11 Mar
2014
11 Mar
'14
12:54 p.m.
Hi,
Sure. The onyl reason to have it well-centred it to improve mechanical
balance and reduce vibration.
I wonder if excessive vibration could end up makign the heads more
unstable and more liable to crash.
In any case, it can't hurt to get it centred as accurately as you can.
i've seen photos of people at the factory
inspecting disk packs
(admittedly the 5 and 10 disk ones) with a dial test indicator to check
the cnterign of the platter(s). I would assume that was necessary.
I claim that it
was (only) better to do that. Well centered disks
minimize noise, vibration, and wear at the spindle bearing.
The disk surface has no relationship to where the tracks will be written
onto it. If the centering is as non-critical as you
suggest, I wonder why there
wasn't a machined regiser (step) on the hub, so you could just put the
platter on and clamp it up
Perhaps they planned to use disks with different inner
hole diameter? I
was wondering about that as well. Very impracticable. I thoght the correct cleaner did contain water
(something like a 91%
propn-2-ol to 9% distileld water mixture)
Yes, they say 91% alcohol. I assume that
they meant "at least" 91%...