Floppy pressure pad replacement?
m.zahorik at sbcglobal.net
Thu Nov 12 12:50:28 CST 2020
On my Shugart and Siemens 8 inch drives I've used a heavy felt pad that I
made using a steel punch. Then super glued it to the pin that snaps into the
pickup arm. I've had the snap pin break and have successfully used a small
nylon bolt and nut, which has the pad glue to it. I have tried small pieces
of Teflon, cloth, plastic, but found that the heavy felt is the easiest to
get to work and doesn't seem to harm the media.
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Mattis Lind
Sent: Thursday, November 12, 2020 12:22 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Floppy pressure pad replacement?
Does anyone have some good hints on what and how to replace them?
I have a CDC 8 inch floppy drive with a missing pressure pad. Tried to put
some half a millimeter felt cloth with some double adhesive tape to replace
But it didn't work very well. If I gently pushed the upper pressure pad arm
it started to read at least. But it looks like it is possible to over-do
it. I added more padding and then it probably got too thick since it now
failed again. I guess that if there is a bit too much pressure the signal
might be too high in the input amplifier leading to distortion?
What is the best pressure pad material and what are you usually replacing
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