On Mon, 1 Jun 2020 00:45:19 -0000 (UTC), Bill
wrote:

wrote:
On Sun, 31 May 2020 15:03:51 -0700 (PDT), wrote:

16’ Wahoo with a 90hp Suzuki 4 stroke and 23” SS Prop?

~45 ?




23” per revolution, 4000 rpm, doesn’t that work out to a little over a 1000
mph?

Actually a little over 50 MPH at 6000 RPM
(minus the slip)
DF90A WOT RPM should be 5300-6300 with a 2.59 gear reduction.

When you do the math you end up around 50.
10% slip gets you 45.