[Putershark]

Originally Posted by deweyneal

What is the optimum pitch prop for a 115 merc on a 190 bay?

The pitch setting that works the best for your engines torque and power band, boat loading, and local water conditions (that's my disclaimer)

I though would set the Pro Pulse to the center setting and test, then if your not getting the recommended top end RPM, then loosed up the 4 bolts and adjust as needed. The Pro Pulse web page though goes into detail those steps and the possible changes your engine "may" encounter from making those changes... Now having said that, these props are not a speed prop. The fact that it is 4 bladed unit will cause some (though small) loss of top end speed. The boat though will jump on a plane quicker (when set correct) and since it is a 4 bladed unit run smoother than most 3 bladed units...

Like I stated before, they make for great "testing" units and since they are not metal are lightweight to store, and don't rust! Thus making them a great back up unit that you can keep aboard your boat if you want to run a SS prop after all of your testing is done Just don't be supprised though it you just wind up just keeping it on the engine after all your testing for they are a pretty nice unit

Let us know how you make out...

Dave