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post #8 of Old 05-23-2009
roline
Cal 9.2 SilverSwan
 
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Join Date: Jul 2000
Location: East Tennessee
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The 9.2's original universal diesel was repalced with an Yanmar 2GM20 (16hp) with a Martec 14D12P folding prop. 6.4 knots at 2900RPM with is close enough to hull speed to be the most efficient spot. More RPM just burns lots more fuel.
The graph is located AT:
http://www.angelfire.com/tn/santana525/cal92/SPEED.JPG
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