On 8/29/2006 at 12:53 PM Roger Merchberger wrote:
 On the aforementioned wikipedia site, the picture of
the 2.8" disk is from 
 Smith-Corona of typewriter/wordprocessor fame - which
may have OEMmed a
few Radio Shack word processors as I remember seeing (about 6 years ago) a 
 1-each blister-pack with an RS-branded 2.8" floppy
in it. IIRC (which I
doubt) the storage was either 100K or 200K.  
You may be too generous.  I've got a SCM PWP-7000LT here that uses those
and IIRC, you get about 50-60K on one.  The drive is the "continuous
spiral" type;  i.e., the head is operated through a clutch off the spindle
motor and performs a sweep of the entire disk surface in a single
operation.
Cheers,
Chuck