I am still on a mission to find the best running prop for my setup. here is the info i have..<br />Boat: 1996 16.5 fiberglass starcraft tiller (heavy)<br /><br />Motor: 1984 65hp commercial (hydrofoil)<br /><br />Props:---<br /><br />I have been running a stock OMC 13 3/4 x 15p aluminum prop for 2 years and have been having bad plane times and a top speed of 30-31 @ 5800. 5800 is when the aluminum prop started to cavitate.<br /><br />I currently switched to a Stainless prop which weighted twice as much as the aluminum. i was afraid i was going to lose RPM's and overall performance.. but.. i had it out today<br /><br />The stainless prop made world of a difference. Plane times are cut in half and i picked up 2mph.<br />Stainless Prop: 13 3/4 x 15 (SST II?) the boat handles better and i can trim it alot further without cavitation.<br /><br />Problem..... I actually picked up 500 RPMS with the stainless prop. running 6300-6400RPM befor cavitation... My optimum operation range is 5000-6000. <br /><br />I have tried a 13 1/4 x 17 stock OMC aluminum prop. and the boat would not even plane on its own. <br /><br />So if i cant move up in pitch, but my RPM's are too high, what am i suppose to do? I need the hole shot of a 13 pitch prop. but i need the top end of a 17 pitch prop. and the RPMS are there to go to 17. <br /><br />Do they make a 16 pitch prop?<br />Do they make a well ventalated 17 pitch SST? something that would give me a good hole shot.??<br /><br />thanks for any recommendations.
