no HD Disks in 1541/71 and hub rings - test-drb@ccmp.vtda.org

30 May 2001

On May 30, 20:47, Larry Anderson wrote:

...
  As for hub rings I heard they were required (for
gripping purposes) for
 the older Apple drives (the metal boxy ones), maybe even for the 4040s,
 but I know without them on those old lever drives, you could sure mangle
 a non-protected center hole clamping down on one. 
Yes, the main reason for hub rings was to minimise the damage when you did
that :-)   Our Apple Disk ][s and Commodore 4040/8050 drives never needed
disks with hub rings when they were new, and the ones I have now still
don't.

...
  Anyone have a hub-ring kit still? (reminds me of
today's CD stompers) 
Alas, no.  I remember them, though.

...
  > As others have said, you need disks intended for
single-density or double
...
  > density, not HD.   I've also met one 1541
owner who swears that disks
 > without hub rings won't work in his drive (and never did) because the
 > mechanism doesn't grip them tightly enough (though I'm fairly sure
that's
...
  > just due to a soft spring or a missing screw on
the frame somewhere). 
-- 
Pete						Peter Turnbull
						Network Manager
						University of York