Doug Kanter wrote:

Just sort of lurking in this conversation, but if a stainless prop and an
aluminum one were exactly the same dimensionally, why would one perform
differently than the other? Friction differences due to surface
characteristics?

Stainless steel is STIFFER than the aluminum prop and will outperform
it. Also, aluminum props ding up much easier than steel props. Stainless
is the way to go.

--
Skipper

Skipper wrote:
: Doug Kanter wrote:

: Just sort of lurking in this conversation, but if a stainless prop and an
: aluminum one were exactly the same dimensionally, why would one perform
: differently than the other? Friction differences due to surface
: characteristics?

: Stainless steel is STIFFER than the aluminum prop and will outperform
: it. Also, aluminum props ding up much easier than steel props. Stainless
: is the way to go.

(I knew this would get started)

In the comparison tests I've read (Trailerboats magazine) the speed advantage
of Stainless was about 2 MPH. The cost premium was over 3X the cost of
aluminum. So... the choice is yours but from my perspective (and I've had
a boat for geez... over 40 years) I wasn't willing to pay the price
premium for Stanless given the minute performance advantage.

(I'll bow out of the now)

barry

wrote:

(I knew this would get started)

In the comparison tests I've read (Trailerboats magazine) the speed
advantage of Stainless was about 2 MPH. The cost premium was over 3X
the cost of aluminum. So... the choice is yours but from my
perspective (and I've had a boat for geez... over 40 years) I wasn't
willing to pay the price premium for Stanless given the minute
performance advantage.

(I'll bow out of the now)

No need to bow out. I'll not be arguing with the grizzled putz. Most
know he issues his childish gibberish counterpose just to troll. He does
not respect truth or the original requesters question.

BTW, when I was racing C stock hydros back 50 years ago you didn't see
many aluminum props on racing boats of ANY class. The physics of the
damn twirly things haven't changed all that much since. You go with
stainless for PERFORMANCE advantages.

--
Skipper