Hi Doug,
good job on the boat, thanks for the pictures.
I've put one of them on my blog. Hope you don't mind. If you do,
leave me a note.
And thanks for reporting on your expedition. I sincirely hope you
have that disposable camera with you, or any camera for that matter.
Good luck and fair winds,
Peter
PS: Blog address: arpex.blogspot.
--- In harryproa@yahoogrou
>
> Harriette sails pretty good.
> Nice and light.
> Speeds off
> steers OK.
> No chance for much test today, try aagin later.
>
> Rob you able to come down to River when U get there - hopefully
tommorrow?
>
> Doug
> Mandurah
>
> --- On Sat, 24/1/09, Doug Haines <doha720@...
>
> From: Doug Haines <doha720@...
> Subject: Re: [harryproa] Re: Estimating weight, revisited
> To: harryproa@yahoogrou
> Date: Saturday, 24 January, 2009, 12:54 PM
>
>
>
>
>
>
>
>
>
>
>
> I'm Finding harriette easier such as the up and down mechanisms
finished today are really similar to sidecar and work fine.
> other stuff like netting and exxtension tillers are all similar -
though I still stuffed up the extensions by over doing the glass and
resorted to two broom stick handles instead!
>
> Doug
>
> --- On Fri, 23/1/09, arttuheinonen@ heinoset. net <arttuheinonen@
heinoset. net> wrote:
>
> From: arttuheinonen@ heinoset. net <arttuheinonen@ heinoset. net>
> Subject: Re: [harryproa] Re: Estimating weight, revisited
> To: harryproa@yahoogrou ps.com.au
> Date: Friday, 23 January, 2009, 6:11 PM
>
>
>
>
> Hi,
>
> Thanks for nice photos. Building something never built your self
before
> takes three fold more time you expected. Our boat also took three
times
> more money than expected,
>
> Regards,
>
> Arttu
>
> > just adding the extra resin in small taping, glueing hardware,
making
> little pieces, more taping and fillets and coves etc adds heaps
extra
> rein on top pf your hull surface area.
> > I am on my third 24L resin kit for harriette plus a little work
(fair
> bit really) on sidecar.
> > This is some of the reason that time costs blow out so much on
things
> in boats.
> >
> > Doug
> >
> > PS here's some more photos - someone add them to the photos
section please
> >
> > --- On Fri, 9/1/09, jjtctaylor <jtaylor412@
> >
> > From: jjtctaylor <jtaylor412@
> > Subject: [harryproa] Re: Estimating weight, revisited
> > To: harryproa@yahoogrou ps.com.au
> > Date: Friday, 9 January, 2009, 3:44 AM
> >
> >
> >
> >
> >
> >
> > Robert is right.... as you go up in size, your structure mass
rises
> > as well. Found a buckling issue on my lee hull, thus needed more
> > stringers and bulkheads. The rigidity of expando beams may become
an
> > problem and might have to beef up to avoid excessive flex. You
will
> > also find as the surface area of anything grows so does the
> > underlying support. Orrr you can take your risks.
> >
> > Mine will be similar size to Rare Bird so have a reasonable
> > baseline. But as you add the weight of tankage and systems those
too
> > will bring structural issues. Rare Bird is light on creature
> > comforts and there is a penalty to pay for niceties. With one-off
> > design not much opportunity to improve upon existing except to
> > design/fab under the best known engineering practices.
> >
> > JT
> >
> > --- In harryproa@yahoogrou ps.com.au, "Robert" <cateran1949@ ...>
wrote:
> > >
> > > There are a suprising amount of panels needed for interior
> > separation,
> > > such as bulkheads, storage areas, bouyancy compartments,
cupboards,
> > > shelving. Rare Bird was strip planked so would have to include
a bit
> > > of bog. Rare Bird also has a dinghy ramp. The crossbeams and
rudders
> > > need to be pretty substantial as do the reinforcing to transfer
the
> > > loads between them and the rig There is also the weight of
hatches.
> > > Rare Bird weight should be pretty close if you can keep the
bogging
> > > down to a minimum.Blind date is a fair bit lighter.
> > > Your calculations of area seem just a little more than an
extended
> > > Harry 15m/9m that I have been trying to design so we are making
> > > similar mistakes -- In harryproa@yahoogrou ps.com.au, "Gardner
> > Pomper"
> > > <gardner@> wrote:
> > > >
> > > > Hi,
> > > > I have been spending way too much time researching materials
> > online,
> > > but the
> > > > end result is that I am again confused on how to estimate the
> > weight
> > > of a 50
> > > > ft cruising harryproa. I have gone through and added up the
hull,
> > > bulkheads,
> > > > furniture, hardtop, cockpit, bunks, etc, etc and come up with
2100
> > > sq ft.
> > > > This does not include the rig, crossbeams or rudders, since I
> > don't
> > > know how
> > > > to calc that.
> > > >
> > > > Anyway, I then research the core material (pretty much all of
> > them are
> > > > 80Kg/m3), which translates to 0.3 lbs/sq ft for 2/4" (20mm)
core.
> > > Add in 2
> > > > layers of 18 oz/yd2 fiberglass (1 top and 1 bottom) and an
equal
> > > weight of
> > > > resin and I get 0.8 lbs/sq ft total. Add 20% for fillets,
bog,
> > etc,
> > > and it
> > > > comes out pretty much exactly 1 lb/sq ft.
> > > >
> > > > I add in my batteries, outboard engines, refrigeration, water
and
> > fuel
> > > > tanks, instrumentation, ground tackle, etc and get another
1500
> > lbs.
> > > >
> > > > With schooner rig, I would estimate each mast/sail/boom combo
at
> > > about 500
> > > > lbs, so that is 1000 for the rig.
> > > >
> > > > I am now up to 2100 lbs for structure + 1500 lbs equipment +
1000
> > > lbs rig =
> > > > 4600 pounds.. supposedly only missing the crossbeams and
rudders.
> > > >
> > > > I am happy with that. But then the urge to do a reality check
> > comes
> > > in and I
> > > > look at Rare Bird at 6,720 lbs, and it doesn't have a 10' x
12'
> > > bridgedeck.
> > > >
> > > > So, what am I doing wrong? At about 5000 lbs and 1000 sq ft
of
> > sail,
> > > this
> > > > should be a screamer, but if it is 10,000 lbs with the same
sail
> > > area, that
> > > > is a totally different boat!
> > > >
> > > > I would probably be safe by just taking Rare Bird and adding
a
> > couple
> > > > thousand pounds, but I actually want to be able to do this
stuff.
> > Help!
> > > >
> > > > Thanks,
> > > >
> > > > - Gardner Pomper
> > > > York, PA
> > > >
> > >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
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