well you need enough hp to get the skier out of the water so between 25 and up is good. i ski behind a boat with 270 and its plenty
50 hp
One hp is approximately 756 watts.
50 HP
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18-3085 sierra
To answer this question the motor voltage and amperage is needed.
To answer this question a voltage is needed. 1 HP = 746 Watts. Amps = Watts/Volts.
50GPM
To answer this question the voltage of the motor is needed.
The generator should be about ¾ hp.
You would need the mass of the object to calculate this.
100cc=hp