finding the right prop

[McGillicuddy]

Originally Posted by GodsReel

what is my slip with these numbers 17 pitch, yamaha four stroke 225 LU gear?,44mph, 6000 rpms? Three blade prop.

-2% in other words the prop slip computation calls bs on your numbers.

In theory the fastest your data would allow is 43 mph. I don't recall what Yammie youre running but you might double check your gear ratio. Seems they were 2:1 for a long time.

There are a host of prop slip calculators on line just plug in the numbers and brag

Here you go The actual calculations are above the calculator if you want to practice old school math:
http://go-fast.com/Prop_Slip_Calculator.htm