On Jun 8, 2015, at 07:26, Mike Ross <tmfdmike at
gmail.com> wrote:
Hmmm IBM used exactly the same trick - removable platter, with a fixed
platter below it - in 1969 with rather larger platters on their 5440
disk for the System/3... I have one of these; have had various things
to fix (some still unfixed!) but the disks have been entirely
reliable. Cartridges look very similar to RL02...
http://mit-a.com/Images/big/MFCM%20and%202%20disk%20drives.jpg
I haven't seen one of those drives in person, but in the picture it looks like they
have about ten pounds of machined aluminum just in the latches that keep the light plastic
pack dust cover from flying away. Heck, those latches look suitable for space station
docking port latches. :)
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/