Name: LEGO® Technic - Bucket Wheel Excavator (42055)
Brand: LEGO
SKU: 6000196093659
Price: 329.86 CAD
Availability: OutOfStock
Rating: 4.5 (93 reviews)

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LEGO® Technic - Bucket Wheel Excavator (42055)

Magnetic<br><ul><li>Features a LEGO® Power Functions motor for an array of motorized functions, including forward and reverse driving, rotating bucket wheel, moving conveyor belts and rotating superstructure, plus a working bucket wheel boom</li><li>Also features hand-railed walkways, lights, mined-material elements and a rugged mine truck</li><li>Switch on the LEGO® Power Functions motor and maneuver the huge tracked structure into position</li><li>Activate the motorized conveyor belts and bucket wheel</li><li>Move the joystick to rotate the massive superstructure</li><li>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-appropriate 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 measures over xx” (xxcm) high, xx” (xxcm) long and x” (xxcm) wide. Mine Truck measures over 3” (10cm) high, 7” (19cm) long and 3” (10cm) wide</li></ul>

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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 color 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.

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Construction

Build

Motor

Gears

Wheels

Instructions

Size

Design

Value

Rotating

Belts

Movement

Mechanism

Track

Functionality

Power Level

Operation

Manual

Assembly

Drive

Structure

Engineering

Playability

Features smooth stages and impressive build quality.

Offers a large number of pieces at a low cost.

I love the high part count and complexity of the set. I said it took me 10 hours to build but, I built it over the course of a few weeks when I had time. I actually bought two sets so I could build the aggregate separator and have them work together. They don't. :-( The conveyor for the BWE is too low to feed the hopper on the MAS. Oh well, the kids LOVE playing with them at the kitchen table. I also bought a half gallon size plastic bag of extra "rock" pieces and put them in a glass cake pan and let the BWE scoop them up. It's a great set and I love looking at them every day as they are on display on my chest of drawers in the master bedroom. Glad the wife is long-suffering!

HUUUUGE!

LEGO

Well, having just finished the build, I can say this is a truly worthy 'Flagship' Technic set. First of all - the build. I took over 1 week, just building sections at a time. The parts come in numbered bags (1-8), thank you Lego - this really does help building. The instructions are in one HUGE book. The sections of the instructions relate to the bags. Two nice inovations in these instructions. Where small parts are added to a large section of the model, white outine 'windows' are added to highlight where the parts go - nice touch! Also, on one or two pages, the main model is greyed out, leaving only a section in plain colour to highlight the new parts. Very good! At the end of the instructions the controls are explained. This layout is also new - and very clear.
The build is complex. I managed to make a mistake on stage 4; and had to dismantle the model to put in a missed out gear wheel. I managed this twice! So; check that the axles and gears are connected and doing something before proceeding! A small criticism is that, on the build of the bucket arm (stage 6), the conveyor belt support structure is rather weak until the re-inforcing side is finished. Care is needed with this stage not to bend or break parts. When complete the structure is very strong. Also adding the bucket arm to the main structure is fiddly. Four hands might help with this stage!
When complete the kit is really impressive. I particularly like the attention to detail in this kit. Not only an operators cabin, but ladders, walkways, and lights are added all over the model. It adds a sense of scale and completeness to the model.
Value for money? Yes! Although expensive you do get a lot for your money. Apart from the fun building and playing with the set, there are a huge number of parts. I would certainly recommend this set to anyone who likes Technic Lego.

A Really Awesome Set!

Just finished this project and I have to say. WOW! Can't believe how big it was once it was done. The detail all the way down to the "flood lights" was great. I enjoy the models with a lot of gears and motorized moving parts. So if you like lots of moving parts you will really enjoy making this Lego model.

Great job Lego Designers

Based on the sheer amount of parts and the scale of this set, it's incredible value for money. 

From reading some of the other reviews I can see some are having issues with this set; this is testament to its challenge - it does work, flawlessly, if you take care to test the gear trains and moving parts as you build them. Some of the movement is slow and the bucket wheel itself sits a bit tight in its guides; may need to dismantle and adjust - to my mind the slow movement is needed to shift the sheer weight of this set with the XL motor.

Very enjoyable; especially when you're adding things to the sub-assemblies (baffled) just to find out they're there just for the details at the end! Anxious to build the alternative instructions but can't bear to disassemble it, so I suppose I'll have to buy the set again!

Buy two!

Some steps (of the roughly 670 steps) were somewhat difficult and there were about 5 small pieces (of more than 1,000) missing but I was able to steal some pieces from my other Lego projects to properly finish.     The end product looked great and functioned partially.

