Well...finally took the boat out on the water. The motor got rebuilt because of a low compression cylinder. <br /><br />First off let me say that I love this motor. Pulls skiers just fine for me. We had them put on a 13x19 prop and with two people in the boat at 5200rpm we were doing right around speedo said 50mph. I prop has some pretty nice cups at the end of the blades, so I believe the speed is pretty close to right. I do have more throttle to give it, so I think that I may need to go with either a larger diameter, or a higher pitch prop or both. <br /><br />So first question: <br />How big of a diameter prop would you recommend for this motor. I don't want to lose to much bottom end, since I am towing skiers, etc. Wondering if maybe a 13.5 x 21 would be good to try...opinons??<br /><br /><br />Next we notice that during break-in and after that the motor has a small ratlle during deceleration, not the whole time, but rather right after you left off the gas a little. We were thinking that it may be a prop clutch of some sort, example of what we are thinking is with the boat moving forward at say 45 and then you left of the throttle a little and the rattle is there until the boat reaches the speed that the motor is turning at...thoughts?? or could this be something else? <br /><br />We definately see the flat spot between 2000 & 2500 rpm, but only when you gradually come up on it, if you just hammer the throttle you would think that it isn't a (2+2) but rather a motor that runs on 4 all the time.<br /><br />Other than that, all the hype with this motor not being good to ski with, I don't believe...I gave full throttle to the skier and then backed off to about 3800rpm about 28mph (no trim) motor runs awesome and plenty of power to get a skier up. <br /><br />This boat is an relatively light weight 73 gemcraft southwind, so it gets up and goes in a hurry.
