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Author Topic:   test foam for water
bcgroup posted 04-07-2002 09:05 PM ET (US)   Profile for bcgroup   Send Email to bcgroup  
As a new owner of an old 16' Whaler (1969) I have been reading alot about peoples concerns regarding how much water is absorbed by the foam between the hulls and what the implications are. I have come up with a simple test of the foam to see how much flotation it has after all these years. Drill a hole in the cockpit and remove a small sample of foam - a teaspoon is plenty. Assuming that fresh foam will sit on top of the water - take this old foam and place it in a glass of water. If it sits on top it is in excellent shape. If it sits half way it has lost half of its bouyancy. If it sinks - see the chain saw whaler thread.
Any thoughts on this "test" ? By the way my test showed that it sat at about 50% bouyancy. I am somewhat encouraged by this what are your collective thoughts ?
DCPeters posted 04-07-2002 10:38 PM ET (US)     Profile for DCPeters  Send Email to DCPeters     
I'd guess that foam failure is localized, not the same all around the boat.
mudpuppy posted 04-07-2002 10:48 PM ET (US)     Profile for mudpuppy  Send Email to mudpuppy     
Do we really know that new foam sits on top of the water? Might new foam actually be dense enough to displace at least some water?
mudpuppy posted 04-07-2002 10:48 PM ET (US)     Profile for mudpuppy  Send Email to mudpuppy     
Do we really know that new foam sits on top of the water? Might new foam actually be dense enough to displace at least some water?
JohnAz posted 04-08-2002 10:00 AM ET (US)     Profile for JohnAz  Send Email to JohnAz     
2 pound, foam weight 2# per cubic ft, water weighs 80# per cubic ft, so dry foam would only sink in water 1/40 th of its displacment

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