Brian, When I adjust Calypso’s 3 Blade MAX prop 1 setting it seems to make a 10% change in pitch/engine speed.
Some yards will make a deal during slow times to allow several hauls and launches to test out the different pitch changes. The service guys at PYI may be able to give you the most popular pitch setting for your engine, reduction gear, and hull. I ran Calypso’s Perkins 4-108 slightly over pitched for a few years. I changed it to slightly under pitched (the engine easily reaches max rpm) for a trip around Vancouver Island to be sure I could power into big seas and winds if needed. I did not notice an increase in fuel consumption but I did notice a slightly reduced cruising speed at the smoothest RPM. I am able to hit hull speed at higher RPMs. Martin DeYoung Calypso 1971 C&C 43 Seattle [Description: Description: cid:D1BF9853-22F7-47FB-86F2-4115CE0BAF2F] From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Brian Fry via CnC-List Sent: Wednesday, March 23, 2016 4:45 PM To: cnc-list@cnc-list.com Cc: Brian Fry Subject: Stus-List Max prop angle I have a 3 blade Max Prop, 17". The surveyor said to adjust propeller pitch to allow the engine to reach top speed in gear. The current settings are for 24 degrees. I think I am supposed to reduce the angle. I do not know how far off the speed is, so I am thinking of starting at 22. Anyone else with a 37/40 know their pitch or angle? Brian Fry La Neige 37/40 XL Havre de Grace MD
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