[pct-l] Go-Lite

[chelin at teleport.com (Sharon & Chuck Chelin)]

Good evening, Goforth,

You are absolutely right:  Measuring volume can be a tricky thing.  I am
reminded of that every morning on the trail when I pack up for the day.
Regardless of whether it is the first day out or the last day before
resupply, the pack seems to be the same size.  I don't stuff-sack my
sleeping robe/bag, or my tarp, I just cram them into the pack.  As the food
on top is burned off, and as the water bladder is depleted, the soft stuff
underneath just fluffs out to entirely fill the pack.  Sometimes the collar
rolls down tighter later in the segment, but the pack looks the same even
though it is much lighter.

Steel-Eye

----- Original Message ----- 
From: "Joanne Lennox" <goforth@cnw.com>
To: "Sharon & Chuck Chelin" <chelin@teleport.com>; <dmd@email.arizona.edu>;
<pct-l@mailman.backcountry.net>
Sent: Saturday, July 31, 2004 4:18 PM
Subject: Re: [pct-l] Go-Lite


> Be careful about putting all of your stuff into a box and measuring the
> dimensions to get a pack size, especially if your are going to use that
size
> to make a pack(length, depth, etc).
>
> I did this twice and ended up with a very large pack that I had to cut
down
> before I realized the error.
>
> Turns out a volume in a rectangular box is much smaller than the volume of
a
> cylinder with the same circumference (given the same height of cylinder or
> length of box).  As we stuff our packs and increase their roundness we are
> also increasing the volume.  It is not just a matter of compression, but
> actually creating more space (or rather less inefficient angularity).
>
> Goforth
>
>
>