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Old 28th July 2008, 03:09   #7 (permalink)
jmc
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Default Re: New Comfort System

You will need to have that pin strong enough that it will not bend if the heel strikes a hard surface at an angle, such as during a mis-step. A bent pin will most certainly bind inside the heel tube and this will disable the pump.

Another thing to think about -- pumping air into enclosed spaces between the shoe sole and the foot might result in obnoxious noises (i.e. "farting sounds") as the air escapes. Using multiple air outlets might help this.

The idea might have merit.
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