This boat propeller looks pretty interesting...

[Lord of the Dunes]

It looks like this propeller design came out about 2 yrs ago, but this is the first I've heard of it and it's really interesting how much more speed and efficiency they're getting out of it. I saw 2 different tests on different boats, there might be more tests that I didn't see. Considering how long current propeller designs have been around, the difference in performance is pretty amazing!

https://www.youtube.com/watch?v=PYGChIUdTX4

 

[ROBERT L]

That was a interesting watch. 

 

[wopachop]

Trippy stuff. Wonder if that loop design has more surface area but still easy to get spinning. Because you could make a larger conventional prop. But then the fins are further away from the center and takes more force to spin. Its like they folded a big prop into a little stubby.

 

[r3meyer]

I was ready to order it.... until I saw the $5000 price tag.  lol

 

[Kat-A-Tonic]

Imagine hitting something with that.  $5K down the shitter.  Seems way overpriced for what it is.  A 6 speed trans for a Nissan 350 Z is only $2K and I think it has way more machining and labor to build.