I would like to have only one daggerboard in the middle, but the mast is there. I really like increased upwind performance daggerboards give. I can not see any other way to do this so far. I am interested to hear any ideas. In my opinion rockerless hull shape requires some board close to the middle to make it go straight.
Regards,
Arttu
tsstproa [bitme1234@yahoo.com] kirjoitti:
> So four boards total to control the boat? Spiral up not down! Or is this just an experiment to get variable control from different concepts? I see multiple combination in controlling helm balance with the two fixed and two steerable boards.
>
> Thanks for shooting and posting the vid.
>
> Todd
>
> --- In harryproa@yahoogroups.com.au, arttuheinonen@... wrote:
> >
> > Shunting is pretty easy. The harder the wind the better it shunts,
> > strange?? This is very clear also without the jib. With the main only
> > the boat tends to steer upwind with less effort than to lee side, IF I
> > use the rear rudder. With the front rudder this is barely noticeable.
> >
> > BUT the rear rudder must be angled to make the boat neutral (10-15
> > degrees). It will maintain the chosen position bcause of friction.
> >
> >
> > Regards,
> >
> > Arttu
> >
> >
> >
> >
> > > Brilliant videos! Many thanks. Please keep them coming. Speed looks to be
> > > 10 knots on the chart plotter? Wind about the same judging by the lack of
> > > white caps? How easy was it to steer and shunt with only the main?
> > >
> > > rob
> > >
> > > On Mon, Aug 22, 2011 at 2:46 AM, Arttu Heinonen
> > > <arttuheinonen@...>wrote:
> > >
> > > > **
> > > >
> > > >
> > > > Hi ,
> > > >
> > > > I uploaded two new videos on youtube. On the first one you can see how our
> > > > mast
> > > > is bending. There is significant intentional twist on the main because of
> > > > strong
> > > > wind. We had to furl the jib soon after this. The speed was then 7.5 knots
> > > > upwind with the main only.
> > > >
> > > > http://www.youtube.com/watch?v=MOX1YkTrv5c&feature=related
> > > >
> > > > On the other video you may see some overall appeareance of our boat. There
> > > > is
> > > > lots of main sheet . We changed the main sheet to 1:2 and installed extra
> > > > tying
> > > > points both for the sheet to attach and for tying up purposes. I think it
> > > > wprks
> > > > now better. It is easier to handle winches now with the main sail only,
> > > > forces
> > > > are lower.
> > > > http://www.youtube.com/watch?v=C0SagTSVrL8
> > > >
> > > > regards,
> > > >
> > > > Arttu
> > > >
> > > >
> > > >
> >
>
>
>