Quote:
According to the website calculator mine was 8%. is that good or bad?
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8% slip is
astonishingly good. People pay THOUSANDS of dollars to get a single prop with less than 10% slip at WOT and less than 15% slip at cruise.
Now go run at your favorite cruising speed, and record speed & rpm, and see what your slip is then. A very good prop will have 15-20% slip at cruise. Less than 15% slip at cruise is very rarely heard of, although back when new SS props were $375-$500, I once spent over $700 on a completely custom prop from PowerTech, and got 12% slip at cruise, and 8.8% slip at WOT with Merc 2.0L XR4 V6 on the back of the boat below.
__________________
Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft 
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury