29 May
2007
29 May
'07
1:40 p.m.
Curtis H. Wilbar Jr. wrote:
How about vacuum sealing ? :-) long as your not
trying to run it in a
vacuum
I'd think this would preserve rubber parts and virtually eliminate
moisture.
Really bad. Causes condensation to form on surfaces, lubricants to come out of
bearings and harden, volatiles to come out of materials and condense on
surfaces, "rubber" parts to swell and harden, seals to extrude. Plastic-cased
IC's have been known to rupture, split, crack or even "explode". PC boards
with
internal voids bubble and warp, breaking solder joints and components.
Some drives are hermetically sealed. The seals are not designed to tolerate a
pressure differential between internal atmosphere and external vacuum.
Clean dry air under pressure ( around 0.5psig over) would be better than vacuum.
To store in a vacuum requires parts designed to operate in and/or tolerate a vacuum.
Vacuum storage has been tried before using real vacuum and using those
newfangled (at the time) vacuum foodsavers (as seen on TV!). Results were not
those that were hoped for. Threads about this should be found in the pre-AOL
CompuServe PC forums archives. (Or GEnie--I can't recall which, now.)
==
jd
Computer Science is merely the post-Turing decline in formal systems
theory.