jeffies, you can't read. the drag over every boat type is different. Maybe --
if you were a tad more alert -- you would have noticed that a J-30 moves faster
than a Westsail 32.

now, jeffies, go light incense to the gods that made you smart enough to
"invest" in feathering props for your training wheels.

Wrong again jaxie. The Practical Sailor article quoted a different MIT study
which predicted the speed loss that would be created by that much drag.
Remember, this is the department of MIT that created and refined the VPP
(Velocity Prediction Program) used by USSailing for their Polar Speed charts.
They know a little bit about this sort of thing.



"JAXAshby" wrote in message
...
So are you claiming that the MIT study that said that a 3-blade prop
could
slow
a boat up to 0.8 knots was bad science?

MIT didn't say that. the editor (singular) or Pop Mechanixs did. MIT just
reported the data from a prop test.