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Plane(ing) Proa   Message List  
Reply | Forward Message #1366 of 6619 |
Re: [harryproa] Plane(ing) Proa

Sailing in my case.  Tried a beam mounted rudder today.  Steers the boat very well, but a few details still to sort.  Max speed 12 knots in 10 knots of breeze so I am slowly getting the bugs out.  Went past an International 14 sailing higher and faster which was very satisfying.
 
I tried planing hulls on U (see www.harryproa.com) and they did not work.  The boat tended to tip forward on the rocker rather than get up and plane.  The narrow waterplane did not help either.
 
Rather than having the windward hull plane, you would be better shifting weight so it flies.  In theory a Harry will beat any of the F boats, asssuming the standard of gear and crew is the same. 
 
Spitfire is still down the club as far as I know.  Contact Brett at Windrush catamarans to make an offer, or I can if you are serious..  All the bits are there, and the rumour is that Brett, who built it, now owns it.  It reached very quickly (30+ knots by some reports) but was never raced.
 
regards,
 
Rob
----- Original Message -----
From: jocroome
Sent: Friday, November 25, 2005 12:02 AM
Subject: [harryproa] Plane(ing) Proa

Hi All,

BacK after a while. See the list is somewhat quiet. Must be all building or sailing I guess. I
see Farrier is finally going to make the 22 footer availablle, with 4 (maybe a bit tight)
berths. I was thinking, one of the reasons the trimaran design is so fast is because the
middle hull planes, thus reducing the wetted area. I wonder, is it possible to get a HP ww
(or both) hull to plane? I would really like an HP that makes a F-boat look slow, or
marginally slow on a wetted area comparison when going fast. Still dreaming of a no sail,
dry, very fast, unequal length (twin float) wind driven boat. What's the story with Spitfire?
Is it still sailable, for sale, and what about the first owner? Is he/she contactable, was it a
dog or what? Love to know (drooling).

Happy building, sailing, dreaming...

If it's not a Proa, it's probrably sloa. (thanks Chip for the spelling lesson, won't do it again)
Can't spell in the Southern drawwwwwwl, sorry.

RC





Fri Nov 25, 2005 3:21 pm

proaharry
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Message #1366 of 6619 |
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Hi All, BacK after a while. See the list is somewhat quiet. Must be all building or sailing I guess. I see Farrier is finally going to make the 22 footer...
jocroome
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Nov 24, 2005
4:05 pm

Sailing in my case. Tried a beam mounted rudder today. Steers the boat very well, but a few details still to sort. Max speed 12 knots in 10 knots of breeze...
Rob Denney
proaharry
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Nov 25, 2005
3:25 pm

ed to design a foil suitable for getting the ww hull up on the plane. I think it can be done but becomes pretyy mechanically complex as you have to have means...
Robert
cateran1949
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Nov 27, 2005
11:42 pm

... boat very well, but a few details still to sort. Max speed 12 knots in 10 knots of breeze so I am slowly getting the bugs out. Went past an International...
Robert
cateran1949
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Nov 28, 2005
12:00 am

I have been told a few times by learned authorities that schooner rigs don't point well :-) Yesterday it was a Foundation 36 (well equipped quick keel boat...
Rob Denney
proaharry
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Nov 28, 2005
1:04 am

If using polyprop honeycomb, the vertical strip as used by Farrierlooks pretty good, possibly even vacuuming into a female mould if iit can handle...
Robert
cateran1949
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Nov 28, 2005
2:35 am

... Yes, shotover II didn't (doesn't) 'point' well. When Adrian Rogers sailed it I observed that he 'pointed' a bit lower than the boats around him. His VMG to...
nudd@...
paulnudd
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Nov 30, 2005
4:07 am

If there is enough wind to trapeze, just move your weight and fly the hull. No foils required. regards, rob ... From: Robert To: harryproa@... ...
Rob Denney
proaharry
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Nov 28, 2005
1:07 am

... hull. No foils required. ... After exploring how to stick a foil on, that is clearly the better option. Still, I had to do the mental exploration because...
Robert
cateran1949
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Nov 28, 2005
1:50 am

If using polyprop honeycomb, the vertical strip as used by Farrierlooks pretty good, Yes, but glassing the bottom and topsides in one side full length on a...
Rob Denney
proaharry
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Nov 28, 2005
3:11 am

Checked out prices and engineering details of polycore. 2.6MPa compressive strength and 0.5MPa sheer seems pretty good value when 2/3 the price of Kiri strip...
Robert
cateran1949
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Dec 1, 2005
1:10 am

G'day, Spoke to Bob August at Polycore yesterday. He reckons vacuuming is no problem, resin into the core is minimal. I am not sure we (or anyone else) have...
Rob Denney
proaharry
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Dec 1, 2005
4:42 am

I was looking at the shape and reckon it could be accommodated by three conic sections without the revesse sheer and five conic sections with. The top could...
Robert
cateran1949
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Dec 4, 2005
10:57 am

The unknown question is how much will it compound so that flat shapes can be tortured into the required shapes and the effect of cutting darts to facilitate...
Rob Denney
proaharry
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Dec 4, 2005
2:28 pm

-I was wondering if the property of epoxy resin softening slightly if raised above its initial curing temperature could facilitate the torture. Have the...
Robert
cateran1949
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Dec 7, 2005
6:01 am

G'day, I have copied this to Bob August who can answer these questions. I made up a trial piece of 19mm with 400 double bias on one side the other day. Bent...
Rob Denney
proaharry
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Dec 7, 2005
1:51 pm

No prices on Arripiado (they keep getting paid for big cats, spec proas go on the backburner) or Elementarry (quite possibly going to be the best finished...
Rob Denney
proaharry
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Nov 28, 2005
3:45 am

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