DEC RK05 HEPA Filters

[Marc Howard]

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'
> > > 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
> get
> > 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.
>
> --
> @ BillDeg:
> Web: vintagecomputer.net
> Twitter: @billdeg <https://twitter.com/billdeg>
> Youtube: @billdeg <https://www.youtube.com/user/billdeg>
> Unauthorized Bio <http://www.vintagecomputer.net/readme.cfm>
>