3.5" floppy drive question(s)

[Steven Hirsch]

On Sat, 11 Oct 2008, Fred Cisin wrote:

>> Also, anyone know if there if it is possible to slow the spindle speed
>> so that 1.44M can be done on machines that only have DD data rate ?
>> (and if so, any of the above drives capable of being slowed ?)  Would
>> that even work ?
>
> Nobody has successfully used a 3.5" at 150RPM.  Yet.
> Besides the "normal" 300RPM drives, there are some 600RPM (old Sony), and
> 360RPM (NEC and a few others)

That's not entirely correct.  Amiga 3000 and 4000 machines had a Chinon 
drive mechanism that could run at 1/2 speed in order to write hi-density 
formats with an FDC chip no capable of running at high data rates.


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