Shoe Shelf Life

Quoted message said:

Side note: I sent back a pair of Fastswitch Flats to Saucony as the
mesh sidewalls were separating away from the soles at the mid point of
the shoe. It was not me and my heavier mass causing this as Pendejo
reported the same observation and I've never had this problem before.
To Saucony's credit and though they've been bought be the big company
(StrideRite), they replaced the shoes no question and have sent me a
new pair. Yes I expect to encounter the same problem down the line
with this model but Saucony's making good and enabling me to get the
use I should have out of 1 pair, by sending me a fresh pair.

Thief! I'm turning you in.

Quoted message said:

..."But EVA also has a shelf life. Krone explained that running shoes
lose about 20 percent of their resiliency in six months without use --
those tiny air bubbles aren't sealed, so the air in them bleeds out --
a main reason for the frequency of new shoe models. "And that's why
you can go online and get last year's models at a significant
discount," Krone added.

This is why I always store my shoes in a hyperbaric chamber.

Cheers,
Craig

--
Corollary to Clarke's Third Law:
Any technology distinguishable from magic is insufficiently
advanced.

Only problem I've ever had with EOLed shoes is after a decade with some
of the older models (Asics 121s) the glue that holds the sole to the
last lets go. A thin layer of ShoGoo and they are good for 300 to 400
miles.

I wonder how much air my fat ass forces out of those tiny bubbles during
a 26 miler.

Quoted message said:

..."But EVA also has a shelf life. Krone explained that running shoes
lose about 20 percent of their resiliency in six months without use --
those tiny air bubbles aren't sealed, so the air in them bleeds out --
a main reason for the frequency of new shoe models. "And that's why
you can go online and get last year's models at a significant
discount," Krone added.

http://tinyurl.com/hlryx

This is a new one on me, not sure I believe it, comes from a shoe
salesman. The guy is saying the pressure of gravity is sufficient to
force out the air (bleed) from the tiny air bubbles to a measure of
nearly 20% resiliency is is lost in 6 months. Well if this is true
imagine the bleeding that takes place with the pressures/forces on
those bubbles from actual use. I gotta figure it's at least 2 or 3
months bare minumum for a Eva based shoe to go from production to the
foot of a runner, if not more.

Side note: I sent back a pair of Fastswitch Flats to Saucony as the
mesh sidewalls were separating away from the soles at the mid point of
the shoe. It was not me and my heavier mass causing this as Pendejo
reported the same observation and I've never had this problem before.
To Saucony's credit and though they've been bought be the big company
(StrideRite), they replaced the shoes no question and have sent me a
new pair. Yes I expect to encounter the same problem down the line
with this model but Saucony's making good and enabling me to get the
use I should have out of 1 pair, by sending me a fresh pair.

Quoted message said:

..."But EVA also has a shelf life. Krone explained that running shoes
lose about 20 percent of their resiliency in six months without use --
those tiny air bubbles aren't sealed, so the air in them bleeds out --
a main reason for the frequency of new shoe models. "And that's why
you can go online and get last year's models at a significant
discount," Krone added.

You have stumbled upon [censored] on the Internet (say it isn't so). This
is so stupid, it hurts.

You can get last year model discounts on all kinds of consumer goods,
many of which don't contain air bubbles that fizz out. Shoes are phased
out this way for the same reasons.

The air bubbles in EVA foam are not pressurized. They will not
spontaneously deflate.

If the bubbles were pressurized but not sealed, it would not take six
freaking months for the air to leak out.

If the bubbles were sealed, the foam would be much more rigid, because
the bubbles would only compress their trapped air under stress, rather
than deflate.

Air bleeding out of foam is a good thing; it's what helps absorb shock.
Foam is squeezed, the air is compressed, and some of it flows out. When
the foam restores its shape, the air flows back in. The walls of the
bubbles, the cell structure, behaves like a spring, and the movement of
air like a shock absorber.

The foam will lose its absorbing properties if the elastomer breaks
down: it will not restore to its original shape, thereby losing its
capacity for air.

That isn't going to happen over a mere six months.

Kaz Kylheku said:

Quoted message said:

..."But EVA also has a shelf life. Krone explained that running shoes
lose about 20 percent of their resiliency in six months without use --
those tiny air bubbles aren't sealed, so the air in them bleeds out --

[snip]

Quoted message said:

You have stumbled upon [censored] on the Internet (say it isn't so). This
is so stupid, it hurts.

[snip]

Quoted message said:

The air bubbles in EVA foam are not pressurized. They will not
spontaneously deflate.

Quoted message said:

If the bubbles were pressurized but not sealed, it would not take six
freaking months for the air to leak out.

[snip]

Damn, well that's $70K for a shoe storage chamber down the tubes.

http://outlet.med1online.com/showproduct.aspx?productid=113

Cheers,
Craig

--
Corollary to Clarke's Third Law:
Any technology distinguishable from magic is insufficiently
advanced.