Lego Bucket Wheel Excavator Review

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It would have been a five star product if one tiny piece that was essential to building this thing was missing from the set. I had to order it from Lego customer service so my little girl has to wait until it arrives to finish her excavator.

Missing part

It was a fun experience to build this fantastic model. But most the fun was distroyed when I turned on the switch. It was well at the beginning, but when the upper platform turn over half round, the whole platform was blocked by something. So I took apart the whole model and find that the single wheel under the platform was block by the tail of the base. I've upload some picture. the wheel is too close to the tail of the base. When all the weight turned to the rare, the upper part would be blocked
Although there is a problem, but this design is amazing. I love it so much and maybe, I'll prepare to buy my second one.

Really fun, but a fatal problem

In one word, one big word, MASSIVE! This set is so big it is hard to comprehend the size of a real life one being any bigger. Also with so many pieces (including power functions) at such a low price this is probably the best valued set ever. If you are a budding engineer or just a technic fan this set is a must have. The little truck could have been a set in its self and i am so glad LEGO included it because it really completes the set, adding even more playability. I have a feeling any batteries I put in this thing are not going to last long though because it will be going round and around all day, at the request of my touch to please me most deeply.

So just get it. If you want it, and I know you want it.

Time to Mine

The goods:

1. Loads of parts!! Just too many parts in the box and the weight almost breaks the yellow LEGO vinyl bag. If you ordered it from Internet, give some praise to your delivery people.

2. It's not just many parts. This set contains loads of square frame parts and gears which are super useful in any MOC designs. If you want to dive into Technic building, this set is a MUST buy set.

3. Many functions. Rolling conveyor belts and bucket wheel operation are already worthwhile to make a contraption. This set also moves forward and backwards and the superstructure rotates. Although the bucket wheel elevation and lower conveyor part rotation are manual but it's not too hard to motorize it due to its sheer size!!

4. Although you can't mount a Minifigure, this model is actually a one of few Minifigure sized Technic models. The cockpit can contain a Minifigure if you modify the seat with a proper studded one. (This is a definite plus for anyone wants to play with!!)

5. The finished A model is a huge contraption but is actually very sturdy. You can carry this heavy contraption by holding the top part of the arch!! The bucket wheel arm itself is really sturdy as well. You can even wield it around without problem. 

The drawbacks.

1. Too many parts and gears: causes too much backlash and almost impossible to debug when something isn't working well. I've changed the tandem clutch wheels with 24 teeth gears to ensure smooth bucket wheel operation (see one of my pictures.) But this isn't safe especially if any mineral(or Skittles!!) stuck into some corner to hamper any motorized operation. It's gonna break rest of gears or overheat PF XL motor.

2. The backlash is severe. For example. The lower conveyor belt lock is almost invalid. Even though you engage the lock, the conveyor belt slides like +30 to -30 degrees without any serious impedance. 

3. In other words, this set is super hard to make it operate properly. Although putting parts together is not hard at all(since this model doesn't have any pneumatic hoses and threads), fitting all the parts to ensure smooth operation is a great challenge. The hints on instruction manual aren't enough. You are warned!!

4. B model instruction is only available on the Internet. Browsing through hundreds of PDF pages (especially without proper index codes!!) isn't convenient at all. 

5. The control panel has many functions. But the operation is kinda limited. You cannot mix any rotation with linear movement. i.e. The bucket wheel cannot rotate when the excavator is moving forward. A MOC project to work on!!

Although I've pointed out as many drawbacks as pros, it's not a bad model for the size. Heck, this is the largest PF motorized Technic model (excluding fan designed MOCs) so far.

Remark: You better visit Bulk Barn to play with this model properly!! Skittles!! Skittles!! more Skittles!!

Good set with a few drawbacks.

Allison - Consumer Service Specialist

As a seasoned lego builder I have an understanding how to build these Technic sets. This set is really impressive but I doesn't function as it should. The forward/reverse driving is jerky. The rotary bucket assembly jams where the 1/4 ring gears join because the ring isn't rigid enough to maintain a tight circle. The pinion gears that the bucket assembly rides on don't sit parallel to each other causing uneven load on the ring gear. I sent pictures to lego and they are sending new ring gear parts but I doubt this will fix the problem. 

During the assembly I made sure that all the gears were turning freely with no resistance as required for this type of set. I verified that everything was assembled correctly 3 times and still couldn't get this to work.

In the pictures you can see the gear tooth spacing at the connection points of the ring gear are too wide for smooth operation.

This set has exceeded Technic's limits

LEGO® Technic - Bucket Wheel Excavator (42055)

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