Andis

Hi, I am running a 28 ft Scorpion rigid inflatable with 2x300 verados spinning 21p Rev4s.
Recently repowered the boat from its 2x250 hpdi's (blew them) and the extra weight of the verados squats the stern down - It's a light and slim hull, less than 3000 lbs and 8 ft across, really designed for lighter engines...
I have the engines at the right height (I think, or maybe a touch too high) and get a prop slip of 10%. Boat reaches 67 mph at 6200 wot, and cruises at 44 mph at 4500 rpm.
I love the speed and love the engines, but I need props that would lift the stern more. Do you have any suggestions? How about 5 blades?

Jonesyfxr

iTrader: (1)

Contact B Blades, they will guide you in the right direction.

phragle

iTrader: (3)

I had a giirl ask me about stern lift once... I told her to try spanx...

Anybody ever tried partially filling a rib with helium???

SB

iTrader: (1)

Thanks Phragle - High Pressure Ice Coffee out my mouth. JAckass ! LOL !

Jonesyfxr

iTrader: (1)

Lol

540apache

I prefer hydromotive, everything they have suggested has worked for me.

turbo rr

iTrader: (3)

Have you tried to spin the props inward?

phragle

iTrader: (3)

Andis

Helium won't work. It's small molecule size escapes the tube seams too quickly - at the pressure these are supposed to work. Some people use Nitrogen and report 3-4 kts pickup.

Andis

How would I do that?
Why would it work?