8 Mar
2023
8 Mar
'23
7:23 p.m.
On Mar 8, 2023, at 4:18 PM, Chuck Guzis via cctalk
<cctalk(a)classiccmp.org> wrote:
On 3/8/23 13:53, Sellam Abraham via cctalk wrote:
Heavy bugger,no?
Nickel-plated Vicalloy (a type of phosphor-bronze).
Yes, heavy. I have one too, from UNIVAC 1
Who can read them now? ;-)
cje
On Wed,
Mar 8, 2023 at 1:39 PM Chuck Guzis via cctalk <cctalk(a)classiccmp.org>
wrote:
On the subject of 1/2" open-reel tape, I note that the tapes initially
used with the IBM 726 drive (1952) used a cellulose acetate base. In
1956, a switch was made to Mylar. That's unfortunate, since early
existing 726 tapes have almost certainly rotted away due to vinegar
syndrome.
I have what appears to be a stainless steel UNIVAC tape. It isn't
crumbling away into dust anytime soon.