The most economical cruise is going to be at the lowest rpms and maintaining
plane. A 4 blade will allow for a lower rpm than the 3 blade at minimal
plane speed. It will also give you better throttle response and quicker
planing.

--
Tony
My boats and autos - http://t.thomas.home.mchsi.com



"F330 GT" wrote in message
...
For this application, good performance SS 4 blade props would be the best
choice. They will give you better acceleration, planing speed, and low
speed cruising ability. You will loose a few mph on top end but chances
are
your not trying for top end speed anyway. You will definetly like the
way
the boat behaves. Prop for right at max rpms on the engines at wide
open.

Don't waist your money on aluminum 4 blade or composite 4 blade as you
have
too much torque for these props to hold their shape over time.

--
Tony
my boats and autos - http://t.thomas.home.mchsi.com


"Diver1055" wrote in message
...
Hi

I have just purchased a 2950 Proline with twin 225 OceanRunners. I am
trying
to get the best economical cruise speed I can. I was wonderig what
would
be
the advantages to a 4 blade prop as apposed to a three blade prop...

Thanks
Rick








Tony,

I don't disagree with the response as far as the qualities of 4 blades but
he
was asking for the most economical cruise. I can't imagine a 4 blade being
more
economical than a 3. Common sense tells me there would be less drag with
one
less blade.

Barry