On Tue, 07 Aug 2007 14:33:28 +0100, Adrian Stott <[EMAIL PROTECTED]> wrote:
>"sean neill" ><[EMAIL PROTECTED]> wrote: > >>Of course the paddlewheel effect is much less potent in a diesel boat >>than in a steamer. > >Why? Because in general for a given size , steam engines generate more torque, at lower revs - so the prop is courser and larger - and that causes more asymmetric blade effect. http://en.wikipedia.org/wiki/Propeller_walk -- Malcolm
