[Public-List] Optimal prop RPM for hull speed.

[Gordon Laco]

Hello David - 

If you can get your hands on a copy of ’Skene’s Elements of Yacht Design’, you’ll find a chapter on propellor performance, which includes a very useful chart showing rpm/speed/pitch that is simple and practical.

Gordon Laco
#426 Surprise




> On Apr 22, 2020, at 2:40 PM, David A. Bardsley via Public-List <public-list at lists.alberg30.org> wrote:
> 
>   I'm closing in on Ginseng's electric repowering project design and am
>   looking for input on prop RPM needed to reach hull speed.  This data
>   will assist  me in specifying the optimal motor speed reduction ratio.
>   My prop is a two bladed type marked "13 8" that I imagine is fairly
>   common on our craft from Whitby.
>   Any data or advice you are willing to share would be greatly valued.
>   Dave
>   Ginseng #574
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