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Posts: 3
| I have a 2006 navigator with a 90 hp yamaha 4 stroke. I was getting just under 34 mph gps speed with the 19k prop that was on it. I spoke to a guy I know with the exact same boat and motor just a year older than mine and he gets 38 fully loaded and 40-42 without much in the boat gps speed. I found out he was running a 17k prop so i figured that was the difference seeing same boat, motor, and motor mounted one hole down like mine. I changed props, hole shot was better but only gained 1mph or so at top speed at 5800 rpm on a digital tach. the boat seems to plow water so to speak and sprays off to the sides maybe 2ft or more in front of drivers seat. The boat has sat on a bunk trailer its entire life so I wouldnt believe there to be a hook in the hull? btw those speeds are with the motor trimmed to max before breaking loose. Another weird thing is you can really trim the hell out of the motor before it breaks loose on me. much more than most boats. As for weight in the boat- two batteries up front along with an anchor and life vests and one battery in back. nothing out of the ordinary. any ideas on what could be causing a the hull to be plowing? thanks for your help!! | |
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