I built a LEGO 4x4 car that can swim!
Chapters
In August 2025, I accidentally dropped one of my LEGO Technic cars in the sea. The poor thing floated for over 30 minutes until I was able to swim and get it back. You can check out the epic conquest of a semi-sunken ship that led to that accident here :
https://youtu.be/gGjyRtAyFA0
We all know that accidents like that can sometimes offer great data, and that was no exception! It immediately dawned on me that the thing that kept that little car afloat was its tires. Once I brought it back to the shore, I realised that only a few drops of water had found their way into each tire.
So, if I build a car that is light enough, put as many tires on it as possible, and raise the motors and electronics above the waterline, it could probably swim!
Amphibious 4x4 Rover specs :
Engine : 2x BuWizz motors
Steering : 1x RC servo motor
Battery : 3-cell LiPo
Remote Controller : FlySky GT2G with FS-iA6B receiver
Electronic Speed Control (ESC) : Hobbywing Quicrun 1060
-- Video Chapters --
Footage was shot on DJI Action 2 (Vehicle onboard and underwater shots), DJI Mini 4K (aerial shots), and Google Pixel 6a smartphone (build process and various tripod shots). To stabilize my smartphone, I use a Zhiyun Smooth Q3 gimbal.
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