[Coco] 5-1/4″ DS DD 80 track drive, 300 RPM mod

[Kandur]

Nah, just trial and error. Grounded the speed select wire
and noticed that the flywheel slowed down.
Checked the speed with Robert Gault's RPM tester,
http://qdv.pw/coco/blog/2014/06/19/floppy-drive-rpm-test/ 
it was spot on 300 rpm.
Now I'm ready to copy my OS-9 hd backup floppy set to dw server 
virtual floppies. Searching for HOW-TOs, hope, it will work.

Kandur

Tuesday, July 1, 2014, 8:05:47 PM, you wrote:
> Hi Kandur!
> An awesome job at modifying HD 5.25" 80 track
> drives to work on a Coco
> Floppy Controller!  You have done what no one
> else has never done before to
> my knowledge.  Now I can use mine as well.  How
> did you figure it out?  With
> the drive's docs perhaps?  :)  You are a
> hardware genius yourself!
> Fantastic Job!  Take care my friend.

> Kip Koon
> computerdoc at sc.rr.com
> http://www.cocopedia.com/wiki/index.php/Kip_Koon
> http://computerpcdoc.com/


> -----Original Message-----
> From: Coco
> [mailto:coco-bounces at maltedmedia.com] On Behalf Of Kandur
> Sent: Tuesday, July 01, 2014 8:12 PM
> To: coco at maltedmedia.com
> Subject: [Coco] 5-1/4″ DS DD 80 track drive, 300 RPM mod

> Finally, since 1989, I was able to read my HD backup floppies.
> These were created on a 5-1/4? DS DD 80 Track 300 RPM drive.
> To find such drives these days is next to impossible.
> On the other hand, there are plenty of DS DD 80
> Track 360 RPM 5-1/4? drives
> around, 
> such as the Panasonic JU-475 series. I had a couple of those.
> Moving around jumpers, supposed to change it?s rpm to 300.
> Tried every possible combination, but it didn?t work with the Coco.
> Here is the solution,
> http://qdv.pw/coco/blog/2014/07/01/ds-dd-80-track-5-14-drive-300-rpm-mod-suc
> cess/
> Now that I have DW4 working with both virtual and real floppy drives,
> I?d like to find a way to copy the HD backup
> floppies to virtual floppies
> and restore the backup set to a hard drive. 
> Can anyone tell, by looking at the directory
> listing,  which backup program
> was used?

> Kandur

> -- 
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco