FAQ

Q: What amount of "Power" do these sails create.
A: Well, we are going to have to do some math for a complete answer. But before you nod off and fall asleep on us, here is a quick table for our sails;

"Adventure" sail data:
Deployed diameter - 42" (106.7 cm.)
Sail area - 9.62 sq. ft. (0.8937 )
"Cruiser" sail data:
Deployed diameter - 56" (142.24 cm.)
Sail area - 17.1 sq. ft. (1.589 m²)

Since the new "Cruiser" sail is about half again the size of our "Adventure" sail, it will approximately DOUBLE the resultant sail force for the same amount of wind (The formula is Load in Pounds = Sail Area * (Wind Speed )2 * 0.00431). Notice that the equations "says" that when you DOUBLE the windspeed you QUADRIPLE the force with the same sail area! Cool huh?

Sail
Windspeed
(knots)
Force
(lb.)
Adventure
Cruiser
5
1.04
1.84
Adventure
Cruiser
10
4.15
7.37
Adventure
Cruiser
15
9.33
16.56
Adventure
Cruiser
20
16.58
29.48
Adventure
Cruiser
25
25.91
46.06
Adventure
Cruiser
30
37.32
66.33
Adventure
Cruiser
35+
HUGE!


But remember, once you start moving thru the water, especially downwind, your apparent wind velocity decreases, so the force from the sail will go down until you and your boat find equilibrium between wind force and the friction of your boat going thru the water. And no, there won't be a test required before you exit this page... :)


Q: After FINALLY breaking down and watching your new Folding Video to master the folding process, I now have a nicely coiled WindPaddle sail, BUT the batten has some twists in it from my "pre-video watching" attempts. My question is HOW do I get the batten to lay in a nice loop/hoop like it was when I bought it with no twists in it or in the batten pocket?" - Name Withheld.
A: Steve (Your wife called during you initial attempts at folding and THAT is how she so easily folded it in her second attempt), twisted battens happen. Simply open up the sail and flatten so that you are dealing with a straight section of the batten/hoop rather than an arc. The just roll the sail pocket around and work your way around the sail until you have the batten untwisted.


Q: I can "sail" downwind with just the force of the wind at my back. Why use a WindPaddle sail or any other kind of sail?
A: One word. FUN and Speed. OK, that's two words, but in our minds they are the same thing, and a sail can push you along the same course faster or with less effort. You can also "beam-reach" or sail across the wind with a WindPaddle sail.


Q: Can the WindPaddle easily mount to SOT's and Canoes too?
A: Yes! Check out these pictures.

Q: I hear there are many kinds of "sail rigs" out there for sea kayak and canoe sailing, yet you don't call the WindPaddle a sail rig?
A: "Sail rigs" are the sum of all the parts that the other guys have that make up their sail... (Sail Rig Comparisons) They have the sail cloth, or sail. They have one or more masts, boomkins or stiffeners, they have the sail mounting apparatus and some have booms, handles or other parts. The WindPadldle is one single integrated sail system that stows compactly, attaches to existing boat hardware and launches instantly when released. "Sail System"...we like the sound of that. We like "Integrated Sail System" even better but we'll stick with "WindPaddle" for now.

Q: So, how does this WindPaddle sail "pop up" and self-launch? Is it like, a spring or something?
A: You got it! There is a "batten" in the perimeter sleeve of the WindPaddle that maintains the sail shape.. This batten is made of virtually unbreakable composite material, and when twisted and folded into "thirds" in the coiled/folded or stored orientation is in a meta-stable configuration. A coiled spring if you will. The energy used to coil and stow the WindPaddle sail is recovered when launching the sail. We're conservation-minded folks, so making use of this stored energy for launching is our way of recycling energy. According to the law of conservation of energy (actually the First law of Thermodynamics for you science-heads), the total energy of a system remains constant. (The roots of the saying; "You get out of life/work/relationships/COLLEGE what you put into it!") If we violated that law we'd be in big trouble with guys like Newton, Einstein and the like.

Q; What material goes into the making of the WindPaddle?
A: The cloth of the WindPaddle is 1/2 oz. rip-stop polyester, the same material that yacht racing spinnakers use. The flexible perimeter batter is made of a proprietary material that will not rust, corrode nor break unless seriously abused. The window is of lightweight clear vinyl. Take look at our Technology page for more details.

Q; If my boat does not have a rudder, how well will the boat track with WindPaddle sail?
Most modern boats track well because of good design with or without a rudder or skeg. A paddle can be used to assist in steering or keeping the boat on it's heading. A rudder definitely will help.

Q: What windspeeds does the WindPaddle really work well in?
A: Winds from about 5 knots to around 20 work well. At 20 knots and above the seas or wind chop get up and require a bit more skill and courage. It of course is more challenging and what we call Fun. A nice sea state site for winds and wind chop can be found HERE complete with Beaufort wind scale conversions.

Q: Why do you talk so much about craft stability and safety. Doesn't the WindPaddle make the craft more unstable?
A: Just the act of being IN your sea kayak or canoe makes it unstable! Craft stability, and here comes the techno-talk, has to do with the distance the center of mass of your boat is above the water AND the direction that center of mass is being forced. If you pop-up a sail on your boat (get it? lol) the wind acting on that sail and the weight of that sail aloft are going to affect potential craft stability. If the wind is coming from behind you, the force will be applied along the length or along the STABLE axis of your craft. If the wind comes from the side, it acts on the sail and the craft in the direction or axis of the least stability.
OK, now for your answer: the WindPaddle converts the force of the wind and keeps the center of effort as low as possible. This means the WindPaddle sail can use the force from the wind and convert this force to forward motion in the most stable and safest manner.