Thanks Rick, I pick up something locally. Swann thumb camera.
http://www.youtube.com/watch?v=wWRXllhPiag
Pretty happy with performance of model. The rocker leeward hull might need to be alittle deeper. Might want to widen both hulls a tad or at least windward hull to maybe 22''wide.
All the mods you mention would seem to benefit for sure but add to complicating the build. For now just simple box hull formsm with low free board.
I havn't added the center dagger board yet. The boat with "out"
boards had lots of bite. Just adding the center with the two end boards just isn't appealing to me but I will do it never the less. Where do you want it in line with the two inboard or outboard of leehull or in hull?
Todd
--- In harryproa@yahoogroups.com.au, Rick Willoughby <rickwill@...> wrote:
>
> The board does not need much rounding on the edges because it is not
> working through a range of angles like the rudders.
>
> I have been working on a 12% thick section with a 4% camber. So the
> leeward face is still slightly convex; not flat.
>
> You should be able to shift area from the current rudders to the
> board so total blade area is not much more than you have now.
>
> Something that might be useful for producing hands free video is a
> little camera like this:
> http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=10093
> It could be mounted on the boat to give a close up view of things.
> They will hold about 45 minutes of recording. You can edit the good
> bits into a smaller clip.
>
> Rick
> On 07/06/2011, at 9:26 AM, tsstproa wrote:
>
> > Yeah thats next I remember your discussion on toyote.
> >
> > Todd
> >
> > --- In harryproa@yahoogroups.com.au, Rick Willoughby <rickwill@>
> > wrote:
> > >
> > > Todd
> > > You should test a dagger board in the middle of the hull with the
> > two
> > > small rudders. Give the board a slight camber so it is lifting to
> > > windward.
> > >
> > > Another observation I mentioned with the drive test is that the boat
> > > crabbed sideways quite easily. A decent dagger board would prevent
> > > this.
> > >
> > > Rick
> > > On 07/06/2011, at 6:09 AM, tsstproa wrote:
> > >
> > > > Development of Proa Squared along with boards tested.
> > > >
> > > > http://www.youtube.com/watch?v=DG1LuSq_CLg
> > > >
> > > > In the video the proa squared free sailing version worked fine
> > with
> > > > the single 4 1/2 sq inch with about 3- 3 1/2 sqinches of board
> > > > submerged. It actually tending to bear off the wind more than I
> > > > expected with this single board down. So the bigger boards where
> > > > not tested in single board down configuration. I proceeded in
> > using
> > > > the two of the smallest boards for two board down sailing. What I
> > > > experienced was heavy weather helm no matter how hard over boards
> > > > were held over they were over powered by the sail the model was
> > > > uncontrollable shunting, sailing in a straight line etc...Lots of
> > > > finesse required and even then very frustrating. So I jumped up to
> > > > the second 1 1/4''x 5'' larger retangular board wha la great
> > > > success balanced sailing and shunting just a touch of weather helm
> > > > coming out of a shunt . On on the hard though hands free sailing
> > > > straight.
> > > >
> > > > With this design of craft shunting happens so fast the
> > advantage of
> > > > leaving both boards down is quit significant maintaining control
> > > > and predictability allows me to sail faster not the other way
> > > > around fight helm to maintain control.
> > > >
> > > > enjoy
> > > > Todd
> > > >
> > > >
> > > >
> > >
> > > Rick Willoughby
> > > rickwill@
> > > 03 9796 2415
> > > 0419 104 821
> > >
> >
> >
>
> Rick Willoughby
> rickwill@...
> 03 9796 2415
> 0419 104 821
>