LEGO® Technic - Twin-rotor Helicopter (42020)

Twin-rotor Helicopter (42020)

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Description & Features+

Get your LEGO® Technic model building off to a flying start with the 2-in-1 Twin-rotor Helicopter. Featuring linked spinning rotors, an opening cargo door and cool rescue styling, this great model offers just the right level of challenge for first-time builders. It also has a turning front wheel for easy maneuvering on the ground. Rebuilds into a single-rotor helicopter.
• Features linked spinning rotors, turning front wheel, opening cargo door and a cool rescue-theme design
• Get familiar with the versatile Technic building elements
• Taxi along the ground, spin the rotors and take off
• Rotors are connected with gear wheels and spin together
• 2-in-1 model: rebuilds into a single-rotor helicopter
• Twin-rotor Helicopter measures 3” (8cm) high, 8” (22cm) long and 5” (13cm) wide


Available for Shipping to Grab & Go Locker
Available for Shipping to Canada Post
Age 5-8
Product Identifiers
Walmart Item #
31010214, 31010259

From the Manufacturer +

Ratings & Reviews+

LEGO® Technic - Twin-rotor Helicopter (42020) is rated 4.4615 out of 5 by 13.
Rated 5 out of 5 by from Good for special parts I wasn't really planning to get this set. I just happened to go to ToysRUS with my son and then decided to get something simple. I first considered a few other sets but in the end went with this one because I wanted a few parts in this set that my son could use in other projects. Like the blades and the bevel gears. In many of the advanced models I built, I am quite used to the bevel gears and the U-shaped part to put the gears at right-angles. Having two of those available in this set makes this set good for gathering such parts. Of course, it's fun for kids to rotate the knob at the back and see two blades rotating simultaneously. Note: For a 6 to 8 yr old kid this set will be easy to average even though I gave "very easy" rating from my point of view.
Date published: 2015-08-03
Rated 5 out of 5 by from this set is awesome!!!!! these are the reasons why i like it.... 1. it has cool functions.'s a 2 in 1's bigger then i expected 4.there's nothing i don't like about it 5. there's a possible way to add power functions
Date published: 2015-07-03
Rated 4 out of 5 by from Technic on the rise This set is great! I loved it, except for a few minor accuracy details. I love lego, and am fascinated with helicopters and flying them. When I purchased the set, I was amazed at the level of accuracy for the size. Pros: great functionality and compactibility Cons: The rear wheels stick out too much and so do the side beams. Overall, it is very functional and cute; great for the price.
Date published: 2015-05-18
Rated 4 out of 5 by from Tap into creativity This was very interesting to build with my son, who loves the helicopter.
Date published: 2015-01-06
Rated 5 out of 5 by from love this little helicopter. fun and easy to build
Date published: 2015-01-05
Rated 5 out of 5 by from HelireviewIC This helicopter helped me to think of ways to use spare gears and other parts to create minifigure body armory and spaceships.Later I took it apart to create a spaceship.
Date published: 2015-01-04
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