[Coco] FD-502 dual drive system on eBay (not mine)

[Luis Antoniosi (CoCoDemus)]

you will need to drill new holes on it since they don't match.


On Mon, Sep 16, 2013 at 4:15 PM, Christopher Smith <csmith at wolfram.com>wrote:

> Excellent, so it looks like I may be able to make a simple conversion from
> one of the full-height units, then.  I'll just have to keep an eye out for
> a half-height, DS/DD drive.  The second drive would probably be the
> quad-density one that I have currently.  I suppose I should start looking
> at how to swap drive IDs as well.
>
> Chris
>
> ----- Original Message -----
> > From: "Rogelio Perea" <os9dude at gmail.com>
> > To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> > Sent: Monday, September 16, 2013 2:52:53 PM
> > Subject: Re: [Coco] FD-502 dual drive system on eBay (not mine)
> >
> > On Mon, Sep 16, 2013, Christopher Smith wrote:
> >
> > I do wish people didn't pay nearly so much for those two drive
> > things.
> > >  Honestly, I've begun to wonder whether I could convert one of the
> > >  single
> > > drive boxes to hold two half-height drives.  Not sure if they'd
> > > mount
> > > properly in the case, and have no idea whether the power supply
> > > would be
> > > sufficient.
> > >
> >
> > I added a second drive to my FD-502 years ago (20+) and did not
> > install the
> > fan as suggested in the user manual; had the system in close
> > observation
> > for a while and even under heavy disk usage (OS9L2) the power supply
> > never
> > defaulted, and it is still rock solid to this day. That FD-502 I use
> > exclusively on my CoCo 3 setup.
> >
> > A little bit more than a year ago I upgraded my CoCo 1's 26-3029 disk
> > system (prior model before the FD-500): drive was a full height
> > device
> > mounted on a corresponding case - took the original drive out and
> > replaced
> > it with two TEAC FD-55 half-height drives, they sat nicely on the
> > case -
> > only had to drill a couple of mounting holes on the bottom to secure
> > the
> > drives inside. The full height case's power supply is a no frills
> > linear
> > one, again as with my first days with the upgraded FD-502, after
> > hooking up
> > both drives to it I kept a close eye on the power demands, play
> > tested with
> > OS9L1 to my heart's content and not a single problem crept in - I did
> > put a
> > fresh helping of heat sink silicone grease on the power regulator
> > before
> > hooking up the drives, power supply runs warm to the touch but
> > nothing
> > beyond the ordinary.
> >
> > Newer drives will have less power demands than older units, that has
> > to
> > account for my problem free experiences with the disk system upgrades
> > noted
> > above.
> >
> > -- RP
> >
> > --
> > Coco mailing list
> > Coco at maltedmedia.com
> > http://five.pairlist.net/mailman/listinfo/coco
> >
>
> --
> Christopher Smith
> Systems Engineer, Wolfram Research
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco
>



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