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I don't think any large-scale production boats use Epoxy. My bet is that
since potters are built to be cheap, its gotta be polyester.
Have any of you EVER had blisters? It might just not be a problem on
potters, for whatever reason.
-----Original Message-----
From: Rye Gewalt [mailto:ryeg@vais.net]
Sent: Friday, January 15, 1999 3:13 PM
To: wwpotter@tscnet.com
Subject: Polyester Hulls and freezing bilges
Judy B. Wrote:
The Gougeon Bros, manufacturers of the West Epoxy System, state
....Virtually ALL boats are constructed of polyester-resin fiberglass
laminate, not epoxy.
I never gave this much thought because of a bias I got from reading all
of the literature from the Epoxy vendors and really thought that most of the
boats were build with Epoxy. Maybe they are all polyester. (perhaps that
were all the leisure suits went from the '70s). Is anybody sure what IM
uses?
On the effects of standing water.... I think that standing water in the
bilge would be a real problem in areas where there is a freeze thaw cycle
even in small amounts. With the mold release angles in the boat it probably
isn't a problem in areas like the smooth cockpit, but down below where the
ice can get hold of the rough surfaces of the inner hull I would expect some
damage. Probably both at the macro level where the whole structure is
stressed and at the micro level where the ice gets into the nooks and
crannies and loosens things up. One would hope that the plastic properties
of fiberglass would help -- but Ice does some amazing things.
Of course when it's in a glass with some spirits it OK.....
Regards
Rye Gewalt
Springfield VA
90 HMS 18 with short rig
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The Gougeon Bros, manufacturers of the West Epoxy System, = state=20 ....Virtually ALL boats are constructed of polyester-resin = fiberglass=20 laminate, not epoxy.=20
I never gave this much thought because of a bias I got from = reading=20 all of the literature from the Epoxy vendors and really thought that = most of=20 the boats were build with Epoxy. Maybe they are all = polyester. =20 (perhaps that were all the leisure suits went from the=20 '70s). Is anybody sure what IM uses?=20
On the effects of standing water.... I think that = standing=20 water in the bilge would be a real problem in areas where there is a = freeze=20 thaw cycle even in small amounts. With the mold release angles = in the=20 boat it probably isn't a problem in areas like the smooth cockpit, = but down=20 below where the ice can get hold of the rough surfaces of the inner = hull I=20 would expect some damage. Probably both at the macro level = where the=20 whole structure is stressed and at the micro level where the ice = gets into=20 the nooks and crannies and loosens things up. One would hope = that the=20 plastic properties of fiberglass would help -- but Ice does some = amazing=20 things.=20
Of course when it's in a glass with some spirits it=20 OK.....=20
Regards
Rye Gewalt
Springfield =
VA=20
90 HMS 18 with short rig
=20