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Hull construction #24623
09/27/03 06:58 AM
09/27/03 06:58 AM
Joined: Aug 2002
Posts: 545
Brighton, UK
grob Offline OP
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grob  Offline OP
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Joined: Aug 2002
Posts: 545
Brighton, UK
Does anyone know how modern catamaran hulls are constructed.

I assume they are made as two halves, but how are they joined together to get the seamless construction. I guess I am after some detail on the joint design and clamping process.

Gareth

-- Have You Seen This? --
Re: Hull construction [Re: grob] #24624
09/28/03 03:14 AM
09/28/03 03:14 AM
Joined: Apr 2002
Posts: 170
Australia (Queensland)
Berthos Offline
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Berthos  Offline
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Joined: Apr 2002
Posts: 170
Australia (Queensland)
This from Australian High Performance Catamarans website:
http://www.ahpc.com.au

>>>


We purchased a plug from Peter, however it was not to what we wanted so we made these changes:

2 part mold, seam down the centre of the hull

Beam moldings set up with captive nuts, and fairing on rear beam.

Additional fairing of the whole plug.

Construction remains similar to Egner’s version, being a hollow shell with just 2 frames. The joins at the deck and keel are full strength joins. A new joining technique had to be developed to achieve this in the closed mold, and we are very happy with the results.

A distinction from the European Flyer is that ours has the seam hidden under the non slip so the boat has that final finishing touch. <<<

Not the whole story of course but it gives some clues.

Below are some photos from the same place:

Flyer A-class in mold.
[Linked Image]

Auscat A-class in mold.
[Linked Image]

Finished Product (Flyer A-class)
[Linked Image]

Finished Product (Flyer A-Class)

[Linked Image]

Rob.

Re: Hull construction [Re: Berthos] #24625
09/29/03 04:21 PM
09/29/03 04:21 PM
Joined: Apr 2002
Posts: 695
Ft. Pierce, Fl. USA
Seeker Offline
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Seeker  Offline
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Posts: 695
Ft. Pierce, Fl. USA
Yea but...how is the flat center flange actually made when glassing up the half hull in the female mould? It is not obvious from the picture...


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