Technic

Compact Crawler Crane

A busy little crane that hides a lot of hand-cranked charm behind a slightly flimsy frame.

Brick Rated Score

3.5/5

Set 42097 · 2019

Pieces920

Minifigsn/a

Year2019

Set number42097

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The verdict

This is one of those sets I keep flip-flopping on, and I mean that as a compliment.

The folding, self-driving crawler with its extendable boom is genuinely satisfying to play with, and there is something lovely about a Technic build small enough to finish in an evening. But the outriggers feel wobbly under any real load, and the four-legged assembly gets tedious fast. I would hand this to a younger builder ready to graduate from click-together bricks, or a parts hoarder eyeing that pile of gears.

Best for: A first proper studless Technic build for a 9-to-13 year old moving up from System sets

The full review

What it is

The Compact Crawler Crane was the first time LEGO Technic tackled this exact style of machine, and honestly the folding trick is what got me. You crank the outriggers in, drop the boom, and the whole thing becomes a stubby little vehicle that trundles along on real rubber crawler tracks. At 920 pieces it sits at that sweet mid-size point where you get a proper Technic experience without clearing your whole weekend. When it is fully deployed with the boom and legs stretched out, it stands over 20 inches (51 cm) tall, which feels enormous for a set this affordable. There are 17 knobs and one lever to fiddle with, so once it is built you have plenty to do with your hands.

The catch

I will be straight with you though, this one has real caveats. The stabilizer legs, the very things meant to hold the crane steady, are attached so loosely that they wobble the moment you try to lift a real load, which undercuts the whole point of a crane. The build itself hits a wall in the third stage, where you assemble four identical outriggers back to back, each needing three gears, and by the second one you are just going through the motions. And because the pieces arrive loose in the box with no numbered bags, you spend the first chunk of your evening sorting 920 parts before a single beam goes together. None of it is technically clever the way the flagship sets are, so seasoned Technic builders may find it a bit thin.

Who it's for

So who lands on the happy side of this? A younger builder stepping up from regular System bricks into their first studless Technic model will get a real kick out of the moving functions and the folding gimmick, and it is forgiving enough not to frustrate them. Parts collectors should watch the price, because the gear and pin count makes it a handy donor set. If you live for genuinely intricate engineering or you want a crane that lifts with authority, though, I would let this one pass and put your money toward something meatier.

The parts story

What the build is actually like, and the pieces worth knowing about.

Building this is a gentle, steady affair rather than a brain-teaser. It splits into three sub-assemblies: a chassis that comes together quickly with very little gearing, a rotating superstructure that houses the boom, and then those four repetitive outriggers at the end. It is all modern studless construction, beams and pins rather than stacked bricks, so if you are used to System sets the technique takes a moment to click. The cabling for the hoist and the 180-degree rotating top are the most fun stretches, and there is a satisfying weight to the finished model even if the joints feel a touch loose.

On the parts front, do not come looking for brand new molds, because there are none here and only a handful of recolors. The standout is the Beam I-Frame 3x5 at 90 degrees (design 14720), which shows up in Bright Yellow for the first time in this set, eight of them, having previously only existed in grey and a 2017 red. The real draw is quantity: roughly 60 gears, a generous heap of pins, axles and connectors, and the rubber crawler track links, all of which make this a strong donor box for Technic MOC builders hunting cheap bulk mechanics.

Fun facts

01The set is a 2-in-1 design that rebuilds into a Compact Tower Crane, though LEGO left the B-model instructions out of the box entirely, so you have to download them.
02It launched at 99.99 US dollars in 2019 and, now retired, sealed copies have climbed to around 192 dollars, up roughly 92 percent from retail.
03Fully deployed it stands over 20 inches (51 cm) high, 19 inches (49 cm) long and 15 inches (40 cm) wide, big numbers for a sub-1000-piece set.
04There are 17 separate knobs plus one lever to operate all the crane's functions by hand, with no motor included.