Heres the thing. You have to drive the boat with ear plugs in, and the tach covered up. Now use a stopwatch to measure how quickly you get up on plane, to say 40mph. The motor winding up to 4K is exactly what you want. A v6 2stroke makes no power at 1500 RPM, they depend on RPM to produce power. You want the prop to slip enough to let the motor get up into the RPM band where it makes significant horsepower. If the prop bites too solidly, the motor will be unable to get you up on plane at all. Hence it is a balancing act. When people want me to help in setup because of a hole shot problem, I ignore the tach and sound and measure time to speed which is what you are trying to minimize. I run a chopper that will wrap up to 5K rpm before it begins to bite. The point of the above is that the RPM of the motor is irrelevant. Most automobiles dont even have tachs. What is important to the end-user is how fast will it accelerate and how fast will it run on top end. You trade one for the other. You can give up some top end and turn hole-shot into a neck-stretching experience. Or you can set up for top end and take 20+ seconds to get up on plane. Most go for something in the middle. To me, 4K sounds fine. It depends on how quickly you get to the 30+ mph range rather than the RPM you reach to accomplish that.2008 Pantera Classic2014 Mercury Pro XS 200
.
