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Harryproa #1 For Sale   Message List  
Reply | Forward Message #2745 of 6670 |
Re: Rare Bird Sailing

No I don't think a flared bow would be any better.It would be worse.
The boat doesn't look to be sailing flat. It looks to me to be
heeled 5 to 7 degrees maybe more in the video. To me the leeward
hull just seems to shallow at the ends. In the 1 metre swell the bow
is punch through on a few all most buried. The video shows pretty
sedate sea state and the boat looks all ready to be pushing its
limits with the leeward hull low in the water. Along with the
appendage attachments. Load of rudders horizontally and vertical in
proper trim but what about at speed, 20knots being pounded
vertically hour after hour. In and out wave after wave?

Good at 15 knot winds 15 knot boat speed but what at 20 to 25 knots
in lumper seas?

Todd

--- In harryproa@..., "Robert" <cateran1949@...>
wrote:
>
> The boat looks as though it is riding pretty flat to me . With 3m
> swell I am assuming the bow will simply punch into it and gently
rise
> without any violent hobby horsing. The flat ride should keep the
sails
> working better than with violent motion of a flared bow bouncing
off
> waves I can't think of any small boat that would not be pretty wet
in
> the same circumstances. The braces are designed to take the loads
of
> the rudders. Shock loads from the braces hitting the top of the
wave
> is nothing compared to loads from the rudders,
> Robert
> --- In harryproa@..., "Todd" <bitme1234@> wrote:
> >
> > --- In harryproa@..., "Todd" <bitme1234@> wrote:
> > >
> > > Hello Rob and folks, (sorry about that)
> > >
> > > Nice video, impressive. But;) Looks like 1 metre swell
possible in
> > > 15 knot winds for a boat speed of 15knots . Marshall Island
Walap
> > > will do that. What about 25 knot winds in 3 metre swell? Looks
as
> > > throught the bow is pretty close to the edge in 15 knots. As
far
> > as
> > > all out performance pushing the boat to the limits what is
known?
> > >
> > > What about the braces for the weather boards, how much abuse
will
> > > they handle being punched from underneath or swist from
changing
> > > angle of attacks in certain situations. The bottom brace seems
> > > really close to the water surface.
> > >
> > > Todd
> > >
> > > --- In harryproa@..., "Rob Denney" <harryproa@>
> > > wrote:
> > > >
> > > > G'day,
> > > >
> > > > My Harry did 15 in 15 with lousy sails, but not much
interior,
> > so
> > > probably
> > > > pretty similar. Blind Date will be faster than Rare Bird as
it
> > is
> > > lighter,
> > > > has less windage and a stiffer mast. Rare Bird's sails also
> > need
> > > some work,
> > > > it has not realised it's full potential yet.
> > > >
> > > > The only real difference in a Harry is whether you have the
> > > cockpit cover or
> > > > not. Bain has it and it works well. I prefer to feel the
> > breeze,
> > > so the
> > > > solo boat will have a pram type fold up cloth cover over
part of
> > > the cockpit
> > > > for keeping out of the rain and wind.
> > > >
> > > > regards,
> > > > Rob
> > > >
> > > >
> > > > On 8/8/07, George Kuck <chesapeake410@> wrote:
> > > > >
> > > > > How will the 12m (40') Harry (built with the KSS
method)
> > > performance
> > > > > compare to Rare Earth or Blind Date ? Will it have
> > a "cruiser"
> > > or "sport"
> > > > > version option or be a compromise between the two ?
> > > > >
> > > > > George Kuck
> > > > > Chestertown, MD
> > > > >
> > > > > *Robert <cateran1949@>* wrote:
> > > > >
> > > > > It is pretty impressive for such a comfortable boat. Even
> > with
> > > the
> > > > > extra weight it is still pretty light compared to most
> > > multihulls of
> > > > > similar length,
> > > > > \ Robert
> > > > >
> > > > > --- In harryproa@... <harryproa%
> > > 40yahoogroups.com.au>, Mike
> > > > > Crawford <jmichael@> wrote:
> > > > > >
> > > > > >
> > > > > > Fifteen knots in fifteen knots of wind? In Rare Bird?
Holy
> > > moly!
> > > > > >
> > > > > .
> > > > >
> > > > >
> > > > > ------------------------------
> > > > > Shape Yahoo! in your own image. Join our Network Research
> > Panel
> > > today!
> > >
> >
<http://us.rd.yahoo.com/evt=48517/*http://surveylink.yahoo.com/gmrs/y
> > > ahoo_panel_invite.asp?a=7>
> > > > >
> > > > >
> > > > >
> > > >
> > >
> >
>





