A.O. Razor

+1

Marginmn

iTrader: (1)

And what kind of numbers did it run with the previous props?

Wildman_grafix

496's?

Single With Twins

iTrader: (1)

They are xr shorties sportmasters for drives with merc 525's.

Single With Twins

iTrader: (1)

Keep in mind that 91 mph was at just over 4900 rpm with 5 people in the boat and almost a full bellly of fuel......tank was ttoaly full and only had about 20 miles of running out of it when I ran that speed......seems pretty good to me.

Single With Twins

iTrader: (1)

Best I got out of it was 98mph with previous props, light on fuel and only two in the boat at 5200rpm

Single With Twins

iTrader: (1)

The "Reggie" number on the factory sheet is 102mph with 6 blade 31 herings.

Wildman_grafix

What was your goal for the 7 blades?

When you got the boat did you have the 6 blade 31's?

Overall how do you like the boat, I have wondered about these, seem like a nice size and shouldn't be bad working on it with the Staggered motors.

Marginmn

iTrader: (1)

Speaking frankly, if you can only pull 4900 RPM out of a set of 525s then those props are just wrong for that boat and engine package. I'm sure Mercury racing would tell you the same thing. You should be running 5100-ish with a full load and 5250 with a light load. On a brutal hot humid July day you may only be able to pull 4800 out of them with that kind of load. The boat is over-propped with that set of 7 blades IMO.

RaggedEdge

Scott R. @ Merc Racing told me to shoot for the 52 -53 mark with an average load, claimed the 525's pull real hard right around that mark. With the current 5 blades I never see less than 5 regardless of load or weather. Actually the 4 blade Bravo's act pretty much the same. Good water and air I will turn over 5400 and it acts like it is still pulling well.