[Public-List] Public-List Digest, Vol 3998, Issue 4 Two blades prop

Greg Hounsell greg.hounsell at gmail.com
Sun Apr 26 15:49:00 PDT 2020


I don't understand how a prop would cause rotation when in neutral. Is
there a strong tide or current?

Greg
#592

On Sun, Apr 26, 2020, 6:06 PM Daniel Swords via Public-List <
public-list at lists.alberg30.org> wrote:

>     The PO of my boat had replaced the original two blade prop with a
> three blade prop, but fortunately had saved the original. I disliked the
> three blade so much that I paid to have the boat hauled just to replace it
> with the original two blade.
>
>
>
>     If left in neutral the three blade spun continuously and noisily and
> created enough turbulence to feel through the tiller. If left in gear
> (something Yanmar recommends against) the transmission would lock-up with
> even the slightest forward motion such that the safety interlock would
> prevent starting the engine.     As far as I can tell the two blade prop
> does not spin in neutral and typically parks vertically behind the keel.
> Also, I did not notice any significant advantages with the three blade prop
> so I gave mine away and have never considered going back.     Currently
> sailing on Lake Pontchartrain, winds 15 gusting to 19 knots, double reefed
> main and 110% jib. Daniel SwordsSolitude, Hull #525Mandeville, Louisiana
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