Quent

DrN., I am going to try the IMCO 2" Shortie this week. I have a different situation, Laveycraft cat bow rider, Crockett 935 Hp Whipple. My current set up is Max Machine 1:34 upper and standard IMCO lower.

I hope my 32 BBlades B1 will work ok. I currently get on plane with almost no cavatation (I suppose the extra 500 lbs of bow stuff rolls the boat over as well), acceleration is terrific. Chris Camire at Laveycraft says they are currently putting 2" Shorties on their cat as standard unless requested otherwise.

The reason that I'm trying this is that the boat will reach 100 mph quickly but hits a wall and then needs too much time to get to top speed. I'm inpatient and hope this will help solve that dilema without breaking anything. I'm reminded once again why I don't have twins.

Good luck. I keep you posted. Quent

Smitty

Everybody keep this thought in mind--

More blades may fix the slip problem, but when you add blades to a prop you also increase stern lift. Baja's need to BOW lift to get to the higher speeds. Just something to think about.

I am going to lower my drive this winter and go back to 4 blade props and work on getting bow lift so I can get to 90 mph.

articfriends

Thats why after getting cavitation,slip and porpising from raising my drive 1" I bought a drive spacer instead of a 5 blade,my boat didn't work well with just the 1 inch up,wildcards outlaw is the only one I have heard that does work and he went 3 inches up.The hulls must be very different between a 272 and 25 outlaw. He's also running into the 80's with a 540hp merc525,my boat needed 700 hp to get there,Smitty

DrNautica

Artic,

I'll second the 700 HP to get into the 80's with the 272 / Shooter hull.

As of now, I'm looking at the Merc Sportmaster standard length lower and staying with the 4 blade. I know the standard length stock XR worked well as did my previous Bravo 1 outdrive with a hydromotive nose cone. Actually, when I went to the XR drive sans cone, I scrubbed about 2-3 MPH.

Smitty

Hey Guys

Don't feel bad. I have 1500 hp and I am only in the mid 80's

I should be 90 or better, I just am happy to be on the water this summer. I will get it dialed in for next year over the winter.

Smitty

30 outlaw 2005

Smitty are you looking to sell the 1 inch lowers you have. I am thinking of putting a set on my 30. I know of someone with a 30 with a 1 inch raised x and gets better top end. So im thinking a 1" lower would be perfect for me.

DrNautica

Well, I ordered the Mercury Racing Sportmaster standard length lower and a lab finished 28" Bravo I four blade this morning.

Wish me luck.

30 outlaw 2005

Good luck hope it all works out good

Marginmn

Dave, I have a set of standard length sportmasters sitting up in Mike's storage unit. How much did they ding you for on the new one?

30 outlaw 2005

Is there a big difference between the sportmaster and bravo lower units?