What Prop?

[madangler]

I just had a new 150 Etec put on my 1973 20 CC. What prop would anyone reccomend?THis is the first new motor I have ever purchased so I am really looking for prop advice. I probably want to get the most efficent prop possible as long as it wont sacrifice a ton of top end. I use the boat in the ocean exclusively. If there are certain props that preform better in big seas than others that would be interesting because most days I'm in pretty good size seas for the boat. Don't want to spend a fortune on a prop but having a good one would be nice.

[Fr. Frank]

Rebel TBX 17" or 18" pitch for a BRp prop for all-around use. If you're gonna be offshore 80% of the time or more, then the Cyclone in a 17" pitch.

You still want to be able to turn Max of Max at Max. (Maximum end of Maximum RPM range at Maximum loading)
In other words, you want to be able to turn 5850 rpms (Max RPM range is 4850 to 5850 rpms) with the boat loaded with full fuel, AND all your gear, AND the maximum number of people you'll ever have on board.

Yes, you'll lose a couple of miles of WOT speed. But you won't blow your motor from overloading, you're not likely to spin or shred a hub, you'll have a lot of available torque in an emergency if you ever need it, and your cruise economy will be about the same, because your motor is not laboring as much at a given speed.

Don't over-pitch yourself into trouble. Way too many people shorten the life of their motor by having too much pitch in their propeller. The 150 is plenty of power, so dropping your top speed from 48 to 44 mph isn't going to make much of a difference. You'll rarely be able to sustain over 30 mph offshore except in the summer. 20-25 mph offshore cruise is much more likely to be all your hull fittings and body can stand.

[madangler]

Thanks for the advice