LEGO Technic Excavator Construction Toy 42055

Product Information

Step 4 builds the structure that carries the 2 arms. During the build I wondered why there were Technic Wedge Belt Wheel (4185) sitting in different angles at the bottom. There were no belts in the inventory, so I was unclear of their use.

A third conveyer sits at the bottom of the input chute. It moves much slower than the output belts.

Rating

It's massive! The arm is 75cm long. It stands 45cm high. It's 28 cm wide. There are a lot of nice finishing touches: the walkways, handrails, lights, ladders and so on which enhance its appearance considerably. This is definitely a set that benefits from a video review so I encourage you to watch Sariel's. You can skip past the unboxing and construction to 17m 30s to see the machine in operation. The driveline for driving, turning and the small conveyer belt are also connected with these parts. Here it’s more obvious. The parts don’t hold tight to the axle but can slide. This allowing some wiggleroom when lowering and raising the big arm. After experimenting this morning, I found a simple fix for the latter problem which doesn't solve it fully but does improve things considerably: Upload an Image in the specific color if you have one and the one in the above listing is not available.

Die-hard Technic fans will want it regardless but if you are on the fence or have limited funds, there are much better Technic sets released this year that I would buy before this one. The box is the biggest I’ve ever had (42009 and 42030 being the largest yet for me). It measures 57.8 x 47.8 x 16.8 cm and weighs 5970 gram. On the front the main model.

The build – Step 6

The left-hand output conveyer in the image below can be raised and lowered using gears on the side, while the one on the right can be rotated about 180 degrees. So, how does it work? Quite cleverly as it happens, but unfortunately the mechanism is buried deep inside the machine so is impossible to photograph without a major dismantling. (Yes, I should have photo'd it before finishing it, I know...) The model uses something like 75% of the parts and, crucially, the new parts in it are used only for cosmetic purposes so if you have enough Technic laying around you might be able build the actual mechanism without resorting to dismantling the BWE or buying another set.