[Public-list] Prop question

[sousa, stephen (ENG)]

Joe,

The prop has the wrong pitch, the 12 inch diameter is fine for the Alberg
aperture. The Yanmar requires a 12 or 13 pitch. I have the 2GM20 (13 hp)
with a 13 inch pitch Sail Prop.   We can cruise under normal conditions at
5.5 to 6 knots. I generally run the Yanmar at 2200 rpm. I would give the
folks a call with the link provided,
http://www.marinedieseldirect.com/yanmar/shopping/ they are great to deal
with and very knowledgeable.   

Stephen

-----Original Message-----
From: public-list-bounces at alberg30.org
[mailto:public-list-bounces at alberg30.org] On Behalf Of FITZONELOVE at aol.com
Sent: Wednesday, July 07, 2004 8:16 PM
To: public-list at alberg30.org
Subject: [Public-list] Prop question


I bought a new 3 bladed prop this spring-Michigan 12"R10," and find that
with 
the Yanmar 3GM30, I can barely do 3-4 knots into a stiff breeze at 3000 
RPM's.  This is the prop that was recommended by the local propeller
seller(LOL), 
but I think it is either undersized, or needs a pitch adjustment.  The boat
had 
a large 2 bladed prop prior to this, but the hub cracked after striking 
something in the water.  Any advice/comments would be very much appreciated.
Thanks, Joe #286 _______________________________________________
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