Re: Can I lower pitch on Raker
Ya got it ,,,1989 Spectrum Blue Fin aluminum 19 ft boat. Boat weighed 1680# last year,but that was with a 90 hp Johnny,,it now has a 120 which I assume is about 60# more.It also has all new wood on deck up front,,,old wood was pretty dry rotted.Wood is 3/4 plywood,so lets say that I added 150# there,so lets say the boat is around 2000#..One drawback is gas tank is built into bow of boat, 19 gallons. It is a fairly flat bottom,,not totally flat,,has some curveature.<br /> Boat has a stringer,rib, running front to back,but ends about 4 feet from the back,hull is riveted. I currently have a 14 by 17 OMC aluminum prop(3 blade) ) running 5500 rpms. Cav plate is mounted 1 1/2 inches above bottom of hull,which is as high as I can go on motor without drilling more holes in boat.I actually noticed very little difference from when cav plate was even with bottom of boat.I can trim up to the next to top line on trim gague,from then r's increase but speed drops. I bought the 20 pitch Raker on e-bay,but it has not arrived yet.I stood on the bank as my nephew went by,and I was amazed at how much of the boat was still in the water,,like 15-16 feet.I have tried the Ballistic 14 by 19 pitch ,5500 r's(marginal speed gain) Stiletto 14 by 19 5200 r's(also marginal) ..And it is not setting directly on transom,,about 3 inches up.And no,deffinetly a stepped hull.Am I a prime candidate for a jackplate.Thanks for your help.P.S. I seem to be getting blowout on slight to moderate turns,,so it almost seems like the motor might be a tad bit high.But I guess if the bow isnt lifting,that would limit my trim range.
