LEGO Technic 42020 Twin-rotor Helicopter

LEGO Technic 42020, Twin-rotor Helicopter, depicts a compact helicopter with tandem rotors in the Technic style.

Set 42020 is part of the Technic theme and presents an aircraft subject as a mechanical build rather than a character based scene.

The build is therefore centered on Technic components, connections and the recognizable outline of a small aircraft.

It suits Technic fans who want a modest aircraft model for display, handling or comparison with other vehicles from the same theme. In a collection, it can sit among machines and transport subjects as an example of an aviation build. For play, its value lies mainly in the construction experience and the tactile qualities of a Technic model.

Inventory of set 42020

The inventory of set 42020 lists 145 pieces, spare parts excluded: 48 different lots (one shape in one color) for 47 part shapes. The box also contains 7 spare parts, for small elements that are easy to lose.

Colors of set 42020

Main color: light bluish gray, making up 32% of the parts, followed by black (27%) and blue (18%).

Part types

Most common parts in set 42020

46 of the 47 part shapes in this set have their own page on Setopedia, with their colors, element numbers and the other sets that use them. See all LEGO parts

Exclusive parts in set 42020

One part shape in set 42020 appears in no other set in the catalog, most often a printed element, a sticker or a mold specific to the model. If it gets lost, you will need to look for it individually, for example on BrickLink, rather than in another set.

Rebuilding set 42020 from another set

Share of the parts of set 42020 found in each of these similarly sized sets, counting shape, colour and quantity:

No similarly sized set goes above 53%: the model relies on a little-shared assortment, most of which has to be gathered piece by piece.

Size of set 42020 within its line

With 145 pieces, set 42020 ranks #335 out of 443 Technic sets in our database, which have an average of 658 parts. Among the 478 sets released in 2014, it ranks #205. That is less than half the average Technic set size.