Re: [Paddlewise] Appreciation of Skegs (was Nordkapp flame )

From: Michael Daly <michaeldaly_at_home.com>
Date: Thu, 10 Aug 2000 22:03:32 -0400
From: "Larry Bliven" <foxhill_at_shore.intercom.net>

> i wondered why a fine boat needed a skeg

While I can't claim to be up to date on the topic, twenty
years ago, when I was an aerospace engineer, variable
shapes in aircraft was a hot research topic.  Wings were
being experimented with that could change camber 
and such without resorting to leading edge devices, 
flaps etc.  The entire wing section was flexible so that
actuators could reshape the wing on the fly, just like
a bird can do.  

It seems to me that a variable-shape kayak would be a fine
thing.  To be able to change from a long fast cruiser to a 
rockered playboat as conditions change would be great.
A skeg is just, IMNSHO, a step in that direction.  Skeg
up - take advantage of the rocker.  Skeg down - get better
tracking.   

Speaking of variable shapes...  Mark Rogers of Superior Kayaks
had mentioned at the Great Lakes Sea Kayaking Symposium
his theory that the baidarkas with the bifid bows were sufficiently
flexible as to provide steering.  He cited the construction of the
bow with its ivory bearing plates in the hull frame members etc
as providing a means to allow the kayaker to push on the 
frame with his feet and cause the lower part of the bow to bend 
and act as a bow rudder.  He says that the modern replicas have
skins that are too stiff to allow such action today.  He has never 
constructed a kayak with such materials as to test the theory.

Mike



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Received on Thu Aug 10 2000 - 19:07:18 PDT

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