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Reply | Forward Message #3536 of 6642 |
Re: [harryproa] Teaser plans

Yes, in my simpleminded way, I had the idea that you could just lay 3 4x8 foam sheets lengthwise and bend them up to form a 24' lw hull with 6" draft and 1.5' freeboard. Then take 3 4x8 sheets laid width wise and end up with a 12' ww hull with a 12" draft and 2.5' freeboard. If you really can just fold them up, most of the fiberglass work should be done. Not realistic?

- Gardner

On Mon, Jun 2, 2008 at 8:03 AM, Rob Denney <harryproa@...> wrote:

G'day,

I have though about this on and off for years. Always seemed too
complicated. However, I've just been for a long walk along the beach
(best non floating spot for thinking) and reckon it could actually be
quite easy. Should have a sketch or three tomorrow.

Mostly makes sense. Rudders are a bit tricky, too hard to insert in
the lee hull while afloat but could be done fairly simply on the
beams. Not going to be very fast with 300 pounds on board ;-), but
would let you enjoy the building and see how a proa works.

regards,

Rob




Mon Jun 2, 2008 3:09 pm

gardnerpomper
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Message #3536 of 6642 |
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G'day, I have though about this on and off for years. Always seemed too complicated. However, I've just been for a long walk along the beach (best non...
Rob Denney
proaharry
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Jun 2, 2008
12:03 pm

Yes, in my simpleminded way, I had the idea that you could just lay 3 4x8 foam sheets lengthwise and bend them up to form a 24' lw hull with 6" draft and 1.5'...
Gardner Pomper
gardnerpomper
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Jun 2, 2008
3:09 pm

Oops, I actually have a spreadsheet that calculates this for me, so I should put the numbers from there (all assuming a prismatic coeff of 0.77): waterline ...
Gardner Pomper
gardnerpomper
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Jun 2, 2008
3:44 pm

G'day, Drawings and description of a harry for learner builders and sailors is in the files under harry for beginners. Gardner, I appreciate that this is not...
Rob Denney
proaharry
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Jun 3, 2008
2:28 pm

Hi, Excellent! I am thrilled! Are you ready for me to send you money (extended version for 300lb crew)? In terms of the rudders, I am not going to sail this...
Gardner Pomper
gardnerpomper
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Jun 3, 2008
5:25 pm

In he USA -- look into NidaCore http://www.nida-core.com/english/ ... recalled you ... thoughts...
cruising.sailor
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Jun 3, 2008
8:03 pm

-To reduce time and mess it is possible to get polycore to supply preglassed panels in 20'lengths at a reasonable price. I am not sure how these lengths would...
Robert
cateran1949
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Jun 3, 2008
11:59 pm

Robert, Do you have a url for where to get the pre-glassed polycore panels? Is polycore the name of a company or a product? Who makes it? Those 20' panels...
gardnerpomper
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Aug 8, 2008
6:05 pm

Gardner, In the USA Google "NidaCore" - it seems the equivalent of the Australian Polycore. They do sell pre-skinned panels - just don't remember the details...
cruising.sailor
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Aug 8, 2008
8:02 pm

Hi, Thanks. I looked them up. I guess I better learn how to do this vacuum resin infusion thing if I want to use foam sandwich construction. At $175/sheet for...
Gardner Pomper
gardnerpomper
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Aug 8, 2008
8:23 pm

Hello, You can get corecell much cheaper than $175.   ...
George Kuck
chesapeake410
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Aug 8, 2008
11:36 pm

Is that the prelaminated stuff? or just the core material, which you then need to laminate yourself? - Gardner...
Gardner Pomper
gardnerpomper
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Aug 8, 2008
11:39 pm

It is the core that you would have to laminate by hand or use vacume resin infussion or vacume bagging.   George ... From: Gardner Pomper...
George Kuck
chesapeake410
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Aug 8, 2008
11:47 pm

Contact Nida core ,they have a sample pack with there products that they can send you for free.   http://www.nida-core.com/english/   George ... From:...
George Kuck
chesapeake410
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Aug 8, 2008
11:51 pm

--Polycore is the name of the company. It is an Australian comapany that imports from China. I am not sure where they do the skinning of the sheets.Google...
Robert
cateran1949
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Aug 9, 2008
1:14 pm

G'day, ... Paypal me the money and I will extend it. ... Maybe, but I think you will be missing out on a lot of fun (and expereince) if you don't fly the hull...
Rob Denney
proaharry
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Jun 4, 2008
4:25 am

-Lovely idea Not sure how the rudders kick up. Possibly a hollow shaft with the line going through it. I was thinking the windsurfer mast needs to be ...
Robert
cateran1949
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Jun 4, 2008
12:48 am

G'day, A horizontal pin solidly glassed to the shafts. The lower shaft has a U section extension which is locked (tied with something breakable) onto the...
Rob Denney
proaharry
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Jun 4, 2008
4:28 am

You have the difficulty of getting it off the beach with the rudder down or getting the rudder down when you are in deeper water. You would have to have fairly...
Robert
cateran1949
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Jun 4, 2008
8:00 am

G'day, It will steer while up, and can be lowered without getting your hand wet. The velcro is a great idea, will use it. regards, rob...
Rob Denney
proaharry
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Jun 4, 2008
11:27 am

Hi, I copied part of your reply out of the "First Boat Tradeoffs" thread, as to not muddy the contents of that thread. I am ok to wait a while on the plans. I...
Gardner Pomper
gardnerpomper
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Jun 5, 2008
1:03 pm

G'day, Infusion epoxy is available, check with the Gougeons or System Three. I was president of System Three Australia for a while. Huge company,staff ...
Rob Denney
proaharry
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Jun 5, 2008
1:22 pm

Ok, I am going to (hopefully) pick up the windsurfer I emailed you about this weekend. Is there a minimum size I should not go below? I can ask them how big...
Gardner Pomper
gardnerpomper
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Jun 5, 2008
6:18 pm

G'day, Good stuff. If you don't want the sail, or decide not to buy them, could you see if you can pick up two of them for me, please. I will rely on your ...
Rob Denney
proaharry
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Jun 6, 2008
2:11 am

Le 06/06/2008 04:11, Rob Denney inscrivait : [..] ... I think this should be "misaine" in French word. So a cat boat is something like a "misainier" too. ...
Guy Capra
alomphega
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Jun 6, 2008
9:10 am

About windsurf sails. This is not to rain on anyone's parade; However there is an issue with larger windsurf sail sizes: Windsurf sails larger than 6.5 meters...
Hajo Smulders
hilomania
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Jun 6, 2008
1:18 pm

I really wanted to ask again about the minimum size of sails I should deal with. I am seeing numbers like 12sqm, which is about 120 sq ft, right? The rig in...
Gardner Pomper
gardnerpomper
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Jun 6, 2008
2:38 pm

G'day, I have 11 sq m on Elementarry and I weigh 200 lbs. It gets along ok, but doesn't fly a hull until near enough 20 knots breeze, which we get regularly ...
Rob Denney
proaharry
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Jun 6, 2008
3:28 pm

I was given a couple of sails and they figure out to be 45 sq ft. ... From: Gardner Pomper <gardner@...> To: harryproa@... Sent: Fri,...
vectorges@...
saab4991
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Jun 6, 2008
4:15 pm

Your percentage of the weight goes up as the boat gets smaller. I'm not sure there is a dinghy version of any multihull? ... From: gardnerpomper...
Doug Haines
doha720
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Jun 3, 2008
8:39 am
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