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Old Dec 12, 2011, 03:19 PM
Dan Elliott
United States, TN, Nashville
Joined Jul 2011
111 Posts
Are the Auto Adjust Tabs accuated by the operator with the transmitter, or is there a mechanical "trim" like a hydrofoil? Are the "wands" hooked to sensors?
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Old Dec 12, 2011, 07:02 PM
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Dick L.'s Avatar
Minnesota, USA
Joined Aug 2002
2,152 Posts
Dan - wands are mechanical connect. As they are pushed back, they mechanically adjust the tabs. There is a soft spring for return to vertical, and the tips of the wands are adjustable for depth - which in turn adjusts the height of the hulls off the water. I (and Doug) like to keep the hulls clear of any wavelets - but not too high to create unsteady condition. I recall photos of the amas with the wands by themselves - but just can't find at the moment. Have photos at home and at work (different ones) also doesn't help. I'll keep looking and maybe surprise you. [smile]
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Old Jan 11, 2012, 09:34 AM
Registered User
Espaņa, CT, Barcelona
Joined Aug 2011
21 Posts
Hello and a happy new year,

In youtube you can have a look at 5 video's named "DRW-1_01 wingsail (2, 3, 4 and 5) ,
DRW-1_01 wingsail (1 min 17 sec)
) ", from our first and failed attempt (we had to remove half of the articulated sail), and another named "Red Wing sail nš1, http://www.youtube.com/watch?v=68fcO3oeS3o".
PABLO
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Old Jan 11, 2012, 09:35 AM
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Espaņa, CT, Barcelona
Joined Aug 2011
21 Posts
another named Red Wing sail nš1, "http://www.youtube.com/watch?v=68fcO3oeS3o".
PABLO
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Last edited by salazar; Jan 11, 2012 at 09:43 AM. Reason: video reference
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Old Jan 17, 2012, 03:19 PM
Dan Elliott
United States, TN, Nashville
Joined Jul 2011
111 Posts
Very Cool! Even with only half of the Wing it seemed to work well.
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Old Jan 19, 2012, 05:42 AM
Registered User
Espaņa, CT, Barcelona
Joined Aug 2011
21 Posts
Hi DAN:
And yours, how is the wing sail?
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Old Jan 25, 2012, 12:09 PM
Dan Elliott
United States, TN, Nashville
Joined Jul 2011
111 Posts
I've managed to get a jib made and rigged. I took it out to the community pool (which is closed for the winter) just to see how she sat in the water. There was a little breeze, and the wings seemed to push the cat around easily. I'll have to wait and see how well she does in a stronger breeze out on the lake.
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Old Jan 26, 2012, 09:51 AM
Registered User
Dolores, Colorado
Joined Dec 2007
1,581 Posts
I wonder, if you have two winches in the hull, one controlling the wing and one the flap, if that would not make it easier than having a complicated wingmounted affaire.
On a Robbe F14 or 16 I would use the twin sticks to controll both winches.
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Old Jan 27, 2012, 03:00 PM
Dan Elliott
United States, TN, Nashville
Joined Jul 2011
111 Posts
The Camber Control Servo w/ 3ea. Cables works great. I had to put it in the wing so that the wing assemble could hang without cables obstructing the movment of the wing. I am working on a working Gennicker which will require it's own which. I'm also working on installing a gryro with a high speed servo to prevent flipping.
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Last edited by Dan Elliott; Jan 28, 2012 at 11:26 AM.
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Old Feb 01, 2012, 09:46 AM
Registered User
Espaņa, CT, Barcelona
Joined Aug 2011
21 Posts
DAN:
Have a look at that information:
http://www.nmosails.es/nmo-AlaFlexible/AlaFlexible.html
Perhaps it gives you more ideas for better results .....

Your photos are very interesting, but I can't see the details. Could you resume the geometric parametres of the wing sail, weight, hull, balance of mass and sail centers, dimensions, aso.....?

Have you sailed with it? Are you going to film it?
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Old Feb 09, 2012, 01:09 PM
Dan Elliott
United States, TN, Nashville
Joined Jul 2011
111 Posts
Salazar,
Sorry for taking so long to reply. I have a 3-D model of my boat in a DXF format. I will e-mail a copy of it if you like. Send me an e-mail at: <delliott@1220.com>

I have tested it in the community pool, but just to see how it sat in the water. My camera's format is not compatable with this forum, but I will send you a copy to your home when I get some footage.
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Last edited by Dan Elliott; Feb 09, 2012 at 01:16 PM.
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Old Feb 12, 2012, 08:45 PM
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D design's Avatar
New Zealand, Northland, Totara North
Joined Feb 2012
566 Posts
add a jyro to the sheeting winch.
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Old Feb 29, 2012, 08:33 AM
Dan Elliott
United States, TN, Nashville
Joined Jul 2011
111 Posts
I have a purchased a Gyro originally used for a hydrofoil. I'm going to install it on the main winch servo first as a test, then maybe on the wing camber servo to see which works best. I'll post some photos when I get the Gyro installed.
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Old Apr 17, 2012, 11:58 AM
Registered User
USA, LA, Mandeville
Joined Feb 2005
886 Posts
Info, some details and a video of a 48", multi section wing, catamaran in Canada.

http://www.rcsailing.net/forum1/show...in-record-time
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Old Apr 20, 2012, 07:30 AM
Dan Elliott
United States, TN, Nashville
Joined Jul 2011
111 Posts
Nice, I hope my boat does half as well when I finally get it out on the lake. It looks like the bar has already been set very high for RC Wing Sail Catamarans. It looks like I'm going to be building another boat here soon, based on this footage alone. Hew thanks for the link.
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