I have a friend that designs plastic bottles for a living. He says the
bottles are proof tested to three atmospheres pressure. I don't think
you could develop anywhere near that with a temp change.

Using my old thermodynamics formulas, and it's been a
while since I did so I could be wrong, but I seem to remember:
PV=nRT, and for these purposes let's throw out V, R, and n
since they don't vary a lot if at all.

So P is proportional to T, and when measuring T you have to use
absolute temp (-273 Celsius IIRC). So assume a start temp
of 32 F or 0 C (273 absolute) and a max temp of 100 F or38 C
(311 absolute), and thus a pressure differential of 311/273
or 1.14. So sorry, it's not enough to make a loud noise, just
the small crackly ones.

Matt

In article , Gregg Germain wrote:
Tailgunner wrote:


: Gregg Germain wrote:

: Tailgunner wrote:
:
: : I found a place that sells a gross at $20 ($0.07 each). Not much
better. I
: : thought about bottles (free). But the deck would have to be removed
to install
: : them. Next year I am thinking of replacing the deck so maybe. They
are
: : certainly not flammable even with the caps epoxied on.
:
: One has to wonder what happens to the bottles if you put them in
: during a chilly spring day, and then the seasons change and it's a 95
: degree Summer day.
:
: Or vice versa....if you put them in on a hot day, what happens in
: September or October. Do the bottles crush some? Does that imact
: flotation?