When your splitting hairs, yes guessing with nymbers! When using data from the 60's, yes guessing from an old theory of use! The control is deficient. The proa is an ancient craft evolution is its creator. Proa's don't sail bow down when pushed they sail bow down when loaded to windward becuase westerners think thats the way they are sailed!
Make each piece work perfect in controlled conditions. Then assemble and assume it will work perfect in real world conditions how often than not does that ever happen!? Between each person perfecting each piece and then the assembly somewhere along the line of "in the make" the theory of how its all supposed to work gets lost or forgotten all together...
Proas were designed in the real world for real world condition some things are better built this way.
Its not the design its the thought process of a person tring to redesign the theory on how a proa should work!
Todd
--- In harryproa@yahoogroups.com.au, Paul Wilson <opusnz@...> wrote:
>
> I am curious Todd, where do you think the numbers come from? Do you
> think someone just made them up or did they get derived from models
> (full and small scale) with tank testing under controlled conditions?
>
> Paul
>
> On 26/09/2011 6:36 a.m., tsstproa wrote:
> >
> > If you over turning moment "weight to windward" is greater than your
> > heel force at higher sailing speeds and you have bow down. Really
> > whats that telling you ..... get a bigger hull, add a lifting foil,
> > reduce sail area, or remove weight from windward. Its that simple.
> > Realistic hypothetical computer generated numbers are telling you what
> > the obvious is.... Rant, laugh, joking, not to be taken to serious,
> > punch in the arm, But you number guys will never be swayed. Ever watch
> > Top Gear there always putting production cars through there paces. One
> > car always looks better on paper than the other. It should do better
> > than the other car according to the numbers but more often than not it
> > doesn't in real life hmmmmmmm. Lots of variables fore and against each
> > design.
> >
> > Todd
> >
> >
>