Mike,
I understand the feeling of have an automatic transmission like sailing qualities and I'm trying to design as much "automatic" sailing in as I can to this boat.
see my sail change here:
http://youtu.be/LHwp0ZBbn84
yeah, I've used plenty of ideas used on other boats! thanks y'all!
I want to have an easy to use set of lines and I think this show it?
Simple sailing for when I'm mostly asleep at the wheel during the Ultimate Florid Challenge!
--- In harryproa@yahoogroups.com.au, Mike Crawford <mcrawf@...> wrote:
>
>
> The one time I'd want to tack a Harry would be to short-tack up a long
> inlet in light breezes with a schooner rig.
>
> I've got about five miles to truly open water, and switching two sails
> over on every shunt could get to be a bit of a hassle, particularly
> because the inlet narrows to 1/2 km at points:
>
> http://mapq.st/OyFukp
>
> It's for this reason that we're upgrading our monohull to a
> self-tacking jib. I actually do like to tack some of the time, the way
> I also like to drive a standard transmission some of the time, but there
> are days when it's nice to just steer without getting up or putting down
> one's cold drink. The catamaran won't really handle a self-tacker, so
> it remains old-school.
>
> In any case, it would be neat to have the huge sail area and lower COE
> of a schooner while tacking when the wind is right.
>
> Very light breezes would demand a shunt, perhaps with the lw hull to
> windward. Heavy winds would also demand a shunt. But in the middle
> area, tacking could save some time.
>
> That said, it's possible I'm making the wrong assumptions about shunting.
>
> - Mike
>
>
> Rob Denney wrote:
> >
> >
> > I have never seen the need to tack a harry. Shunting is just too easy
> > and diagonal stability too low to do it in any sort of breeze. A few
> > years ago I designed and built a cat (W) with the ballestron rig in
> > one hull. It tacked pretty easily, so no reason why a similar proa
> > wouldn't. Gybing is a different ball game. In narrow waterways,
> > gybing is handy when running dead square.
> >
> >
> > The key is not so much making a boat with low enough windage etc to
> > tack, but having both hulls the same length to make it safe. There
> > have been a few "harry cats" drawn, but apart from W, none built,
> > mostly because a proa makes more sense.
> >
> > rob
> >
> > On Tue, Jul 17, 2012 at 11:12 PM, bjarthur123 <bjarthur123@...
> > <mailto:bjarthur123@...>> wrote:
> >
> > so can the visionary's tack? i assume elementary can since it has
> > no cabin. ditto for any traditional pacific proa like russell
> > brown's. one would just need to arrange for the main sheet to
> > accommodate a load from the opposite side.
> >
> > would be an interesting exercise to design a full-sized harry that
> > could point well enough to tack. unarig i presume for efficiency.
> > fairings on the beams. i wonder if the accommodations could be
> > kept as spacious.
> >
> > do you think it would be more difficult to tack from rig-to-lee to
> > rig-to windward, or vice versa, or both the same? i presume gybing
> > is not a problem.
> >
> > ben
> >
>