Re: Disk ][ Refurb

[mwillegal <mike@willegal.net>]

On Jun 18, 1:03 am, Chiral <escanf...@gmail.com> wrote:
> On Jun 17, 7:00 am, A2Aviator <a2avia...@gmail.com> wrote:
>
> > On Jun 17, 6:10 am, Silicon Sam <Silicon...@gmail.com> wrote:
>
> > >   The Disk ][ NEVER came from the factory lubed, so why do it?  Now,
> > > the 3.5" drives, (400K, 800K and 1.44M) that's a different story
> > > altogether.  Them suckers were greased up in several places.
>
> > Because if some other goober ever did .. now you gotta get rid of it.
>
> > ..and if you have one thats been well used, it may have built up some
> > resistance. If it's spotless inside, clean the heads and be done with
> > it.
>
> Got'er fixed. Funny enough, the drive (Drive 2 all it's life) that
> initially worked had a speed rated by APTEST of 40. It's head
> alignment (checked against zork, apple diskware, and copy ][ plus) was
> great. Drive 1 had perfect speed, but it's alignment was trashed.
>
> Both work. Anyone know when these drives were made? (#582 & #982)

Spring/summer of '78.  There may be a manufacturing date stamped
somewhere on the inside, though I haven't looked for one on my unit.
My early unit was pre-ordered in 1978 and has a serial # of over
10000. When they first came out, those units sold faster than they
could make them.  Note that later units had a hardware change to the
analog board that improved read recovery.  I've had trouble reading
some commercial disks with mine until I added a reversible version of
the same change to my analog controller.

Regards,
Mike Willegal