From: "Patrick Rigney"
<patrick(a)evocative.com>
Hi All
Well, I dug out my H89. I turned it on, POP, turned it
off. Smoke comes from the one side.
Well, it looked like one of the 2.2 uf tantalums decided
Oh yeah... that's fully the behavior of the "popcorn" machine I referred to
earlier.
Years ago, I'd place a second drive in the
machine by
installing two half height drives. The boot drive it
behind the other drive so I can't see what the difficulty
is with the other disk.
I just bought a handful of half-height drives and was about to launch into
this myself. Did you feel a need to upgrade anything in the power supply
before doing this, or is it up to running both motors simultaneously if/when
that occurs?
Patrick
Hi Patrick
I used it this way for a number of years without any problems.
I do have the drives setup so that the select turns the motors
off when not being accessed. I believe this is the same as the
original. This is a jumper select on most drives.
I did have to file a little material from the bezel where the
drives fit into the front. Other than that it was reasonable.
You can't see this with the drive installed.
You do need to make sure that all of the shielding is put back
in. It is close to the yoke of the tube and needs to be protected
from the stray fields( writes will fail ). I don't
recall if I
had to drill any more mount holes but I'll know more as I debug
my disk spinning problem. Of course, you need a new cable
( easily made ) and an extra power connector.
Make sure that only one drive has the terminator( this is often
missed by many ). The controller was originally setup to run
3 drives, one inside and two outside. Dual drives are handy.
Dwight