You have to read EVERY word before replying. Note my use of the word LATER.
"Apple didn't use dust covers on the later manual inject drives because they
proved to be more effective *catchers* of dust."
As in later than the auto-inject drives.
The big flaw in those dust covers is they DON'T seal effectively. Air still
gets drawn through the foam gasket around the cable connector, pulling dust and
hair etc. through the disk slot where it gets trapped inside the drive.
The first uses of the manual inject drive had a flap that was worthless for
keeping junk out of the drive because it didn't completely cover the slot in
the outer casing. For some reason Apple accepted their suppliers providing
drives with a flap designed to "seal" a typical PC style flat faceplate
attached directly to the drive - while Apple's designers made the slots in the
Mac cases shaped however they thought looked stylin'.
That would certainly have offended Steve Jobs' artistic sensibilities, had he
been involved with Apple at the time.
--- On Sat, 9/12/09, Mac128DOTcom <mac128mail-h...@yahoo.com> wrote:
> From: Mac128DOTcom <mac128mail-h...@yahoo.com>
> Subject: Re: Mac SE floppy
> To: "Vintage Macs" <vintage-macs@googlegroups.com>
> Date: Saturday, September 12, 2009, 11:05 AM
>
> I don't think there were any 800K manual inject drives,
> only 1.44MB
> superdrives after Apple started getting cheap. In fact, the
> later
> manual inject drives introduced door flaps as well, cut
> down on dust
> being pulled through. What that says to me is that during
> the SE
> production, there would have only been auto-inject drives,
> even on the
> FDHD. Therefore, I would question that advice to chuck the
> dust shield
> for the SE. The Classic and Color Classic were different
> machines
> which drew air indirectly from the the floppy drive, but
> the SE more
> or less sucked most of its air right through the floppy,
> which
> prompted Apple to offer optional plastic dust shields. On
> an SE with
> such a shield, the drive is more or less hermetically
> sealed, no air
> being drawn through it at all. If anything I would
> recommend adding
> the shield to the SE, especially if it's going to be used
> in a dirty
> location, like a garage or basement "workshop".
>
>
> On Sep 7, 8:47 pm, Gregg Eshelman <g_ala...@yahoo.com>
> wrote:
> >
> > If your Mac still has the plastic dust cover on its
> floppy drive, remove it and throw it away. Apple didn't use
> dust covers on the later manual inject drives because they
> proved to be more effective *catchers* of dust.
> >
> > With the cover, any dust that gets sucked into the
> drive stays in the drive. Without the cover, dust will
> mostly get sucked *through* the drive.
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