FW: Third round of Diskette Experiments completed (results)

[Allison]

>
>Subject: RE: FW: Third round of Diskette Experiments completed  (results)
>   From: Fred Cisin <cisin at xenosoft.com>
>   Date: Fri, 29 Sep 2006 18:23:34 -0700 (PDT)
>     To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>On Fri, 29 Sep 2006, Chuck Guzis wrote:
>> There were some really terrible 5.25" DSDD (360K) disks marketed.  One type
>> was sold by Control Data (StorageMaster).   If I see one of those in a
>> . . .
>> "Elephant" brand 360Ks can be problematical in the same way, as can the
>> "Precision" brand.
>
>Just about every brand produced some bad batches.
>The Verbatims right before "Datalife" were pretty bad.  Was the trademark
>"Datalife" created just to try to reassure us that they were no longer
>going to jopardize the life of our data?
>
>The worst 360Ks that I encountered was Roytype (Royal Typewriter).
>Within a few minutes after writing and verifying, they would be blank
>again.    Hmmmm.  could also get something like that from the wrong
>coercivity, ...
>

It all started back when with the 3M Blackwatch audotape.. Great stuff until
it was around afew years then it shed binder like mad.

It takes a bit of majik to get the oxide coating to stick to the mylar 
base.

the other factor was that of all the brands I think the base material
only came from three or five makers like 3M, BASF, Nashua, Dupont maybe 
others. The key is if a maker lost the receipe that could show up 
as their brand and five others or maybe only the others!


Allison