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From: Tord Eriksson <tord_at_tord.nu>
subject: [Paddlewise] Musings about rudders
Date: Wed, 4 Jul 2007 10:50:36 +0200
I am just wondering about those kayaks that
have both a retractable skeg and a rudder (retractable
as well, of course) - what's the logic behind ?! A lot
of lines and, more things that can go wrong!

Wouldn't a down-lockable rudder (at the same time
locking the pedals) be simpler and better -
as then it would work both as a skeg and 
as a rudder?!

If our basic kayak is extremely course steady - say by
having nil rocker wouldn't a forward skeg be nice :-)!

We have found that our huge Klepper XXL turns on a dime
(Ok, big dime!) with leeboard down in combination with
the rudder (or paddle, or both) - in fact it turns sharper than
the two feet shorter Aerius II, probably due to lower draft
(we weigh just 20 lbs more when we use the XXL, compared 
to the Aerius II, but has a lot of more packing volume - nice)!

Tord
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From: Craig Jungers <crjungers_at_gmail.com>
subject: Re: [Paddlewise] Musings about rudders
Date: Wed, 4 Jul 2007 10:17:46 -0700
On 7/4/07, Tord Eriksson <tord_at_tord.nu> wrote:
>
> I am just wondering about those kayaks that
> have both a retractable skeg and a rudder (retractable
> as well, of course) - what's the logic behind ?! A lot
> of lines and, more things that can go wrong!


Certainly a lot that can break, all right. Having a skeg in the right place
would help reduce leeway in a crosswind.


> Wouldn't a down-lockable rudder (at the same time
> locking the pedals) be simpler and better -
> as then it would work both as a skeg and
> as a rudder?!


The only reason a rudder can help leeway is that it makes it easier to keep
the bow pointed slightly into the wind to correct for the wind. A skeg,
placed properly (as John Winters surmised) would probably reduce some of the
downwind movement. It would also add resistance and, under the right
conditions, could actually "trip" the boat causing a capsize. Yachts have
been known to trip on their keels in heavy seas and roll.


> If our basic kayak is extremely course steady - say by
> having nil rocker wouldn't a forward skeg be nice :-)!


If the kayak were prone to cocking in the wind, then I would think so. Again
with a resistance component.


> We have found that our huge Klepper XXL turns on a dime
> (Ok, big dime!) with leeboard down in combination with
> the rudder (or paddle, or both) - in fact it turns sharper than
> the two feet shorter Aerius II, probably due to lower draft
> (we weigh just 20 lbs more when we use the XXL, compared
> to the Aerius II, but has a lot of more packing volume - nice)!
>

It would be nice to see comparison times for 180 degree turns with the
leeboard down compared to the leeboard up. And various combinations. Do you
hold your paddle so as to extend it farther outboard when you do these
turns?


Craig Jungers
Royal City, WA
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