FOUR STROKE 150 HP DATA

[sailboat]

-Changed props (to a 14 1/4 X 15) today on the 150 Four Stroke Yamaha and it got me to 6000 RPMs, but reduced speed 2.5 MPH across the board. So back to the 14 1/4 Diameter by 17 Pitch. (previously reported by me as a 14 1/2).

-Couldn't wait for the final break in numbers so asked the guys to hook up today and give me the numbers.

- Final results are as follows:
4000 RPM 30 MPH 6.8 Gallons per Hour (GPH)
4500 RPM 35 MPH 8.4 GPH
5600 RPM 45 MPH 15.1 GPH

-Only 3+ hours on engine now. My experience tells me she will loosen up a bit by 100 hrs and gain a little.

-I do not believe that it matters what engine you really get in the four stroke arena. All are great and quiet! No more ear plugs during the commute to work.

-Certainly appreciate all your comments and forgiveness for errors.