> On Tue, Jan 05, 1999 at 01:15:23AM -0500, JBlumhorst@aol.com wrote:
> > Yes, there is a pile of busted-up, mildewed stryofoam up under the v-
berth,
>
> > with bits of white stuff wandering all the way back to the port sink and
> > starboard cabinet. I plan to remove it in the spring when Toys-R-Us has
6
> > foot "pool noodles" of closed cell foam on sale again for $2 each
> > (approximately 1 cubic foot each) which will be the replacement foam.
> About
> > 32 cubic feet ought to do it (displacement = 2048 pounds of seawater). I
> plan
> > to attach the noodles as high up as I can along each side of the v-berth
> so
> > that the flotation up as high as practical. I'll also put a few noodles
> high
> Let's see -- the noodles I've seen are about 3 inches in diameter, so
> the volume is pi*r*r*h = 3.14*1.5*1.5*72 = 509 cubic inches, which is
> something less than a third of a cubic foot. (509/1728)*62.3 = 18.4
> pounds displacement per noodle. That's in fresh water. So 2000
> pounds of flotation would require about 100 noodles, if they are
> indeed three inches in diameter. If they are 4 inches in diameter,
> you would need about 60 noodles, if I did all this arithmetic
> correctly.
Hmmm, sixty would be a bit bulky and hard to manage.... maybe I should look
for block foam somewhere and carve it to fit the shape of the hull. Too bad,
because even if they're only 1/3 of a cubic foot, you can't beat the price for
closed cell foam ($6/cu.ft.)! The marine foam is about $40/cu. foot.
I think the ones I used last spring for a dinghy I rebuilt had a larger
diameter than 3". I put 6 or 8 of them in a dinghy that I rebuilt last
spring. They were a little smaller than the 6" inspection hatch I installed,
so I'd guess they were about 5" diameter.
My husband bought them at Walmart, or Costco, or Toys-R-Us, They had HUGE bins
of them, all different sizes and shapes for $2 each.
Judy Blumhorst, DC
WWP-19 #266 "Red Wing"
SF Bay, CA