On Wed, Apr 13, 2016 at 10:12 AM, Rick Bensene <ri...@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>
