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[pct-l] packs: comfort vs weight: Why packs work

Tom writes:

> It makes one hellofa difference to have the weight on the centerline rather 
> than the back.

If so, then a capital "i" shaped frame would provide the upper cross piece to 
tie shoulder straps into and hang weight from, which would be supported by 
the single middle stay, which would transfer its weight to the hip wrapping 
lower cross piece that is attached to the hip belt.  The two attachment 
points of the vertical stay to the two cross pieces could rotate with the 
flexing of the body walking movement.  The attachment points would have to be 
tough and durable.  Perhaps two vertical stays only an inch or two apart 
running down the spine would be stronger (and possibly more comfortable).

I love getting back onto the edge of gear development and design. 

"Salvitur Ambulando"
(walking solves all things)
            St. Augustine

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