Rob Seeing blind date at the dock i can really see the narrowness of leeward hull. Have your change the design sinse. I can see where the fullness, high cp would be needed.
On my flat bottom or Square Harry I couldn't get the model to handle correctly with the small narrow leehull forms the bluffness seems to make them trip up. On Slamtacker the width of the windward hull and leeward hull are of the same at sheer and keel widths 2 1/2'' or 30'' sheer width and 15'' keel width with a 36'' sheer height for both hulls windward hull is 16'' and leeward hull is 24''. The windward hull is just shorter thats it. With the small fuller leeward hull configurations I was having trouble with the hull supporting heeling force from sail even with weight to windward.
Is blind date 50' ? It almost seems it would handle the load of sail better at speed with just a tad longer hull thats a little taller and a little leaner at the bows.
Whats your take on it?
Yes my design was inspired by your proas. The goal was to understand how weight to windward worked as you had presented. I doubt that my model is a goood representation of any of your designs. Look how wide and huge the leeward hull is on my model. This lee hull configuration is what worked for me in this length all I had to do was make the windward hull support the weight needed to prevent heeling while maintain close to the same draft as leeward hull for some really rock solid sailing.
http://www.youtube.com/watch?v=jgCSYi5pwS8
http://www.youtube.com/watch?v=IfXaYpZ-oUc&feature=related
Todd
--- In harryproa@yahoogroups.com.au, Rob Denney <harryproa@...> wrote:
>
> Looked to me as if the crew was pulling on the sheet between the turning
> block and the winch, which will always be hard work. The reef would have
> added some load to the sheet as well. Generally, the rig rotates at the
> same speed as the boat comes onto course. Trying to go faster is hard work
> unless you are in synch with the helmsperson, and with the big roach mains
> (not RB's) causes the boat to luff rather than sail. Easier to take up the
> slack, then trim the last metre.
>
> request to the film crew: Include the sheet trimmer on the next video.
>
> Thanks for all the positive comments. They are extremely gratifying.
>
> rob
>
> On Tue, Sep 13, 2011 at 11:16 PM, Carlos Solanilla <
> carlosproacarlos@...> wrote:
>
> > **
> >
> >
> > Great video
> >
> > I think it will cater to many people looking for a fun boat. One BIG thing
> > missing is any film of the inside, accomodations whilw sailing, that in my
> > mind would have a great appeal to the other half (the missus) making the
> > decision. I know you are not marketing the boat but this film greatly
> > advances the argument of a harryproa as an alternative to a catamaran.
> >
> > Somewhere close to the end of the video it looks like one of the shunts
> > required some additional muscle from the crew- where you forcing the
> > shunt?or speeding the swing of the mast? Or is this standard procedure to
> > pull hard on the lines while the other person is grinding?
> >
> > Dont forget to film the interior next time!!!!
> >
> > Sent from my iPad
> >
> >
>