Boat Building Forum

Find advice on all aspects of building your own kayak, canoe or any lightweight boats

Re: Test Paddle to Eliminate Weathercocking
By:PatrickC
Date: 8/30/2012, 1:58 am
In Response To: Test Paddle to Eliminate Weathercocking (Dave Houser)

Excellent.

: Because I build and paddle kayaks without deployable skegs or
: rudders, I always test paddle my kayak builds prior to
: installing the coaming so I can trim the CG location to assure
: the kayak will be wind neutral (in a cross wind). Adjusting the
: seat location is the easiest way to trim the CG location which
: influences if the kayak will weathercock (turn into the wind) or
: leecock (turn downwind). And seat location then determines the
: cockpit and coaming location. I install the coaming last so the
: hull and deck are totally glassed and epoxied, and I also epoxy
: seal the cut edge of the undersized cockpit cutout, so all wood
: is waterproofed. I take the coamingless kayak to the local bay
: in a brisk wind and test paddle crosswind. I move back in the
: cockpit while paddling until the kayak quits weathercocking and
: note my back location in relation to the deck. Knowing my back
: location I then can locate the rear of the coaming. I like my
: fist (5 inches) to fit between my back and the finished coaming.
: This process assures that I will be able to paddle my finished
: kayak (without ballast or cargo) in a crosswind with minimal
: crosswind correction.

: The only hitch to this is method is the rear bulkhead must be at or
: behind the aft edge of the final cockpit opening so the
: installed bulkhead may limit moving the coaming back. It is best
: if the aft bulkhead falls right at the edge of the final cockpit
: cutout to expedite draining water, when performing a rescue
: (re-entry). I install the rear bulkhead after installing the
: coaming. And I install adjustable foot braces at the front
: bulkhead.

: If you install a deployable skeg you want the kayak to weathercock
: when the skeg is up and leecock when the skeg is down.

: Rudders should be the most efficient if the kayak is wind neutral
: when the rudder is down.

Messages In This Thread

Strip: Center of Buoyancy calculation
Gordon -- 8/28/2012, 9:48 pm
Re: Strip: Center of Buoyancy calculation
Eric Compas -- 8/28/2012, 10:36 pm
Re: Strip: Center of Buoyancy calculation
Bill Hamm -- 8/29/2012, 2:59 am
Re: Strip: Center of Buoyancy calculation
JohnK -- 8/29/2012, 3:04 am
Re: Strip: Center of Buoyancy calculation
Allan -- 8/29/2012, 4:01 am
Re: Strip: Center of Buoyancy calculation
Gordon -- 8/29/2012, 7:47 am
Re: Strip: Center of Buoyancy calculation
PatrickC -- 8/29/2012, 1:42 pm
Re: Strip: Center of Buoyancy calculation
Gordon -- 8/29/2012, 3:38 pm
Re: Strip: Center of Buoyancy calculation
PatrickC -- 8/29/2012, 5:31 pm
Re: Strip: Center of Buoyancy calculation
Gordon -- 8/29/2012, 6:17 pm
Re: Strip: Center of Buoyancy calculation
Bill Hamm -- 8/30/2012, 2:37 am
Re: Strip: Center of Buoyancy calculation
Joy -- 8/29/2012, 3:12 pm
Re: Strip: Center of Buoyancy calculation *PIC*
Etienne Muller -- 8/29/2012, 4:48 pm
Re: Strip: Center of Buoyancy calculation
Stephen Troy -- 8/29/2012, 5:05 pm
Re: Strip: Center of Buoyancy calculation
Etienne Muller -- 8/29/2012, 6:05 pm
Test Paddle to Eliminate Weathercocking
Dave Houser -- 8/29/2012, 6:57 pm
Re: Test Paddle to Eliminate Weathercocking
PatrickC -- 8/30/2012, 1:58 am
Re: Strip: Center of Buoyancy calculation
Marc Upchurch -- 8/29/2012, 7:17 pm
Re: Strip: Center of Buoyancy calculation *PIC*
Etienne Muller -- 8/30/2012, 6:56 am
Re: Strip: Center of Buoyancy calculation
Allan -- 8/30/2012, 2:00 am
Re: Strip: Center of Buoyancy calculation
Paul Sylvester -- 8/31/2012, 9:41 pm