Name: LEGO Technic Bucket Wheel Excavator 42055 Construction Toy
Brand: LEGO
SKU: 4MVLW87VL968
Price: 1170 CAD
Availability: InStock
Rating: 4.5 (91 reviews)

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LEGO Technic Bucket Wheel Excavator 42055 Construction Toy

<div>LEGO Technic Bucket Wheel Excavator 42055 Construction Toy</div>

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Features a massive build with impressive dimensions.

Offers a large number of pieces at a low cost.

Features a massive scale and impressive build.

Provides continuous rotation with limitations.

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

I'm new to the lego world and want to commend the designers of this set! It is an awesome build, well laid out and it just amazes me with the amount of detail they put into this set. I am halfway done and cannot wait to finish and let my son play with it, he has been helping along the way with the organizing parts for the specific steps. I love the transmission and gear layout it really was fun for us to put them together and making sure they move smoothly.

Great jobs guys!
Ken

Challenging but rewardsimg

Pretty sure this is the largest technic set made by Lego to date. Purchased this set for myself and had a blast building it. What is powered versus is what is not, starting from Base up.

Base moves forward and backward (Powered)
Base Pivots left and right (Powered)
Bottom Conveyor belt (Belt Powered - Swing is manually adjustable with knob)
Top Digging Arm (Up and Down - Manually Adjustable with Knob)
Top Digging Arm Conveyor and Bucket wheel (Powered)
Top Digging Arm has Drive and Rotate controls on top armature.top Vertical tower has knob for adjusting Digging arm height (up and Down)
Base has knob for adjust bottom conveyor belt swing from left to right along with a locking switch. 
Base also has a little tiny knob for deploying the side raid ladder (Detail is amazing).

Overall dimensions from what i can see is 11 inches deep, 16 inches tall, and 28 inches wide. Weight is around 7.6 pounds for the digger itself.

Set is a massive slow mover which is spot on with the actual digger in real life - Wanted to point this out so you are not alarmed once you put this set together and see how slow it moves, that is by design. 

The extra large motor is a neccesity for such a beastly set as this one.

Inside the Giant Box - there are bags label from 1-8
Bags 1-3 are located in the White box within the packaging
Bags 4-8 are loose in the big box
There is a complete bag #4 of grey lego pieces that are used just for the playability and is supposed to simulate debris and conveyor belt debris/material for digging (Which is an awesome touch by lego I might add - Thanks Lego)

The most intense part of the build is bag 6 (where you build the big bucket arm)

I have added a 12 oz soda can to the pictures so you can get a better judgement of the scale of this set. The Mini dump truck is the same size as the mining truck from set 42035 if you are wondering. I would recommend getting the truck from that set too as it goes very well with this set.

I was asked by a friend can you carry it by the tower top (as a handle) - Yes, you can although I feel uneasy doing it, it does seem to be very sturdy when I do carry it like that. 

Overall a very fun build and just massive and i do mean MASSIVE - Well Done Lego!

Massive Set - Probably Largest Technic set made.

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!

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!

Thoroughly enjoyed every aspect of this LEGO set, instructions are nice & clear & easy to follow. There are only 2 negatives, 
1: Forward & reverse is quite jerky as is the bucket wheel. 
2. The large LEGO pieces provided for the bucket wheel drop out the bucket late & miss the conveyor, they instead land between the wheel & the conveyor causing a jam, only the small pieces are suitable. 
This model makes the ultimate show piece in my display cabinet! 
I look forward to their next "big" creation!
Oh...& I slightly modified the drivers cab to accommodate a construction mini figure even though he's not actually to scale, looks cool though!

Brilliant!

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.

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

Jonathan, Consumer Service Specialist

I was excited to buy it, and I loved building it. I heard that it was cumbersome with the Power Functions XL motor, but that didn't matter to me. However, after building it and getting it up to speed, I found that it really isn't that fast or powerful. The motor glitches occasionally, it creeps and rotates excruciatingly slowly, and when attempting to dig any Legos, the wheel stops. This needs a more powerful motor to be able to use. Since Lego doesn't make a more powerful motor than what's included, you're stuck.

All of the PF concerns aside, it looks fantastic. I would still recommend it for the building experience and the sheer size and presentation of the finished product.

Cool, but slow

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 Construction Toy

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