It seems a lot of extra work. When you consider the lack of rocker, a Kelsal system of flat panels cut and shut with radius curves would seem easier than a Farrier vertical strip. The method Rob is suggesting of having solid glass on the edges to make the curves and a polystyrene block on the lower bow saves so much time and effort in fairing and is still capable of some curves if you make fairly large radius edges for the few joins.
I am going with this method for the ww hull but incorporating a flare to ww as well as the chamfer to the bridge deck. I will have a 150 degree keel chine and 75 degree chine for the bottom /topside join but softened to a 100mmm radius
If you wanted a Visionarry ww hull, I reckon it could be done relatively smoothly with the Kelsal system , including cutting and shutting on the top of the windows to make the compound curve. If rebates are made for the cutting and shutting joins, then fairing becomes so much less. I will post a picture in Robert's Harry of a poorly done grooved foam bottom to show how the bottoms can be made curved with foam. It should have been made in one piece on the table and would have made a smoother join.
--- In harryproa@yahoogroups.com.au, George Kuck <chesapeake410@...> wrote:
>
>
> Hello Rob
>  
> What method would you use to maintain the sculptured round look of 12 M Harrypros ?  What method do the current plans show for foam core construction ? 
>  
> I would assume that it might be built using vertical strip foam such as is used for F-boats. With foam would you need to put wood stringers on mold or are the mold stations close enough together that you could use foam strips lengthwise over mold forms ?  For WW hull would a combination of flat panel with strip foam for bottom and hull deck curve work ?  I do not think there would be much advantage to this method on LW hull since the side panels would not be vary wide.   What would you recomend for a stock 12 M Harryproa?
>  
> Happy sailing,
> George Kuck
> Chestertown, Md.  
> --- On Thu, 4/1/10, proaharry <harryproa@...> wrote:
>
>
> From: proaharry <harryproa@...>
> Subject: [harryproa] Re: off axis between tow/& Harryproa's
> To: harryproa@yahoogroups.com.au
> Date: Thursday, April 1, 2010, 1:06 AM
>
>
>  
>
>
>
> G'day,
>
> No other harrys. There is an 18m in Melbourne, Aus built from flat panels, should be in the water round Xmas.
>
> The rounded hulls can not be built using flat panels, at least not without some cutting and shutting. The infusers have just build a 7m x 3m panel curved in both directions, which has some potential but at the moment, those who want the complex curves, there are easier methods.
>
> The Norwegian boat is progressing. We are discussing a solid wing for the rig.
>
> regards,
>
> rob
>
> --- In harryproa@yahoogrou ps.com.au, George Kuck <chesapeake410@ ...> wrote:
> >
> > Hello Robert,
> > What size Harryproa are you building ?
> >
> > Are there any 12 M Harryproas currently under construction ? Or any others using foam core (other than Rob's Solitary)?
> >  
> > I am wandering how the 12 Harryproa can be constructed using foam core and maintaining the rounded hulls. 
> >  
> > From looking ar the web sight it looks like most have been build with wood core.  The only foam core ones I see are the two 20 M ones in Norway.  What has become of them ? I understand one of the brothers died.  Did this put a stop the the project or will one of them be finished.  It would realy be a shame if all that work were wasted and the hulls trashed.
> >  
> > Happy sailing
> > George Kuck
> > Chestertown, Md.
> >  
> >  
> > --- On Wed, 3/31/10, robert <cateran1949@ ...> wrote:
> >
> >
> > From: robert <cateran1949@ ...>
> > Subject: [harryproa] Re: off axis between tow
> > To: harryproa@yahoogrou ps.com.au
> > Date: Wednesday, March 31, 2010, 1:46 AM
> >
> >
> >  
> >
> >
> >
> > Thanks Doug,
> > Most appreciative of the offer. ,
> > This is the Harry I am starting. It is not unusual for people to say I need help, but for the moment I am only doing an hour here and there and very occasionally a full day: I am just pottering. Later on when I start trying to do 9.2x2.4 panels and get fair dinkum full time I would certainly appreciate a hand.
> > Presently I am trying to do all the fiddly jobs that don't take up much space like rudders, crossbeams, hatches while I am stuck in Canberra waiting for the Admiral to retire so we can move down the coast. Later on when I move back down the coast I will have more room and easy access to the water.
> >
> > --- In harryproa@yahoogrou ps.com.au, Doug Haines <doha720@ > wrote:
> > >
> > > Is this the harry you are starting?
> > > Need any help?
> > >
> > > --- On Mon, 29/3/10, robert <cateran1949@ ...> wrote:
> > >
> > > From: robert <cateran1949@ ...>
> > > Subject: [harryproa] off axis between tow
> > > To: harryproa@yahoogrou ps.com.au
> > > Date: Monday, 29 March, 2010, 17:02
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >  
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > I am setting up for making my corner rods for the beams. I am working on 3mm between off axis layers. Is this about right. I am using 200g carbon as I will be using 680 carbon twill +/- 45 and tow at 90 for the web and want to match characteristics.
> > >
> > > The polycore has arrived and now to get it down to Canberra
> > >
> >
>

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