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Reply | Forward Message #2740 of 6708 |
Re: Rare Bird Sailing

Hello Rod and folks,

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>
> >
> >
> >
>





Wed Aug 8, 2007 5:35 pm

tsstproa
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Message #2740 of 6708 |
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Sorry for the typo, I meant Rare Bird but typed Rare Earth. Is their any way to edit a message after it is posted ? I was able to delete it and resend a new...
George Kuck
chesapeake410
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Aug 8, 2007
3:47 am

Hello Rod and folks, Nice video, impressive. But;) Looks like 1 metre swell possible in 15 knot winds for a boat speed of 15knots . Marshall Island Walap will...
Todd
tsstproa
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Aug 8, 2007
5:39 pm

... as ... so ... is ... need ... breeze, ... a "cruiser" ... with ... Panel ... <http://us.rd.yahoo.com/evt=48517/*http://surveylink.yahoo.com/gmrs/y...
Todd
tsstproa
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Aug 8, 2007
5:51 pm

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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