I recently purchased a 2007 Nitro 189 Fish and Ski with a 2006 Mercury 115hp
4-stroke. The boat and motor is in excellent condition appearing like new in all areas. Boat length is 19'5. It has a Vengeance 13&1/8 x 16 SS prop. During my first and only test run we had 3 adults (485lb) and no gear. The hole shot was great but with WOT we hit 7000rpm with a top speed of 43mph on choppy water. This prop will probably be good for a boat full of people and pulling a skier but my main goal is mid-range crusing with occasional top end. The Nitro stats stated that this boat with a 115hp merc had a top end of 49. I wonder what prop they were using for their tests? From what I'm reading, I'm leaning toward a 3 blade 13.5" x 20 prop. I have no experience here so any help will be appreciated.
Thanks,
LarryD
4-stroke. The boat and motor is in excellent condition appearing like new in all areas. Boat length is 19'5. It has a Vengeance 13&1/8 x 16 SS prop. During my first and only test run we had 3 adults (485lb) and no gear. The hole shot was great but with WOT we hit 7000rpm with a top speed of 43mph on choppy water. This prop will probably be good for a boat full of people and pulling a skier but my main goal is mid-range crusing with occasional top end. The Nitro stats stated that this boat with a 115hp merc had a top end of 49. I wonder what prop they were using for their tests? From what I'm reading, I'm leaning toward a 3 blade 13.5" x 20 prop. I have no experience here so any help will be appreciated.
Thanks,
LarryD