12 Aug
2013
12 Aug
'13
1 p.m.
Update.
On Sat, Aug 10, 2013 at 10:22 PM, Robert Jarratt
<robert.jarratt at ntlworld.com> wrote:
I have no experience of the SCSI drives but do have some with the Micropolis
1325 (RD53). You don't say if the heads actually move when it spins up.
No, because I didn't know when I wrote the post. In fact, the heads didn't move.
I found with the RD53 after removing the goo you have
to make up the thickness
of the original rubber bumper with the strips of paper.
Exactly.
Between me posting the message and it being released onto the cctech
list, my friend did find this:
http://www.classiccmp.org/pipermail/cctech/2011-November/088388.html
and paid attention to the paragraph about the thickness of the paper
(the rubber bumper on his 1375 drive was all goo, almost like glue and
he had to remove it).
After some experimentation, his solution was four layers of thin
carton from a box of painkillers (Ibux). Now the 1375 drive works
again.
So thanks again. :-)
Even then I think that sometimes the goo has been so
bad that it has gummed up the inner
mechanism where you can't see or reach and so the head assembly resists movement a
bit too much.
I would love to know if the head assembly can be
removed to allow the goo to be cleaned up properly.
We still don't know that. :-)
However, I think that would be a very delicate operation: how do you
get the heads "out" (away) from the platters to avoid a head crash?
HTH
--
Regards,
Torfinn Ingolfsen