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Re: Skin-on-Frame: Beginner Kayak Builder
By:Robert W
Date: 4/5/2016, 4:20 pm
In Response To: Re: Skin-on-Frame: Beginner Kayak Builder (fadedred)

Yes, there are various other forces at play besides the Newtonian third law.
However, their effect is minor.
The blade is not stationary - it does move through the water "pulling" it, and the disturbance at the end of the stroke is the proof.
We can demonstrate the entire concept in a simple way.
Try paddling with the blade (big or greenland) sideways. You'll still get a certain amount of propulsion.
However, you'll be forced to move the blade really fast to keep going.
The difference between big blade and greenland blade is much more subtle.
However, multiplied by the great number of strokes, the efficiency of the big blade becomes apparent.

PS. that's the same reason ship screw propellers are large, but move relatively slowly.

Messages In This Thread

Skin-on-Frame: Beginner Kayak Builder
Chris Gutierrez -- 4/1/2016, 8:33 am
Re: Skin-on-Frame: Beginner Kayak Builder
Marc Upchurch -- 4/1/2016, 8:40 am
Re: Skin-on-Frame: Beginner Kayak Builder
Chris Gutierre -- 4/1/2016, 9:28 am
Re: Skin-on-Frame: Beginner Kayak Builder
Marc Upchurch -- 4/1/2016, 5:19 pm
Re: Skin-on-Frame: Beginner Kayak Builder
Mike Bielski -- 4/1/2016, 9:19 am
Re: Skin-on-Frame: Beginner Kayak Builder
Chris Gutierrezz -- 4/1/2016, 9:29 am
Re: Skin-on-Frame: Beginner Kayak Builder
Mike Bielski -- 4/1/2016, 9:42 am
Re: Skin-on-Frame: Beginner Kayak Builder
scottbaxter -- 4/1/2016, 9:52 am
Re: Skin-on-Frame: Beginner Kayak Builder
Chris Gutierr -- 4/1/2016, 1:11 pm
Re: Skin-on-Frame: Beginner Kayak Builder
Mike Bielski -- 4/1/2016, 3:05 pm
Re: Skin-on-Frame: Beginner Kayak Builder *PIC*
Curtis Fisher -- 4/1/2016, 3:18 pm
Re: Skin-on-Frame: Beginner Kayak Builder
Robert W -- 4/1/2016, 10:34 pm
Re: Skin-on-Frame: Beginner Kayak Builder
Robert W -- 4/1/2016, 10:39 pm
Re: Skin-on-Frame: Beginner Kayak Builder
scottbaxter -- 4/1/2016, 11:34 pm
Re: Skin-on-Frame: Beginner Kayak Builder
JohnAbercrombie -- 4/2/2016, 12:24 pm
Re: Skin-on-Frame: Beginner Kayak Builder
JohnAbercrombie -- 4/2/2016, 12:35 pm
Re: Skin-on-Frame: Beginner Kayak Builder
Ken Blanton -- 4/2/2016, 12:45 pm
Re: Skin-on-Frame: Beginner Kayak Builder
Yoshi -- 4/2/2016, 12:54 pm
Re: Skin-on-Frame: Beginner Kayak Builder
Robert W -- 4/5/2016, 12:49 pm
Re: Skin-on-Frame: Beginner Kayak Builder
fadedred -- 4/5/2016, 2:29 pm
Re: Skin-on-Frame: Beginner Kayak Builder
fadedred -- 4/5/2016, 2:33 pm
Re: Skin-on-Frame: Beginner Kayak Builder
Robert W -- 4/5/2016, 4:20 pm
Re: Skin-on-Frame: Beginner Kayak Builder
fadedred -- 4/5/2016, 8:49 pm
Re: Skin-on-Frame: Beginner Kayak Builder
Bill Hamm -- 4/6/2016, 12:19 am
Re: Skin-on-Frame: Beginner Kayak Builder
JohnAbercrombie -- 4/5/2016, 6:01 pm
Re: Skin-on-Frame: Beginner Kayak Builder
Yoshi -- 4/6/2016, 9:57 am
Re: Skin-on-Frame: Beginner Kayak Builder
Dan S -- 4/6/2016, 1:45 pm
Re: Skin-on-Frame: Beginner Kayak Builder
Marc Upchurch -- 4/6/2016, 2:09 pm
Re: Skin-on-Frame: Beginner Kayak Builder
Dan S -- 4/6/2016, 4:25 pm
Re: Skin-on-Frame: Beginner Kayak Builder
scottbaxter -- 4/6/2016, 7:11 pm
Re: Skin-on-Frame: Beginner Kayak Builder
Bill Hamm -- 4/6/2016, 7:49 pm