Help identifying a big ol' drive platter

Lee Courtney charlesleecourtney at yahoo.com
Fri Jan 23 23:31:42 CST 2009


There is a Bryant drive on display in the lobby of IT-Ceum (Swedish Computer History Museum - http://www.itceum.se/english/index.php) in Linköping. Sorry, no pictures.

Lee Courtney


--- On Fri, 1/23/09, Josh Dersch <derschjo at mail.msu.edu> wrote:

> From: Josh Dersch <derschjo at mail.msu.edu>
> Subject: Re: Help identifying a big ol' drive platter
> To: "On-Topic Posts Only" <cctech at classiccmp.org>
> Date: Friday, January 23, 2009, 8:55 PM
> Chuck Guzis wrote:
> > On 22 Jan 2009 at 3:42, William Maddox wrote:
> > 
> >   
> >> I've seen large platters like this on
> head-per-track disks
> >> made by Burroughs.  There's one on the Illiac
> IV at CHM.
> >> I saw a similar drive at CMU that was allegedly
> the swapping
> >> disk for a DEC KA-10.  I vaguely remember being
> told that
> >> the capacity was 512K words (36 bit on the KA-10).
>  The
> >> drive was designed for speed, not capacity.
> >>     
> > 
> > Could also be from one of the vertically-mounted
> Bryant disks.  I used to have one of those platters in my
> office; thought about making a coffee table of it, but the
> hole in the middle was a problem.
> > 
> > IIRC, they didn't spin very fast--about 600 RPM. 
> The heads were very heavy.  
> > There are photos and specs for Byrant units on the
> web.
> > 
> > Cheers,
> > Chuck
> > 
> > 
> >   
> Wow, that's quite a drive!
> 
> Found a brochure of sorts at
> http://archive.computerhistory.org/resources/text/Bryant/Bryant.Model2.1965.102646212.pdf.
>  (Gotta love the gal they have on the cover :)).
> 
> Unfortunately these drives have 39" platters according
> to the above, so they're not what my platter came
> from... very cool, though :)
> 
> Josh




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