Did anybody test the rpm of the 65161 motor under water and what prop you are using?

efoils – Electric Hydrofoil Surfboards
1

I’m going to build my own efoil. Just wondering what rpm the 65161 motor will be when under water and what prop to use. Thanks everyone.

2

There are a couple of threads discussing it.
If you want a quick estimation, multiply the free spining rpm (kV×volts) by 0.7. That should be close enough.