Making a Fast Lego Boat 1/3 - airboat

You could try turning the left propeller clockwise and the right propeller counterclockwise. This creates an air cushion behind the boat and could increase the efficiency a little.

Imagine you're taking a hike through nature. You get near a river and you see lego boat gliding across. It might be the strangest thing you see that day

You should put a vertical stabiliser on it, underwater one like a rudder. It would be more stable in a yaw axis and you wouldn't have to do so much inputs keeping is straight.

Next Lego boat will have a Lego saw to remove the fallen tree in the river.

Never miss an upload, best lego channel out there

This reminds me of the airboats used in Louisiana and Florida. The difference is it's one fan and the steering is done by putting a rudder on the back of the fan instead of the water. They are flat bottomed, shallow draft boats, as they're used in swampy, boggy areas, like the Florida Everglades.

They really need to do another set with that giant cargo ship hull. The original was awesome, wish I hadn't used it for parts as a kid...

Much simpler than the submarines or the drone, but a lot easier to maneuver and control. Sometimes the old way are better.

3:36 “when in doubt, lubricate.” (Mythbusters motto)

I admire your level of technical knowledge, as always. But what absolutely amazes me is the fact that you were paying attention even during the test drive and did not endanger any water lilies. Hats off, sir.

6:26 Great places for fishing! Are there predatory fish in this river? Have you tried fishing here?

Maybe you should try building a hydrofoil boat next. That would make it travel the fastest. You can build the hydrofoil underwater wings using curved slopes in the shape of an airfoil like you would with an airplanes wing. Since water is much denser than air, you don't need as much lift for the boat's hull to rise out of the water, so you should definitely be able to achieve that with LEGO pieces. https://en.wikipedia.org/wiki/Hydrofoil Or better yet, a wing-in-ground effect craft! No one's successfully done that yet using LEGO pieces before, so if you achieved that, you would be the first person on YouTube to do so! :) https://en.wikipedia.org/wiki/Ground-effect_vehicle

after that submersable, you sure you should be using a game controller?

A Keel and rudder would help tremendously with the boat veering left and right

At the end of the series, you should do one where you just strap a model rocket motor to a lego hull and stand back.

I like the troubleshooting and experimentation stages of these videos. It's nice to watch things iterate and improve.

The lack of cages around the props are a serious safety risk to your lego captain. Also they cause objects to jam them.

I'd consider lowering the motors into the hull and using universal joints to transfer rhe power. Should greatly improve stability.

The biggest hull will always be faster unless you can get the boat on plane. Also to go straight put a rudder in the back, even if it is fixed.

Amazing work!