Subject: Re: [harryproa] polycore ?s
From: "Rob Denney" <proa@iinet.net.au>
Date: 4/6/2007, 8:26 AM
To:
Reply-to:
harryproa@yahoogroups.com.au

G'day,
 
For most applications a straight swap is possible.  Will not be a problem in an Elementarry.  Hopefully
not a p[problem in the Transpac boat either as it is all Polycore.   I have a sample in the garage,
you are welcome to bash and bend it.   Weighs the same as foam.  Your alterations sound like a good idea.
 
Wing masts will tend to align to the wind.  Most of them have a handle (spanner) near the deck with a line
 from it to the boom so the relative positions can be controlled. 
 
We are sailing on the river on Sunday (family obligations), if all goes well will be in Mandurah on Monday. 
I will give you a call when I know what is happening.  When are you coming up to Maylands?
 
Regards,
 
Rob
----- Original Message -----
From: Doug Haines
To: harryproa@yahoogroups.com.au
Sent: Friday, April 06, 2007 8:56 AM
Subject: Re: [harryproa] polycore ?s

Rob,


I asked you this before, but I'm not too sure about it?

Can you substitute polycore for foam Eg. in the beams, and the bridge deck, bulkheads, rudder boxes.
Is it strong enoughin bending?
So therefore I would want to order a lot more if it is so.

I've decided to pull into Maylands again to do new single mast easy-rig, as per plans sliding triangular beams, deck and under storage, and a new design for the rudders further back off a secondary curved beam with 360deg turning, swing up and little wheel steering.

What's the comparisons between foam and polycore for all these applications, it would be weaker and heavier than foam I think. The savings though would make using foam impractical for probably a tiny saving in weight.

I estimate that I may save at least 50kg after all these lighter weight improvements. A
Also fairing properly the hull surfaces for showing around.

I went out yesterday in a little sw'ly but realise that my wings are sliding around square to the wind, I think from the pressure from the sails and so need to glue a block in to stop it from turning past about 35 degreees. Otherwise the sail actualy looks nice, though top batten sneed more bend, Felt extra lift.
Got my mobile? 0406309440, in case coming down.

Doug
Rob Denney <proa@iinet.net.au> wrote:

G'day,
 
Trade price list, which is what i can sell it for, plus freight from Queensland.
 
Polypropylene Honeycomb Core          Sheet Size    1200 x 2400.
Honeycomb Core size  8mm or 12mm.                      
PP8S-80T45F (standard) Trade                                     R.R.P.
  4mm              $      75.00       $                        86.25
  6mm              $      67.00       $                       75.05                                      
10mm              $      80.00       $                        89.60
12mm              $                        91.00               $                        101.95                                    
15mm              $                        99.00               $                             110.90                                    
19mm              $                      110.00             $                        123.20
25mm              $                      122.00             $                        136.65
30mm              $                      135.00             $                        151.20
50mm              $                       175.00             $                        196.00
Note: 10mm is still T30.
PP8H-80T45F  ( High Strength )
  6mm              $                          73.70               $                       84.75              
10mm               $                         88.00               $                       101.20
12mm              $                          94.20               $       110.80
15mm              $                       107.80             $                      126.80
19mm              $     115.20      $                      135.50
25mm              $     144.45      $       169.95
30mm              $     172.80      $        203.25
40mm              $     206.75       $        243.25
PP8F-80T45F ( Flexible )
  4mm                        $       48.70                        $         51.30
  6mm                        $       60.90                        $         64.10
10mm                        $       67.95                        $         71.55
12mm            &bsp;           $       78.15                        $         82.25
15mm                        $       90.30                        $         95.00
19mm                        $ &nbs;     98.45                        $       103.60
25mm                        $     123.80                        $       130.30
30mm                        $     148.20              &nbs;         $       155.95
40mm                        $     177.55                        $       186.90
PP8S-80T60F         urrently no stock!    (11/01/07)                                                    
 
  6mm                        $      70.00                        $                       78.05                                      
10mm                        $      83.00                        $                       92.60
12mm                        $                        94.00                        $                        104.95                                    
15mm                        $                        102.00                        $                             113.90                                    
19mm                        $                        113.00                        $                        126.20
25mm                        $                        125.00                        $                        139.65
30mm                        $nbsp;                       138.00                        $                        154.20
50mm                        $                          178.00                        $                        199.00
Note:       If you have a specific thickness or skin please contact us, special orders will take 8 to 10 weeks for delivery.

Note: The PP is for Polypropylene, the Number after is the core size, H designates high strength, F is  flexible, S is standard,  the 80 is for 80KGs per cubic metre, T is for tissue the number following the T is the weight of tissue in grams per square metre, F at the end  designates a film under the tissue to reduce resin intrusion into the core.

11 Calendula Crt  Regency Downs; Queensland. 4341.

Phone:  07 54658286   Fax: 07 54658013.  Mobile: 0428 304337

----- Original Message -----
Sent: Thursday, March 29, 2007 7:49 AM
Subject: Re: [harryproa] polycore ?s

G'Day Rob,

I'll want the minimum thickness, for the mast male mould which needs to bend around and not be too strong. 2 sheets.
Plus one sheet of 8-12mm thickness, for later on when the boat is out again for the under bridge-deck storage material.
Is that coming from East?

Thanks
Doug

Rob Denney <proa@iinet.net.au> wrote:
G'day,
 
Happy to get it for you.  What thicness, and how much?
 
The original concept of the Transpac boat changed as we decided to do some of the Aus races (Hobart and Bris Gladstone would be great, we will see how things progress) with crew before we go, and for Katy and I to cruise back from Hawaii.   We also wanted to see how the ww hulls would look if they were built as kits.  So the ww hull I built has been replaced with a Harrigami ww hull which will be built as a foam cored Duflex kit from ATL.    Not sure what I will do with the carbon/Polycore ww hull, but will probably stick it on when I get the boat over here. 
 
Regards,

Rob
 
From: Doug Haines
Sent: Wednesday, March 28, 2007 4:54 PM
Subject: Re: [harryproa] polycore ?s

Hi Rob,

I was in Boating Hardware today asking about polycore. Still getting back to me on how much. Would you want to get it for me?
I thought you said the other day that you were going for foam /glass panels - what hull was that?

Thanks
Doug

Rob Denney <proa@iinet.net.au> wrote:
G'day,
Transpac ww hull is 8mm thick.  There is a backing and a barrier on both sides of the honeycomb.  All three are very well bonded.    Vac bagging is unnecessary, unlike with foam, and core/laminate bond is extremely good.  It is also about half the price of foam for same weight.  see http://www.polycore-australia.com.au/ 
 
What thickness for what?
 
regards,

Rob
----- Original Message -----
From: Todd
Sent: Wednesday, Mach 28, 2007 5:43 AM
Subject: [harryproa] polycore ?s

Hello Rob ,
Seen the work done on the pod for your transpac boat. Nice work . What
thinkness of polycore are you useing? Does it have a backing or
barrier on each of the honeycome?Or are they already glassed? What
thickness do you recommand?

Todd


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