27 Feb
2015
27 Feb
'15
9:05 a.m.
On 02/27/2015 06:17 AM, John Foust wrote:
At 06:45 PM 2/26/2015, you wrote:
You're not concerned about the tolerance and
re-centering issues?
You think the cookie will fit back on the hub precisely enough
that it'll be aligned with where tracks were before?
Not so much. A 3.5" floppy is recorded at 135 tpi, where an
80-cylinder 5.25" floppy at 96 tpi. On 5.25" Drivetec floppies, the
cylinder density is double that--192 tpi.
Now consider the hub-clamp mechanism of a 5.25" drive. I suspect that
with a bit of care, one can probably get things right most of the time.
--Chuck