The motor is programmed with a speed limiter. That´s the reason why I get 20% thrust without water and 50% thrust in the water bucket. And it should be 100 % in the first try in the sea.
I will try it and tell the result. (It will take some time, because I have to fix the ESC and pot it.)
It’s actually not lack of power or rpm limits that makes this behaviour.
Without load only a very small battery current is needed for full speed in current control mode, 1-3A is enough. Speed achieved in current control mode is limited either by the defined limits in the esc or by the voltage of your system and kV constant of the motor.
Under load it will naturally reach higher current and higher power (but not higher duty cycle)
Yes, exactly, the spinning speed is limited. Therefore I achieve 100% of the performance under real conditions and only 20% of the performance on land.
In any case, that’s what the remote control shows me.
You don’t get 20% of the (performance) on land, and this is my point, the noload power consumption is more like 5% of the max loaded power (150W vs 3000W)
Therefore the 20% is not correct, this is some other percentage unrelated to power or performance.