Rave V Foiling Trimaran.

Has this boat sailed on its foils yet? If so, it would be nice to see video of that too.
 
Rave V

Doug, they want it to foil and they've apparently had the wind but it hasn't foiled yet-and now they're going to reduce SA. Interesting that they got it up under tow but they pulled it from too low a position, in my opinion.
I wish them well......

PS- they switched the "sonic tube" on the rudder from 4" diameter to 6".....
-they've found that a 6 degree "angle of attack" on the rudder is ideal. Seems awfully high to me. The Rave, Osprey and my boats are set up with zero degrees AOI(angle of incidence) but the angle of attack on the rudder foil during take-off is probably 3 degrees or so.



Doug Lord said:
From the newsletter: http://www.windrider.com/blog/rave-v-ongoing-on-water-testing/

What we learned and the tweaks we are making:

1. With the twisting in the akas we need more torsional rigidity. We will switching from 2.5in tubes and going to a custom D profile. This D profile will still allow us to telescope the amas in and out, but will provide more stiffness.

2. The rudder foil was too small, but the tubes on the main foils are just right. We will be going back to the original design of a 6in tube on the rudder foil, but keeping the 4in tube on the V-foils.

3. Sail plan was aggressive. We found that with the 26ft masts and the sails, we had too much sail area. The boat sailed better when we reefed the sails. We will be decreasing the mast length from 26ft to 23ft and decreasing the sail area.

4. The RAVE V is fastest on a close reach. Unlike the WR17, the RAVE V is fastest when sailing closer to the wind. The other interesting thing to note here is that it points about 15degrees higher than the WR17

5. Freeboard of the mainhull is too much. We will be removing between 4 and 6in of freeboard from the production boat. This will give us better clearance over the water, helping to reduce the effects of hitting waves.

6. Lowering the mainhull side V foil. To get the boat out of the water sooner and allow it to ride higher over the water, we will be lowering the main hull connection point of the main V foils. This will put about 10 more inches of foil into the water right off the bat.

7. Fixed angle of attack on the rudder. Our prototype has an adjustable rudder, but we have found that about 6degrees of angle of attack on the rudder is about perfect for all conditions. For simplicity we are looking at keeping it a fixed position instead of having it adjustable. This will mean that while sailing, you won't ever have to touch the foils, the only thing you will need to do is trim the sails and steer the boat.
Click to expand...
 
It looks like the front of the main hull is out but the akas and stern is buried. As with any new design more tuning is necessary.
 
Rave V

Welcome to the forum! Just as a suggestion, you might want to go over the thread before you post-looks like what you posted is already here.
I hope they can get the Rave V foiling.....
 
Take some of the lift out of the rudder? may be forcing the bows down with as much as you have dialed in.
 
Windrider

Press Release from Windrider,12/31/15 : http://www.windrider.com/blog/merger-of-windrider-and-nickels-boat-works/

Merger of WindRider International and Nickels Boat Works

WindRider International has merged with Nickels Boat Works to provide a more comprehensive product and service lineup to the sailing community. Nickels Boat Works, with a 30-plus year history of quality boat building, is the manufacturing division for WindRider and will now build nine models of sailboats at the Flint, Michigan plant, plus import five models of sailing trimarans from Astus in France. WindRider distributes parts and accessories sailboats and now www.windrider.com will be the exclusive supplier of Nickels Boat Works parts, including parts for the Lightning, Buccaneer, Mutineer, and JY15.

Nickels Boat Works is a world-renowned builder of one-design sailboats and other fiberglass products. It is the prime supplier of the 19 foot Lightning, whose class has over 15,000 boats built since its introduction, and also builds the JY15, Buccaneer, Rebel, Mutineer and Snipe. Innovations at Nickels Boat Works include approved class refinements in hull shape and refined deck layouts resulting in World, Pan American and North American victories. WindRider trimaran models include the WR17, WR16, WRTango; plus Astus models 16.5, 18.2, 20.2, 22 and 24.
 
Rave V

No news, that I could find, on the Rave V except the price: $35,000. When the original Rave came out about 1999 it was about $8-9000. Times change.
 
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