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janssnet posted a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingI'm trying to build a waterproof LEGO (power-) boat using a 54779 Hull. Have already attached the hull to the deck using silicone but haven't found a way to build a hatch on top of the deck in order to: 1. Protect the electronics inside and 2. be able to easily remove the deck to switch the battery inside the boat on and off. Just covering the deck with base-plates is (unfortunately) not enough. Water is still finding a way inside. Putting plastic foil under the base-plates is a mess. The remaining option (so far) is to make a silicone mold which then works as a rubber strip between the deck and the baseplates to stop the water from going under the baseplates. Definitely not a method with guaranteed success. Anybody any tips? https://drive.google.com/file/d/168JsCBVT6ALASfuV-NYymiWoyGaMogaN/view?usp=sharing
janssnet posted a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingNot 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.
janssnet posted a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingHi folks, Most LEGO boats have out-board motors. Not very elegant, not very fast. I felt a strong urge to find out if in-board was possible. And, if the LEGO hulls could handle some speed. Although it did require a 3D-printed part (a so called stuffing tube), it worked out well. Built in some 2.4GHz RC components to make sure the boat could be controlled from a distance. And included a modest brushed elektromotor. Please have a look at the result hereunder. Leave a comment if you wish to see more details. Happy to share. Currently working on a optimized version: The prop behind the boat, not under the boat. Less resistance, more speed, more control.