 2017-10-14
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