Not for LEGO purists, contains modified LEGO parts.
It has been a wonderful struggle, but it paid off: a super fast, relatively stable LEGO RC Boat, driven by a brushless elektromotor and two, counterclockwise turning propellors!
No torque-roll anymore, almost no porposing (thanks to the trim tabs), direct steering and great fun!
To get the balance right and to get the boat planning at higher speed was a challenge. But it works! The wet area can be reduced to a minimum, at high speed the boat is almost complete on top of the water (downside: hardly any control left :(( ).
Based on a 54799 LEGO Hull with a few additions:
- 3D printed stuffing tube to cater for an in-board, brushless motor (10 mm tube stuffed with LEGO parts to make it waterproof)
- A gearbox to convert the motor output into two counterclockwise turning axles
- A 2x2 3D printed LEGO brick to make the steering arm waterproof
- And al the 2.4GHz RC parts: ESC, servo, battery pack, receiver
Please have a look at the video and let me know your comments.