16 Dec
2016
16 Dec
'16
9:43 p.m.
From: Henk Gooijen
I really do not want to mess with the mechanical
construction of the
entire RP03 drive. ... I want to move them "as is".
Well, don't forget, you're probably going to want to go through them
thoroughly before you try and use them, and you might do a fair amount of
dis-assembly for that anyway. So a certain amount of 'taking apart' to get
it out would be useful.
Noel
17 Dec
17 Dec
1:28 a.m.
On Dec 16, 2016, at 4:43 PM, Noel Chiappa <jnc at
mercury.lcs.mit.edu> wrote:
Disconnecting controllers from the drive electronics, or main drive logic boards from the
head cabling, might be a reasonable thing to do.
Disassembling the mechanics is quite another matter. The spindle and head actuator
assemblies are precision mechanisms with very tight tolerances and alignment requirements.
It's not clear if those are documented since messing with them in the field would not
be normal practice. And I suspect that few, if any, of us have the tools or metrological
skills to reassemble dismantled drives.
Some are less fussy. I know from having seen it done that you can take an RF11 drive
apart and rebuild it, though chances are you might have to reformat it if you do. But the
tolerances on those are incredibly loose compared to moving head drives.
paul
From: Henk Gooijen
I really do not want to mess with the mechanical
construction of the
entire RP03 drive. ... I want to move them "as is".
Well, don't forget, you're probably going to want to go through them
thoroughly before you try and use them, and you might do a fair amount of
dis-assembly for that anyway. So a certain amount of 'taking apart' to get
it out would be useful. 
5:51 a.m.
On Sat, Dec 17, 2016 at 1:28 AM, Paul Koning <paulkoning at comcast.net> wrote:
As I said, I would not touch any part of the heads or positioner
(actuator). Unless
whole assembly can be removed as a complete 'module' (as is the case in the
RA60). I also would not attempt to dismantle the spindle.
But often the complete spindle and bearings can be unbolted and lifted out. On
a servo-positioned drive (as I believe this is) this will not affect
alignment. And
replacing the complete spindle assembly was a field repair on most such drives.
Things like the spindle motor (I assume this drive is belt driven),
blower, etc are
not that critical and can be removed without problems.
Is the a maintenance manual for this drive available. It should give
the order for
removing parts (basically don't do anything that involves removing heads!) and
tell you if any alignment is needed when replacing them.
-tony
On Dec 16, 2016, at 4:43 PM, Noel Chiappa <jnc
at mercury.lcs.mit.edu> wrote:
Disconnecting controllers from the drive electronics, or main drive logic boards
from the head cabling, might be a reasonable thing to do.
Disassembling the mechanics is quite another matter. The spindle and head
actuator assemblies are precision mechanisms with very tight tolerances and
alignment requirements. It's not clear if those are documented since messing
with them in the field would not be normal practice. And I suspect that few, if
any, of us have the tools or metrological skills to reassemble dismantled drives.
From: Henk Gooijen
I really do not want to mess with the mechanical
construction of the
entire RP03 drive. ... I want to move them "as is".
Well, don't forget, you're probably going to want to go through them
thoroughly before you try and use them, and you might do a fair amount of
dis-assembly for that anyway. So a certain amount of 'taking apart' to get
it out would be useful.
2934
days inactive
2935
days old
2 comments
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participants (3)
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ard.p850ug1＠gmail.com -
jnc＠mercury.lcs.mit.edu -
paulkoning＠comcast.net