Lego Technic 42077 Buggy B-model RC mod with building instructions

I’d like to share with you the RC mod of the 42077 Buggy B model with building instructions.

Where you see “Original steps x-y” please follow the original instructions. Some custom steps are generic, but some of them are alternatives. Please choose one of them to build, e.g. “AAA battery box / rechargeable battery box” or “AA battery box”.

The RC mod uses mostly parts from the original 42077 set. There are a few extra parts needed (gears) for each motor variation, the list is available on each instruction page and the full part list is available on

Instructions for the Power Functions 2 L motor mod
– driven by 2 Power Functions L motors
– steering by Power Functions Servo motor
– Battery options – AAA/rechargeable/AA battery box
– Remote options – IR remote/SBrick

Instructions for the buggy motor mod
– driven by 1 buggy motor
– steering by Power Functions Servo motor
– power & control by 1 BuWizz unit

[amazon_link asins=’B075QZMNY8,B075SD9MJG,B075R17LPZ,B075SDMLZ9,B075QZN8K8|B075GS1NNB,B075GR44MV,B075GYNXD2,B01CCT2ZHC,B075GYNXD1|B075GS1NNB,B075GR44MV,B075GYNXD1,B075GWYHLK|B075GS1NNB,B075GR44MV,B075GYNXD2,B06VVPJ3B7,B06VVH3QZ5,B00K0CYPRM,B01J41LWFW|B075GS1NNB,B075GR44MV,B075GYNXD2,B06VVPJ3B7|B075GS1NNB,B075GR44MV,B075GYNXD1,B06VVPJ3B7,B075GWYHLK,B075GYNXD2′ template=’ProductCarousel’ store=’racingbrick-20|racingbrickuk-21|racingbrick00-21|racingbric0b0-21|racingbric000-21|racingbrick02-21′ marketplace=’US|UK|IT|FR|ES|DE’ link_id=’390501f0-06a5-11e8-a062-d72177d9ae3e’]


  1. Hi~
    I need your awsome instruction.
    thank you.
    have nice year~~

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.