LEGO 42121 Technic Heavy-Duty Excavator

Product Information

I enjoy the level of detail you scrutinize every aspect of design/function/cost and accuracy of the sets to their source materiel.

After they have mastered the captivating construction challenge, they explore the realistic features of the excavator. I don't have many Technic models (really just the 42039 24 Hours Race Car and 42057 Ultralight Helicopter), but I've always wanted an excavator of some kind and this looks like it will be perfect for my needs.Bought this for my kids but my husband ended up putting it together (he is in excavation as a trade). The colour of pins used is decided on what they need the connection to achieve, with no relation to matching the colour.

The LEGO Technic universe offers advanced building toys for LEGO fans ready for their next challenge. I know some purists despise the use of System parts in Technic sets, but I honestly would've preferred if they had used a System windscreen element just to be able to get something that's reasonably see-through for a figure driving the excavator. With realistic mechanisms, these rewarding sets are a great way to introduce kids to the world of engineering. I did not expect such a small model divided into four building stages, but it turned out to be a very relaxing build.I'm not a fan of System parts in Technic sets so thankfully they've been used sparingly, for the seat in the cab and to add additional texture and shaping to the bodywork. However, in the case of the set under review, the very proportions of the boom make it impossible to “close” the bucket and raise the boom without spilling the cargo. I would also say that it is quite similar to the Lego Technic 42097 Compact Crawler Crane set that I reviewed earlier.