Lego Propellers in Water (worst to best)

Just straight into action. No intro, no sponsors, no bs. Love these kinds of channels

the fact that you are testing propellers makes me wonder if you are planning on revisiting your Lego submarine.

It would have been cool to only have the audio from the under water camera, that way you could hear the noise difference between the small and large propellers. In both watecraft and aircraft, small propellers have the trade-off of making more thrust per unit-area, but being significantly louder. That is one of the main reasons that fighter jets are so much louder than giant passenger aircraft despite having a fraction of the engine power, and why nuclear submarines utilize HUGE propellers that spin very slowly.

top tier data analysis, im fully satisfied

Gramms per Watt would have been useful, but with the gears you also arrived the sweet spot for that motor. Although "static thrust" numbers could be very different to those when boat and prop are both moving fast through water

Bro's the top lego engineer 🗿

I love these kinds of videos. Good old empirical science. Test a bunch of stuff, note the result, analyse, learn. Great resource when making boats, planes and helicopters.

While I enjoy your build-up-to-the-best-bit style, I want to commend you for the intellectual honesty in getting directly to the showing off all the variations in this large-dataset case which otherwise might have had a very long build-up; not a second wasted, and once you'd shown the most clickbaity part of the video, you investigated each case further. Very respectful of your audience's time, thank you. 🙂

I loved the freeze frame on each propeller followed by their dimensions. Made me feel like I was watching a heist flick where all the characters with special abilities are being introduced.

My man trying to teach us mechanical engineering and thinking we wouldn't notice

Anybody else find this really weirdly relaxing? Just a quiet video with no dialogue and some experimenting

Helicopter helicopter

Had to stop and re-watch at 0:20 . I legit had thought it was a comically edited failure because of how smooth that piece just gently sank down. Love watching allt he test and trials you come up with. Keep up the awesome work!

Gotta go tell my gf that 15cm is indeed considered huge

He is studying for the next Submarine!

its crazy how much more power some of the much smaller ones put out in comparison to the larger ones

Really educational!

As propellers are tested at zero forward speed it is more useful to be compared in term of "figure of merit"(thrust/shaft power)

Next we need to know which design is the most efficient: thrust vs. power draw BTW: good work!

your videos are fantastic, from the editing, building puzzles solved to the top tier data analysis all in an easy to understand presentation WITHOUT saying a word!!!