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New A Cat Design #255105
11/21/12 01:26 PM
11/21/12 01:26 PM
Joined: Sep 2004
Posts: 126
southern Ontario
Twister Offline OP
member
Twister  Offline OP
member

Joined: Sep 2004
Posts: 126
southern Ontario
Is this class legal? I thought there was some rule limiting foiling?
http://www.carbonicboats.blogspot.com.au/


Ryan
Dart 18 #4860
-- Have You Seen This? --
Re: New A Cat Design [Re: Twister] #255106
11/21/12 01:33 PM
11/21/12 01:33 PM
Joined: Jan 2005
Posts: 6,049
Sebring, Florida.
Timbo Offline
Carpal Tunnel
Timbo  Offline
Carpal Tunnel

Joined: Jan 2005
Posts: 6,049
Sebring, Florida.
What's up with the tops of the daggerboards?

Seems they are pointed outward, are they S boards or C boards?


Blade F16
#777
Re: New A Cat Design [Re: Twister] #255108
11/21/12 01:35 PM
11/21/12 01:35 PM
Joined: Jun 2001
Posts: 12,310
South Carolina
Jake Offline
Carpal Tunnel
Jake  Offline
Carpal Tunnel

Joined: Jun 2001
Posts: 12,310
South Carolina
There is a rule that limits how close together the daggerboard tips can be to each other when fully down...foiling is not technically prohibited - they just made it much harder to do from a technical standpoint.

8.1 No part of each hull or hull appendages below the waterline shall be less than 0.75 meters from the centre line.
8.2 Movable and retractable hull appendages shall be inserted from the top or be capable of being fully retractable into the hull.

I'm not sure how 8.2 applies to rudders...I saw one boat with some small horizontal stabilizers on the rudders at worlds this year...so presumably this applies to daggerboards only?


Jake Kohl
Re: New A Cat Design [Re: Timbo] #255109
11/21/12 01:38 PM
11/21/12 01:38 PM
Joined: Jun 2001
Posts: 12,310
South Carolina
Jake Offline
Carpal Tunnel
Jake  Offline
Carpal Tunnel

Joined: Jun 2001
Posts: 12,310
South Carolina
Originally Posted by Timbo
What's up with the tops of the daggerboards?

Seems they are pointed outward, are they S boards or C boards?


I don't know what you call them, but they're not C or banana boards. They are designed to allow you to tune the amount of lift vs. side force you get out of the foils. I also wouldn't expect this boat to be fully born on foils - just "lift enhanced".

[Linked Image]


Jake Kohl
Re: New A Cat Design [Re: Jake] #255114
11/21/12 02:14 PM
11/21/12 02:14 PM
Joined: Sep 2002
Posts: 3,224
Roanoke Island ,N.C.
Team_Cat_Fever Offline
Carpal Tunnel
Team_Cat_Fever  Offline
Carpal Tunnel

Joined: Sep 2002
Posts: 3,224
Roanoke Island ,N.C.
Originally Posted by Jake
Originally Posted by Timbo
What's up with the tops of the daggerboards?

Seems they are pointed outward, are they S boards or C boards?


I don't know what you call them, but they're not C or banana boards. They are designed to allow you to tune the amount of lift vs. side force you get out of the foils. I also wouldn't expect this boat to be fully born on foils - just "lift enhanced".

[Linked Image]


We'll have to see on the foiling part, won't we? They're S boards and as long as they don't extend past max beam ( up or down) or inboard to the specs Jake stated, they are legal. They were tried on DOGzilla and the Alinghi cat back in the Deed of Gift build up, but I don't think they got used in the actual match. I love this boat,Dario has done an outstanding job. Can't wait to see if it is a performer.


"I said, now, I said ,pay attention boy!"

The cure for anything is salt water - sweat, tears, or the sea
Isak Dinesen
If a man is to be obsessed by something.... I suppose a boat is as good as anything... perhaps a bit better than most.
E. B. White
Re: New A Cat Design [Re: Twister] #255116
11/21/12 03:50 PM
11/21/12 03:50 PM
Joined: Jan 2005
Posts: 6,049
Sebring, Florida.
Timbo Offline
Carpal Tunnel
Timbo  Offline
Carpal Tunnel

Joined: Jan 2005
Posts: 6,049
Sebring, Florida.
I liked the way he built the beams too, curving up off the hulls to keep them out off the wave tops.

Nice! http://www.youtube.com/watch?v=kIfOjkB17BA


Blade F16
#777
Re: New A Cat Design [Re: Timbo] #255195
11/26/12 10:52 AM
11/26/12 10:52 AM
Joined: Dec 2001
Posts: 5,590
Naples, FL
waterbug_wpb Offline
Carpal Tunnel
waterbug_wpb  Offline
Carpal Tunnel

Joined: Dec 2001
Posts: 5,590
Naples, FL
Originally Posted by Timbo
I liked the way he built the beams too, curving up off the hulls
a la H-16 style, just better, right? Goin' retro....


Jay

Re: New A Cat Design [Re: Twister] #255200
11/26/12 11:15 AM
11/26/12 11:15 AM
Joined: Aug 2011
Posts: 774
Greenville SC
bacho Offline
old hand
bacho  Offline
old hand

Joined: Aug 2011
Posts: 774
Greenville SC
I'm sure he has a hobie 16 in mind when he designed those!


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