Thu Aug 9, 2007 2:40 am

tsstproa
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Message #2745 of 6670 |
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The boat looks as though it is riding pretty flat to me . With 3m swell I am assuming the bow will simply punch into it and gently rise without any violent...
Robert
cateran1949
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Aug 9, 2007
1:25 am

No I don't think a flared bow would be any better.It would be worse. The boat doesn't look to be sailing flat. It looks to me to be heeled 5 to 7 degrees maybe...
Todd
tsstproa
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Aug 9, 2007
2:40 am

G'day, Don't be fooled by the reverse sheer and the spray washing over the bows. It is nowhere near it's limits, in fact, it has barely immersed the bow past ...
Rob Denney
proaharry
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Aug 9, 2007
3:58 am

a rough calculation gives less than half a degree pitch. (working on 2 inches up at the stern and 2 inches down at the bow gives 10cm over 15m or 1 in 150) At...
Robert
cateran1949
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Aug 9, 2007
8:06 am

G'day, Agree that half a degree of pitch is extraordinary at 15 knots for a double ended boat with central rig. I'm not sure of the relationship between speed...
Rob Denney
proaharry
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Aug 9, 2007
1:48 pm

My last post I intended Robert not Mark on the marriage thng sorry. Pitching come on its a 50' long right with Pc of .8 buoyancy almost out to the ends from...
Todd
tsstproa
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Aug 9, 2007
6:18 pm

I think it is square of the velocity Rob Denney <harryproa@...> wrote: G'day, Agree that half a degree of pitch is extraordinary at 15 knots...
Peter MacLean
maccarr06
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Aug 16, 2007
10:16 pm

Sure the reverse sheer is something to get used to. .8 pc is pretty great. Looks to me the bow gets depressed a few inches from the top towards the end of the...
Todd
tsstproa
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Aug 9, 2007
6:04 pm

... Obviously the rudder set up is draggier than if it was in the hull. However, the advantages of no holes in the hull, kicking up, lifting up, seeing when...
Rob Denney
proaharry
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Aug 10, 2007
12:07 pm

Hey Rob , I hear you on the holes in hull and keeping it as simple as possible. The drag wouldn't bother me to much but just the thought of having that lower...
Todd
tsstproa
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Aug 10, 2007
6:51 pm

G'Day, just wanted to share some experiences with harry sailors. Up here in Singapore, lovely and humid and warm. Been out on frinds runabout motor boat...
Doug Haines
doha720
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Aug 11, 2007
9:47 am

Whats the windward hull load capacity. In the video is Rare Bird at cruising trim or light? How much more powerfull could it get before compromise? Todd ... I...
Todd
tsstproa
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Aug 11, 2007
6:50 pm

G'day, Mark and his son had been living and working on it for 5 days, so food and tools and usual gear would have been onboard. Near enough cruising trim. How...
Rob Denney
proaharry
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Aug 12, 2007
5:33 am

The boat sails remarkable flat with very little pitch. I expected her to dig her bow in more but the absence of rocker really does make a boat pitch stable....
mark@...
markstephens...
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Aug 9, 2007
10:53 am

-I have been in boats at 25 knots in lumpy seas. I don't think I would have a marriage left if I regarded this as normal part of cruising. It is amazing how...
Robert
cateran1949
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Aug 9, 2007
1:16 pm

Hi Todd, Is there any reason why it should be worse than a stayed mast in these circumstances? I think the worst would be a stayed mast with some slack in the...
Peter Southwood
pbsouthwood
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Aug 10, 2007
5:53 pm

Hi Peter, Yeah the whip effect of mast in high wind and wave. Could it be self perpetuated to self destruction? ... these circumstances? ... rigging which...
Todd
tsstproa
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Aug 10, 2007
6:07 pm

I would think it would only be a problem if the natural frequency of the mast and the waves is the same, This is very unlikely as the mast would have a high...
Peter Southwood
pbsouthwood
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Aug 11, 2007
12:00 am
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