P42 3 blade fixed prop size

[John Baudendistel]

Hi there fellow poa members. I have a P42 with 16" dia 10 pitch prop. I recently changed to a 16" x 8. The 8 pitch is too small and without enough bite. With the old one I could get about hull speed but ran hotter when pushing harder. Ie would overheat and blow black smoke, a sign of over propped or dirty bottom. Could run all day at 2350 and 185, 5.5 kts. Used to be able to run 6.5 kt at the 2350. Before I change back to 10 pitch I wanted to get some feedback from Perkins and fixed prop boats. Does not matter p40 or p 42 with the Perkins and a fixed prop. Thanks for your feedback.

Thanks
John Baudendistel
Dream Keeper
P42

[Dennis Downing]

Fellow passport owners

I am selling my Passport 40 CHEAP.  I am getting to old to care for her.  She needs work but she sails just fine.  I have never had problems with the motor (VW diesel), the floor, the hull.

  I will consider all offers.  I WAS asking $35k.  

  She is hull number "8".  She now lies in moorage in Puerto Vallarta, Mexico.

Please respond if interested 

Dennis...."PANACEA"

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[John Baudendistel]

Allen,

Noted and thanks.  A couple of others.  I changed the raw water strainer and put in a huge one.  Old one was frozen and plugged.  Now running 2400, 5.5 and 160 degrees, too cold.  Temp dropped 30 degrees from prior to haul out.  

Thanks 

John Baudendistel

Jo...@ets247.com

650.678.1459

On Sep 8, 2015, at 1:17 PM, Allen Cooper <a...@stanford.edu> wrote:

John

This may not help but

I have a perky with an autoprop so not easy to compare with maxiprop etc but I run at 1800 RPM for days on end with out problem (T=180).speed 5.5k (depends on sea state, winds etc of course) at 2000 temp up to 190 and speed at 6k.

Things to think aobut: how accurate is your tachy? can check with a strobe. How clean is your heat exchanger? Also 2350 seems a bit high for a Perky

allen

On Tue, Sep 8, 2015 at 12:44 PM, John Baudendistel <jo...@ets247.com> wrote:

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