I’m curious to see what kind of speed everyone gets on their 37/40. It is 
interesting to see that some listers get over 7 knots.  I’m lucky to get 5 
knots at 2500 rpm.  Above that rpm, there is not much of a noticeable change in 
speed, just noise. 

 

Here’s what Patriot has:

 

·        3HM35F Yanmar 30 HP

·        2.14 Gear Ratio

·        16” Max-Prop – 2 bladed

·        Right Rotation – from 
http://www.pyiinc.com/images/pdf/max-prop/PYI_Max-Prop_2_Blade_Instructions.pdf

o   18° 

o   X = E

o   Y (dot) = H

o   Y (dot)(dot) = V

 

Perhaps the 2 bladed prop is really that inefficient or my pitch should be 
changed.  Any advice will be appreciated.

 

 

Regards,

Ron

Ronald V. Ricci

S/V Patriot

C&C 37+

Bristol, RI

 <mailto:[email protected]> [email protected]

 

 

 

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