Motors for 14-in hard drives - test-drb@ccmp.vtda.org

18 Mar 2008

From: Robert Nansel <bnansel at bigpond.net.au>
...

 What size motor was typically used in a 14-in fixed drive, and what
 sort of mechanical interface did a disk pack have with the spindle or
 hub?  I haven't been able to find any really clear pictures or
 diagrams of the mechanics of such units. 
I don't know, but I do know that they run up to more than their rated  
speed and then slow down so that they come online faster. There is a  
problem if you load a disc, realise its the wrong one, run the drive  
down, change the disc and power it up again. I did that once on an  
80MB five high pack drive and burnt the motor out. It was on a GEC  
4080 and I think the drive was a re-badged CDC one.