Re: Dumb Question re: Engine Trim
Yes, start with motor tucked under or all the way down. After boat is on plane, put throttle at RPMs your aiming to run at (of course to some boaters there's idle and WOT with nothing in between). Start trimming motor up in little bumps on the trim switch. There are three things I know of to find the "sweet spot". 1) When you reach too much trim up, boat will start to porpoise (bow will go up and down in in a rythym), trim back down just a bump or two to stop porpoising. 2) If boat doesn't porpoise when overtrimmed, the prop will begin to cavitate. You'll know this by the noise the prop is making and the sudden increase in RPMs. Trim back down until it stops. 3) When trim is down, boat will tend to pull right or left (I forget which one). As you trim up, you will pass a point where boat will begin to pull the other direction. Trim back down until boat runs straight. Your boat may experience one or all of these. On my old boat, I could feel #1 and #3. On new boat, I get #2. As you trim up, watch your speed. It can make several MPH difference. Also, if you slow down for a tight turn, you may have to trim down as the angle of the boat can cause prop to rise too high and cavitate (or slip).<br /><br />Not having trim tabs, I have no idea how to factor them into the equation.<br /><br />BL...
