Messages

Ron,

Yes it is the same pitch.  I went to Murphy's Propeller in Norfolk, Va and talked to them about it and ordered the new prop from them.  The only real difference between the props is the width of the blades.  This picture is the two props side by side.

The MP supposedly delivers more thrust at low RPM's (docking is way easier) without killing the WOT speed which went up about .5 knot (flat day slack tide)

Im thinking its the tension on the alternator belt, but Ill check that this weekend.

Outstanding thank you.  Ill scoop up a scope and trace it down. Im going to get a different belt just to be safe.

Will report what I find.

Thanks

Good Afternoon Everyone,

Im looking for thoughts or ideas as to what the problem may be.  When we were on the hard the fall we found our propeller was toast so we replaced it.  Same pitch and size but instead of it being a sailor style blade they are a machine pitch blade. 

The new thing is this.  Idle through about 1/4 throttle no noise between 1/2 and 3/4 throttle there is a whining noise 3/4 to wot no noise at all.  No vibration and honestly lots better performance at all throttle ranges.  Truly much better thrust when docking.

Ive checked all the belts and fluids all within range.  the main drive belt is new I replaced it this winter deflects about 1/2 to 3/4 of an inch is that within range?  Also the belt that I got is notched and not continuous like the old one.

Anyone ever seen this before?

If I had hair id be pulling it out 

Wow, now that is why a love a community.  Thank you all very much.  That was one hell of an answer.  I live on a Mainship 36 with old crusader engine and they are a bit finicky when it comes to oil so I went with the only stupid question is the one not asked.

Honestly, I was way over thinking it.  Stupid ADD and hyper focus.  3 weeks to splash and I cant wait..

Thank you. Which weight do you use?

Good Day Fellow Catalina Folks,

We are the new owners of Sailaway (as she currently named) 1986 Catalina 34 Hull #95.  She has a M-25 installed.  My question is this.  I have dug around in the documentation and have understand that the oil type should be either straight 30 or 10w-30 with a CG-4 rating (which is obsolete)  What is everyone using oil wise.  I'm having trouble finding this rating or am I just missing it.  I just dont want to screw this engine up.

Any help would be amazing.  Thank you everyone.  3 weeks to splash.  I cant wait to get her back out in the water.

John