The America's Cup left the NYYC in 1983 but I believe Dennis Conner won
it back in Perth, Aus, in 1987.
So, correct, it did not return to New York City but I am confident the
Americans won it back with an even different keel......I have a book
somewhere on the keel he used in Perth......it's like a fin keel with an
extension that goes back.....there a name for it.....they kept it under
raps until after the races. I'll look it up later.
Conner's tested it in Hawaii before bringing it to Perth......it worked.
Rob Abbott
AZURA
C&C 32 -84
Halifax, N.S.
On 2016-04-30 4:27 PM, Jerome Tauber via CnC-List wrote:
(Sorry - first posted this as reply to wrong posting). Keel lift is
a horizontal, not vertical force. Keels are hydrodynamic foils -
when they are moved through water they cause both lift and drag forces
to develop. Lift is the positive lateral force that allows a boat to
move to windward - drag is the negative, resisting force. A good
sailboat keel design has a high lift-to-drag ratio. Wing keels were
developed by the Australians to win the 1983 America's Cup (first U.S.
loss) by getting around the keel depth rules. When the boat heels,
the wings increase the draft of the keel creating additional lift.
This being said, I'm sure the angle at which the wing cuts into the
water does have an effect but that is not what is meant by keel lift.
The America's Cup left NY in 1983 never to return but this May there
will be some preliminary cup races in NY Harbor with boats that truly
do lift out of the water. Jerry
-----Original Message-----
From: Lorne Serpa via CnC-List <cnc-list@cnc-list.com>
To: cnc-list <cnc-list@cnc-list.com>
Cc: Lorne Serpa <lorne.se...@gmail.com>
Sent: Sat, Apr 30, 2016 2:47 pm
Subject: Stus-List Wing Keel Lift?
So, working on buying my 1st sailboat greater than 15'. It's a 1988
30MkII.
It has a wing keel. I read somewhere that a wing keel generates some
lift.
So....
Does a wing keel create lift?
Should I have more heavy stuff at the back of the boat for increased
angle of attack on the keel?
Or..
don't be silly.. its a 8,000lb boat going 5 knots. It does nothing.
Lorne
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what we do, please help us pay for our costs by donating. All Contributions are
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