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Old Jun 13, 2004, 09:01 PM
Steve Blackmore
Steve Blackmore
n/a Posts
Re: propulsion for a large scale rc model

On Sun, 13 Jun 2004 23:03:28 +0200, Matthias Broersma wrote:

> i was wondering what i could use as propulsion for a 9'-10' catamaran.


> what kind of rpm and torque do i need? can i use those gardentool engines?
> weight would not be the problem...or do they have a low rpm?

Choice is small prop,fast rpm. Large prop, slow rpm. Torque means
nothing, especially when you ask a question like "What sized engine will
power a boat"

> what about waterjet? if i understood well i need an engine that runs a
> pump... what specs do i need in this case?
> any links?


Post your displacement, LWL, expected speed and I'll find my old marine
engineering books and tell you how much power you need.

Steve Blackmore