working magnetic drum stores?

From: Peter C. Wallace <pcw_at_mesanet.com>
Date: Fri Mar 26 09:56:29 2004

On Fri, 26 Mar 2004, Tony Duell wrote:

> >
> > On Thu, 25 Mar 2004, Jules Richardson wrote:
> >
> > > Just out of curiousity, does anyone still have a working drum storage
> > > device? wondering if any working examples have survived...
> >
> > I've got a fixed head disk drive...kinda sorta like a drum except it's a
>
> The big difference is that the disk has flying heads which essentially
> set their own working clearance, the drum has haads fixed to the chassis
> (which are adjustable for running height when the drum is set up). You
> need a pretty low run-out in a drum's bearings.


Actually some drums have flying heads, Bryant at one time had drums with
flying heads and a slightly conical drum, so that the drum could be lifted to
approach the heads when the drum was up to "flying" speed...



Peter Wallace
Received on Fri Mar 26 2004 - 09:56:29 GMT