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Old 01 June 2006, 16:21   #1
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what are they

what are Longitudinal Divinycell stiffening/bulkheads, regards to material etc

ta gt
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Old 02 June 2006, 18:54   #2
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Old 03 June 2006, 00:41   #3
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Longitudinal is along the length of the boat.
Divinycell is a trade name for a fairly tough closed cell foam which will supposedly not soak up water, when used as stiffening it is glassed over and onto the hull, Amount and type of glass over the foam has more impact on strength than the core itself. Why?
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Old 03 June 2006, 11:04   #4
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I think the core is really just to give the shape - bit like a hollow girder I suppose.
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Old 04 June 2006, 17:43   #5
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thanks kitten!! so whats the advantages over ply longitudinals... it was in a pascoe boat so i presume weight etc!!
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Old 05 June 2006, 06:45   #6
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Ply isn't really the right stuff for longitudinals. It's only half the thickness it looks. 'Douglas Fir' is the 'real' stuff.

Pascoe has always used divinicel, and he uses the harder stuff which supposedly adds some strength, though as he has joins in it (the core), I tend think that's utter bollocks. As Kevin says, the laminate schedule 'over' the former, is far more relevant that the bit of old foam itself.

Douglas fir is hardly heavy, so the real advantage of foam would only really be, that it doesn't rot. But if it aint adding any strength anyway...........go figure
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