"Eric Kent" <Erickent@giveme10.Com> wrote in message
news:nm9au2tju1hi34vbam7ujv77amaqc1en46@4ax.com...
.....[color=blue]
>
> I've seen 2 liter bottles pressurized to failure (not pressure gauge
> used) and they seem pretty strong. However I have no idea of the
> strength needed, nor any idea of what a fermenting beverage could
> generate.
>
> Thanks
>
> Eric
>[/color]




[url]http://www.prairiemoon.biz/sosisebofa.html[/url]
plastic soda bottles have a design rating of 200 psi.

1 atmosphere is 14.7 psi

[url]http://hypertextbook.com/facts/2000/SeemaMeraj.shtml[/url]
soda is around 55 psi (55/14.7 = 3.74 atmospheres)


[url]http://www.angelfire.com/ks2/beer/homekeg.html[/url]
[url]http://www.kegs.com/faqs2.html[/url]
beer is around 1 atmosphere (14.7psi)

If you make beer in plastic soda bottles you would be putting 14.7 psi in a
bottle designed for 200 psi. Obviously, soda bottles are over engineered
(200 psi rating to hold 55psi soda) so they don't break if banged around.