RE: Predator Outrigger Project
The angles I refered to are the sponson planing surface to water angle. With the boat set at its running attitude the sponson bottom should be at about 4-5 degrees up.
The strut settings do a lot. I will dig out some interesting articles for you soon. In summary is this: Changes in strut depth will alter the AoA of the sponson and therefore the behaviour of the front of the boat. Changes in the strut angle will raise or lower the stern and determine the behaviour of the rear of the boat.
Depth = front
Angle = back.
To demonstrate this I played a lot. With the strut too deep the front ran very wet and therefore could not get best speed.
This shows up even more with a vintage style shovel nose hydro. If the strut is too shallow the front gets too much air and lifts too high.....blowover time.
With the tail shaft angled down the back hopped all over the place losing thust, this is where Fiend refered to 0 deg being optimum. Mine is 0 deg on the hydro and the rigger.