Originally Posted by
HTVboats
Kv's are similar to gearing and lower Kv's allow a larger diameter and pitch propeller. Motor size and amps potential are directly proportional. More motor, more amps, bigger and more cost to an ESC. Certain hulls have more water drag and cannot tolerate higher KV's, a rigger vs a mono or cat have different hydraulic drag and prop blade area needed to push the hull efficiently.
As was stated 3S times 2 in series is an easy 6S setup. Going to 6S and a relatively mid size motor, (36X74, 40X74) will keep amps under 150. That allows ESC's at reasonable and economical cost. Plus decent performance. What is your budget and what are your performance expectations?
Mic