Re: [Paddlewise] Rudder redux

On 6/29/07, John Winters <jdwinters_at_eastlink.ca> wrote:
>
> Craig wrote;
>
>
> We do have data that crosses those boundaries. Paul Caffyn's data. I'm not
> sure why you so casually dismiss it.
>
>
> Unfortunately, you are incorrect. However, if you are satisfied with Paul
> Caffyn's data then that is a nice thing for you.


Ok John... I'll do what you demanded fromMatt. Support that statement with
data.

If you cannot think of a way to objectively measure the forces acting on a
> boat then it is clear you are not the person that should be set to do that
> task. Some one who understands fluid dynamics, on the other hand, and
> understands test procedures might be able to do it.


Oh, please. If it were easy to do then someone would be doing it now. The
problems revolve around the variables; not finding someone who "understands
fluid dynamics" or "test procedures". Objectively testing for all variables
is impossible. Would you do it in a test tank? Then how would that apply to
the real world? Would you use a 160lb paddler? How would that apply to a
180lb paddler? The nit picking (by, I expect, you) would be endless.

Caffyn recorded a nearly-33% increase in daily mileage with a rudder
compared to no rudder.

If you don't agree with it, then provide some data (not test parameters) to
refute it.


Craig Jungers
Royal City, WA
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