Hi Doug,
The serious problems are over. I suspect it was a combination of light winds and my incompetence. Last weekend we had no problems and yesterday we sailed a triangular course with no difficulty.
I think we can still improve leeway, but the big problem now is the rudder/tiller attachments are breaking. With 2 rudders this just annoying, but it needs some thought.
Best regards
Herb
--- In harryproa@yahoogroups.com.au, Doug Haines <doha720@...> wrote:
>
> Well, I didn't have that much trouble herb, you must be doing something a bit differently to me.
>
> I don't use the jib usually unless running off down breeze.
>
> Try scrapping the jib next time
> and see if you can't go better.
>
> Doug
> Former sailor of Sidecar
>
>
> ________________________________
> From: Herb <squirebug@...>
> To: harryproa@yahoogroups.com.au
> Sent: Tuesday, 18 October 2011 7:52 AM
> Subject: [harryproa] Re: Sangduennoi
>
>
>
>
>
>
>
> Dear All,
>
> I have uploaded some of the pictures I took last Sat. to Sangduennoi 20111015. More will follow later as it is taking a very long time to upload the photos 1 by 1. Yahoo will not let me upload them in batch. Any advice on sail shape will be very welcome.
>
> Last Sat. our best shunt was at least 150 degrees by GPS - most were close to 180. At this point the boat is unusable because we can't sail close enough to the wind to leave the marina. The wind was blowing into the marina and all we could do was reach back and forth in front of it. All progress to windward was by outboard.
>
> It is not just me. Gua (who did all the work on the boat and is a good seaman) can't do any better.
>
> Any help will be most welcome!
>
> Best regards
> Herb
>
> --- In harryproa@yahoogroups.com.au, "tsstproa" <bitme1234@> wrote:
> >
> > Its sounds like you have enough sail area up to be powered were you?
> >
> > Why not try two bidirectional boards down all the time connected and counter rotating to a max angle of 30 degrees bidirectional symetrical foils for to aft. You get very precise handling and can crawl to windward if you wanted to.
> >
> > High buoyant low draft proa with only a single steering board you'll need at least a 1 1/2' wide x 5- 6'deep steer board. For helm balance in a greater range of condition. Key note here is that I said "greater range of conditions" .
> >
> > Todd
> >
> >
> >
> > --- In harryproa@yahoogroups.com.au, "Herb" <squirebug@> wrote:
> > >
> > >
> > >
> > > Hi Todd,
> > >
> > > Sangduennoi has 2 rudders, but they lift instead of rotating, so only 1 can be in the water at a time. It is located a little aft of the end of the main boom.
> > >
> > > I think the original sail area was designed to be about 20m^2, but the mast broke last year and was shortened so now both main and jib are at the first reef. I would guess the total area now is about 14 m^2. Rob or Doug do you know for sure?
> > >
> > > The shape of the jib is poor both because of the sag and because we rolled it around a plastic pipe to organize it, but I think it is affecting the shape and now it has to be pushed across during the shunt instead of crossing on it's own.
> > >
> > > Hope to have useful pictures up next week.
> > >
> > > Best regards
> > > Herb
> > >
> > > --- In harryproa@yahoogroups.com.au, "tsstproa" <bitme1234@> wrote:
> > > >
> > > > How many boards where down 1 or two? What size sail area was up?
> > > >
> > > > Todd
> > > >
> > > > --- In harryproa@yahoogroups.com.au, "Herb" <squirebug@> wrote:
> > > > >
> > > > > Dear All,
> > > > >
> > > > > Sangduennoi (nee Sidecar) entered Thai water for the second time last Sat (8 Oct.)
> > > >
> > > > >
> > > > > Only concern at this point is that we couldn't go to windward at all well. I estimate our best shut was about 120 degrees. This wasn't by compass or GPS, but there are several islands and headlands that make estimating angles pretty easy in the Ocean Marina area (Sattahip near Pattaya - about 12N 100E). Any suggestions on how to improve windward performance?
> > > > >
> > > > > Don't have any pictures yet as I accidentally deleted them from the phone.
> > > > >
> > > > > Best regards
> > > > > Herb
> > > > >
> > > >
> > >
> >
>