Max Prop Settings

[Rick Grantham]

I'm in the process of purchasing a Passage 42 equipped with an 18" 3 blade Max Prop. The prop and shaft are currently out of the boat and I would like to ensure that the current settings are OK when it goes back on. The settings are X=S and Y=C. Don't have the manual with me to equate that to pitch.Rick

 

[Patrick Ewing]

Max Prop pitch

From http://www.pyiinc.com/MP_3B_INST.htmthese settings are for 24 degrees which correlates to 15 inches (right hand)on your 18 inch prop

 

[Kevin L. Woody]

MP pitch

Dear Rick Grantham: Thank you for your letter. The SC setting relates to a 24-degree blade angle. I show in our records a multitude of engines and reduction gears available. Because of the multitude of combinations we will need to know the current installation of engine and reduction gear. If you need an instruction booklet the our site is www.pyiinc.com were you can download a copy of the instructions.Hope this helps, Sincerely, Kevin L. Woody

 

[Dave Fraser]

18 degrees works well

I've owned a Passage 42 for two years with a 17" 3 blade variable pitch Max Prop. After quite a bit of experimentation, in all sea states, I found 18 degrees to be a good blend of speed and torque. It had plenty of torque to punch thru 10' headsea's off Nantucket, and does 8.7 knots in flat seas at 2900 RPM. When set right, a prop acts like a governor on your engine. Too much pitch and the engine will blow black smoke and cannot reach 3600 max rpm's. Too little pitch and the boat has no torque to push thru headseas, and allows the engine to push past it 3600 rpm design limit.Having a variable pitch prop was sure a help. After 2 years, we had flawless performance on this prop.