FD400 drive troubleshooting
dkelvey at hotmail.com
Sun Nov 25 00:27:04 CST 2007
> From: cclist at sydex.com
> On 24 Nov 2007 at 19:27, dwight elvey wrote:
>> 75 is a lot of bands. I'd think that it would need to be a larger
>> disk. Still 45 for a 60 Hz would be 90. Are you sure your not
>> thinking of 33 1/3. That is a lot tougher or 78.
> I'm certain--have a look:
> Note that the 50Hz disc is 45.11 RPM
I got my math wrong. The fellow is also wrong.
45/60 = .75.
100/.75 = 133.333....
If rounded to 133, you get 45.11278195----
Still, using Tony's multiple method, 400 dots
would work fine. It would be a large disk but
it would work.
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