We have found a big diffrence between propeller manufacturers when it comes to increased pitch vs efficiency. Most of the time the bigger the pitch, the less the efficiency. So, if you have enough torque, you might consider a taller gear ratio and a more efficient (smaller) pitch prop. However, what I have been noticing in a lot of magazine articles recently is that taller gear ratios along with big pitch props are being used to achieve higher top speeds. Personally, I don't like that setup because I think it is dangerous. The boat becomes very sluggish and non responsive resulting in very poor handling. It also takes a long time to achieve top speed which in turn leaves the occupants vulnerable to higher risk for a longer period of time.

while were on the subject, does anyone have any 5 or 6 blade Merc. #6 shaft props for sale. I will probably need 31-36 pitch.

Now THAT is an answer........

Thanks David.

T2x.......

P.S...... How long do you think powder coating will stay on a prop blade????........ At 100 I'd guess 2-3 minutes.

Thanks Dave, I have been wondering about that for awhile.

Roby

go have a look at pops 101 here...they are behind the times...but still some good basic info:

http://www.mercurymarine.com/chapter...ler_technology

all things the same...u take a 28 B1 4 off and slide a 29 H6 on your not going to turn it...u r right setup is everything...but man,,,we are talking about painted props here.LOL

I am spinning a 4 blade 30 right now with no problem.

PRG what X? on what center? what boat? does it have a cabin?

A friend of mine powdercoated his bravo 3 prop. They sandblasted and powdercoated it black. It lasted about a month before it started peeling.
DON"T WASTE YOUR MONEY !!!!

It does give them that nice "aluminum prop" look if your trying to acheive that Dave!!!

Brandon that's what I'm turning What RPM do you turn? Us 5100
Are they Labbed? Us yes
What gear? Us 1.50

Your top end is significantly higher than mine you have to be turning 1.36's or else where is the diff?