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[email protected] May 31st 20 11:03 PM

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

[email protected] June 1st 20 12:59 AM

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

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


~45 ?



Bill[_12_] June 1st 20 01:45 AM

approx outboard speeds question
 
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? ;)


[email protected] June 1st 20 04:50 AM

approx outboard speeds question
 
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.




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