6 Feb
2009
6 Feb
'09
1:29 p.m.
>> Some of the older drives had a flywheel. A
drill, in indexing jig, a
>> light and photocell, any you could modify a 3.5" drive to provide 10 or 16
>> pulses from physically fixed positions, without being dependent on
>> repeatability of rotational speed.
On Fri, 6 Feb 2009, dwight elvey wrote:
On the ones I'm looking at, one could glue some
equally
and uses a sensor on the motor to create the index.
The Mitsumi drive I have in my hand right now has
just such an exposed flywheel/motor.
I looked at the Teacs I have and don't believe one
could do this because the motor is mounted differently.
I was thinking more in terms of the era of the Shugart SA350.
It is true that on the integrated motor/flywheel models the marks would
have to be added or painted on, rather than drilled through the flywheel.
I've never made any modifications to "modern" drives.
In making a 3.5" drive for H80 and N*, is there any compelling reason to
NOT use older drives? (does it have to be less than 1/2" thick?)
Could a combo 3.5" and 5.25" drive be modified to do hard sector 5.25"?
(thus adding 3.5" without losing 5.25" and still fitting stock mounting
locations)