Re: Chain Waxing, hot, Why it Works?

In article
<GI6dnd6VAaYdgZLZnZ2dnUVZ_sadnZ2d@xxxxxxxxxxx>,
Peter Cole <peter_cole@xxxxxxxxxxx> wrote:

Peter Cole wrote:
41 wrote:

Peter Cole wrote:



Wax is different than grease in that it exhibits "stiction". It presents
a high friction surface until the pressure melts it, at which point it
shifts to low friction. This phenomenon is obvious in cross country ski
waxes.



Are you sure that is the mechanism, is it pressure or is it friction,
or is it the water that is melting.


Apologies, to be clear, it's the snow that's melting, not the wax.

A further point, ice is rather unique in that melt point goes down with
pressure (in the temp/pressure region of interest). Paraffin doesn't, so
the mechanism of paraffin melting would be from friction, not pressure
related phase change like ice.

Melting point of water is depressed by 1 K / 100 bar. Skis
do not exert enough pressure to melt the snow.

--
Michael Press
.

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