I get the idea!....but the hight of the wing and going fast in "rough" sea with sudden wind changes and a minimum of boat in the water (moment arm]....maybe I have done to many years in sailboats....so I will just follow the thread to get more knowledge, it is very interesting

I would imagine the effect of wind change forces would be minimal compared to the forces of air already passing over the wing, due to the boats speed being maybe 5-10 times faster than the wind speed (unlike sailing where it's closer to equal)? I'm more concerned about the lateral shock loads of something that tall when getting tossed about in the rough stuff. Even slow airplanes have a fixed "fin" per se in front of the wing/flap that adds rigidity.

Awesome project... Can't wait for the results.

I totally agree with you, and the wing is all perfectly designed for the boat when taking hull lenght, beam, weight etc. in calculation, the mounting which gives the stability of the wing etc..

Great project.

The hydraulic part is super engineering, would love to have that in a boat.

Thanks everyone for your encouraging comments, had a few days of enjoying the weather. Today i made and fitted all the stainless steel wires to support the top of the tail fin these are pre-tensioned by turn buckles as i don't want any movement at the top of the fin. I used the string line from the bow eye to set the fin in the straight ahead position as i am using it fixed to start with.

Peter

Awesome work Peter, I hope it works out well. It looks awesome. We won the OPA National Championship this year with Ilmor MV8 570 pushing Lee Ann Peluso, OPA's only female driver this year. Very Proud of her and the Team at Ilmor and all those that helped us with the new powerplant this year.

[QUOTE=peterunwin;4200137]Hi Chris,
The SV29 is far from ill handling up to mid 90's it is pretty planted but being a surface drive there is very little left in the water beyond these speeds, if you catch a wash from the side it will start to chine walk as there is nothing left in the water for it to react against, if it were an immersed propellor boat you can counter steer to correct it. As the surface drive does not have anywhere near as much sideways grip or leverage steering inputs don't damp out the chine walk anywhere near as well. The tail fin should damp out the chine walk and
allow us to go even faster more comfortably and safely, using aerodynamics is much more efficient than dragging something through the water it also has the benefit of the faster you go the better it works.

Creativity workmanship amazing as far practical engineering I'm curious to see if your theory will play out. As a pilot with lots of hours multi engine turbo fan experience I know my way around rudders and the forces on a rudder especially the laderall/horizontal loads you'll be creating along with the shock loads from rough water boating I'm skeptical about durability. Beyond that I'd be very concerned about high speed handling characteristic and your ability to react to these unforseen/uncharacteristic behaviors such as how do you get a sail to drive straight and level? However I'm intrigued as well as highly skeptical best of luck please be careful. Cheers


Cheers mate

Have you had a chance to try this out yet Peter?

Hi pq260ho496,
It has been very windy down here so we have only run up to low 70's so far but even at these relatively low speeds it is very stable. Water has been pretty rough and all the mountings are holding up very well with no noticable flex at the top of the fin it will be interesting to see how it performs at higher speeds when we get some smoother water.
So far

Peter

How is it trying to dock it in a breeze?

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