13 Apr
2016
13 Apr
'16
12:33 p.m.
There is a seller on eBay (acpp) that in the past has listed HEPA filters
and heads for RK05's. I bought 3 filters from him a couple of years ago.
I also had a RK05 with heads that were beyond repair. He had the heads an
installed them on the head carriers for an additional fee.
I got the impression that he has a ton of RK05 filters; he just doesn't
list them on eBay constantly.
Marc
On Wed, Apr 13, 2016 at 7:43 AM, william degnan <billdegnan at gmail.com>
wrote:
On Wed, Apr 13, 2016 at 10:12 AM, Rick Bensene
<rickb at bensene.com> wrote:
Bill Degnan wrote:
>
> I replaced my filters a little while ago, I was concerned about
original
filters'
get
deterioration, perhaps these will have decomposed
over time even if not
in
use. So I found a newly-produced filter,
documented here:
http://vintagecomputer.net/browse_thread_record.cfm?id=588&tid=1
But basically 3M Filtrete #0412560 carbon pre-filter cut to match the
original,
from a tracing.
The filter Bill replaced is the external dust filter. While good to
replace, this isn't the internal HEPA filter that Michael wrote about
replacing on his RK05 drives, and that he found available on eBay.
The HEPA filter is inside the drive. It is a filter designed to capture
very tiny particles yet still be a minimal restriction to airflow. To to the HEPA filter, you have to take the bottom
cover off of the drive.
The filter is quite large, and as mentioned, there are two different
types
depending on the age of the drive. If they
haven't been replaced in a
long time, they should be replaced, as they eventually do clog up with
particulates. When this happens, it can restrict the airflow to the disk
platter area, which can lead to dust particles ending up on the platter,
and that can result in head crashes, which are most unpleasant. Sadly,
the manufacturer of the HEPA filter stopped making them a long time ago,
and they can be hard to find. I do believe some manufacturer was making
reproductions of them for a time, but I believe that they are no longer
doing so. So, finding the filters today can be tricky.
-Rick
Oooo...yes my misunderstanding of what you meant. What he said.
--
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