I would like to present you the motorized remote control mods of the LEGO® Technic 42077 Rally Car. There are two upgrades available, 2 wheel drive and 4 wheel drive with additional extras.
I’d like to share with you the RC mod of the 42077 Buggy B model with building instructions.
I finished the building instructions for my buggy motor mod of agrof’s class 1 unlimited buggy. Please note that these are not complete instructions, the aim was to show you the main modifications I made on the car. There’s no part list either this time. I tried to highlight which part/sequence needs to be changed compared to the original build. I was using 2 BuWizz units to power the buggy motors, the units were replacing the seats in the cabin.
Link to the original build & instructions on rebrickable:
The 50th Score Baja 1000 off-road race starts today, the best way to pay a Lego tribute to this event is to take an RC Technic car outside and see how it performs 🙂
Last week I showed you the BuWizz & buggy motor equipped version of agrof’s Class 1 unlimited buggy. Although the performance was impressive compared to the original with Power Functions, the car was a bit too big and heavy for my taste. I decided to shrink it down proportionally, and this mini version was born. It has smaller wheels, the body is 2 studs narrower, and the overall length is proportionally shorter as well.
The track width did not change as I did not have the proper replacement parts for the steering, I’ll work on this later. The car feels quicker, although due to the smaller wheels some obstacles can be problematic. The color scheme is not the final one, I had to use what I found in my boxes 🙂 I’ll work more on this car later as I really like the sturdiness and the performance. And now, pictures!
The 50th Baja 1000 off-road race will take place next week so I wanted to create a Lego tribute video to this fantastic event. The best vehicle to choose was agrof’s class 1 unlimited buggy which is a great build, highly recommended to everyone! As usual I made some modifications, the car is upgraded with 2 buggy motors and 2 BuWizz units. It also has 2 SBricks added so I can swap the BuWizz units with Lego battery boxes. My version lacks the fine details of the original vehicle as I was afraid to loose parts at high speed 🙂
Many thanks to agrof for the opportunity to see his car and for his help making this video.
You can find the original build here with instructions:
You can find below some images of the car and the description of the changes I made.
Obviously the biggest change was to swap the 2 L motors with buggy motors. To integrate the buggy motors I had to rework the rear suspension as well. The IR receivers were replaced with SBricks.
I received many questions and requests to provide details about this car, so I created this step-by-step assembly video and uploaded the part list to rebrickable.
Let me know if you build the car or something based on this version, I’m really curious how fast can you go with it 🙂
A brand new type of video from RacingBrick – stop motion brickfilm! 🙂 It’s a short teaser for my BuWizz powered Lego Technic RC speed record breaker. Join my little helpers to see the final tests for this beast and see the wheels spinning over 3000 RPM!
Since I received many requests again to provide instructions for the wheeled speed recorder Lego Technic 42069 Extreme Adventure RC mod, I try to help you and took a series of pictures while disassembling the model.
Please note that this video is far from being a complete guide – it shows how to build the 2 axles with the 4 buggy motors.
This is my third and last Lego 42069 Extreme Adventure remote control mod. After the Superleggera mod I did not plan to create another one but I was convinced by some comments on my YouTube channel (thanks for the tip!). Although I really liked 42069 on tracks, I realized that the top speed was limited by the construction so the 4 buggy motors could not show their full potential. I removed the tracks and added the wheels from the 9398 Crawler set.
The pickup-style body was kept from the previous mod to ensure the car is as light as possible. The axles were rebuilt completely to fit the buggy motors and the wheels.
I’d like to share a small but agile creation – the remote control mod of the 42033 + 42034 Extreme Off-Roader combined set. Additional parts (mostly for steering) were used only from the set 42035 Mining truck.
The sets and Power Functions components are:
- 42033 Record Breaker – http://ebay.to/2xkA3DO — http://amzn.to/2zmrWo
- 42034 Quad bike – http://ebay.to/2fiyVqo — http://amzn.to/2zki9Qh
- 42035 Mining Truck – http://ebay.to/2xxHpo7 — http://amzn.to/2yb01Hv
- PF L motor (drive) – http://ebay.to/2wF3Kgc — http://amzn.to/2zlJtxD
- PF Servo motor (steering) – http://ebay.to/2x89pP0 — http://amzn.to/2ApqzGf
- PF Lights – http://ebay.to/2x8jueR — http://amzn.to/2zmfHZK
There are multiple options for the remote control:
- PF Rechargeable Battery box (8878) – http://ebay.to/2xkDw53 — http://amzn.to/2zBunqJ
or AAA Battery box (88000) – http://ebay.to/2xjTbBV — http://amzn.to/2zmZAuS
- PF IR reciever (8884) – http://ebay.to/2y5KkRV — http://amzn.to/2y7WDgd
or Sbrick – http://ebay.to/2eDtXUu — http://amzn.to/2AnwHyN
- Buwizz – http://buwizz.com
For the video I used the 8878+SBrick combination as the control was easier with an USB gamepad through the SBrickcontroller app. It turned out to be a very fun little car, pretty quick considering the size. Enjoy the video!
Disclaimer – if you make a purchase of the parts/sets listed above on Ebay or Amazon then you’ll also contribute to my future Lego projects.