39'' catamaran twin setup RPM ?

[Alfa Spirit]

What is the normal RPM for a 39'' catamaran, 30.000 or 40.000 ?

Thank you

[Fluid]

What is the planned use? What are the desired speeds? Desired run time? Narrow hull?


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[Alfa Spirit]

I don' t want a speed saw monster, I want a fast cat to have fun with friends. I saw videos on Youtube like this one , 2 x 2150 kV on 6S so near 47.000 RPM.
Is this a "standard" or a saw setup ?

https://www.youtube.com/watch?v=X4X7y6biCwA&t=100s

[hughb]

47000 RPM-I would say that’s a definite saw setup. Prop selection would have to be spot on, too big or too great a pitch will draw so many amps you’ll burn out your equipment. Maybe aim for around 30-35000 RPM for a boat that will have some longevity.

[boredom.is.me]

Higher power requirements also means less run time. I'd rather have a slower boat and play longer if I'm with friends.

[tlandauer]

I don' t want a speed saw monster, I want a fast cat to have fun with friends. I saw videos on Youtube like this one , 2 x 2150 kV on 6S so near 47.000 RPM.
Is this a "standard" or a saw setup ?

https://www.youtube.com/watch?v=X4X7y6biCwA&t=100s

jUST RUN 4S and you can have a lot of fun. Why bother to use 6s if you don't need the speed. 5s will give you a big smile, I won't go for 6s....

[Alfa Spirit]

Thank you guys,

I have a set of 1512 1900kV motors, they should be fine with 5S 5000mAh batteries.