Re: Disk ][ Refurb

[Silicon Sam <SiliconSam@gmail.com>]

On Jun 16, 8:36 pm, "Garberstreet Electronics" <willy4...@comcast.net>
wrote:
> "Chiral" <escanf...@gmail.com> wrote in message51544d2d-cd42-41a2-ab45-91496f93d723@y17g2000yqn.googlegroups.com">news:51544d2d-cd42-41a2-ab45-91496f93d723@y17g2000yqn.googlegroups.com...
> >I am the proud owner of drive #582 ( and # 972, as well). Not to
> > gloat, but that's pretty cool.
>
> > Anyway, #972 works fine, probably because it was Drive 2 for it's
> > entire life. I have the other disk 2 drive disassembled.
> > First question:
> > Which one of those pots on the analog board is used for the speed
> > control?
>
> The pot is located differently on different drives.
> That information can be found in the FAQs.
>
> http://home.swbell.net/rubywand/A2FAQs1START.html
>
> > Second:
> > Is there any need for head alignment? I have read that these drives
> > are pretty brainless and that knocking sound on boot is the controller
> > putting the head in the right place (there is no mechanism in these
> > drives to determine absolute head position.
>
> Absolutely, and usually, NOT! In fact, the only one
> I did mess with took forever to get back, so I'd have
> to say, no.
>
> > Third:
> > What do I clean the head with?
>
> Alcohol, Q-Tip and a good disk cleaner, if you can find one.
> I've got several, but no, you can't have one, unless you can
> make me a very rich man. BUWAHAHAHAHAHAHA!!!!
>
> > Fourth:
> > Does any part of the drive enjoy lubrication (lots of squeaks)
>
> Vaseline, KY, uh, anything petroleum based, I would think.
> Maybe a light bearing grease, silicone based? I'd wait to
> see what everyone else has to say on this one.
>
> Garberstreet Electronicshttp://www.garberstreet.com

 On the Disk ][, I have repaired hundreds back in shop days, and never
lubed any of them.  The do enjoy a good cleaning, of course.  Clean
the platter, and make the rails as shiny as you can.  Not sure if you
want to take it apart, but that's the best way..

  The speed control pot is on the PCB at the back of the drive,
typically pointed horizontally. Pot is a 10 turn style, so you can get
accurate adjustment. Apple used Shugart and Alps mechanisms.  They are
close in design.  Shugarts typically have a colored platter, Alps is
white.  And quieter because of the material.

  I still have Disk ][ 001061 somewhere.