H17 Disk Drives

[John Frankle]

I am wondering if anyone in the group has had experience in substituting the disk drive in the H17 configuration. In other words removing the standard drive and substituting another model, preferably a half height unit.

Appreciate any guidance.

 

Thanks,

 

John Frankle

[Norberto Collado]

Yes! In my H17 enclosure I have the 3.5” floppies attached to the HSFE to the H17 cable along with the half-height 5.25” floppy drive.  I have another half-height 5.25” floppy drive to add to cover the front opening.  The full height drive on the left is no longer working but it covers the hole properly.

 

Norberto

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[Kenneth L. Owen]

Hi John,

 

Yes, I run several different types of drives.  Originally, the computer had the standard 40 track, single sided Siemens drive.  I upgraded to TEAC FD55F, 80 track, 2 sides, ½ height and these drives are still in service today.  I also run 40 track, 2 side drives removed from various computers, many being TANDON 100-2.  Also, I run 3.5” floppy disk drives formatted 80 track, 2 sides with no problem.

 

-- ken

 

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From: se...@googlegroups.com [mailto:se...@googlegroups.com] On Behalf Of John Frankle
Sent: Sunday, November 17, 2013 3:47 PM
To: se...@googlegroups.com
Subject: [sebhc] H17 Disk Drives

 

I am wondering if anyone in the group has had experience in substituting the disk drive in the H17 configuration. In other words removing the standard drive and substituting another model, preferably a half height unit.

--

[Norberto Collado]

The final goal is to have two 3.5” drives (HSFE) and one 5.25” half-height going into the H17 controller and then two 3.5” drives and one 5.25” half-height going into the H8-Z37 controller for a total of six floppy drives (four 3.5” and two 5.25” half-height drives).

 

Norberto

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[John Frankle]

Norberto and Ken, Thanks for your responses. If I narrow the requirement to read and write 100K Hard Sectored diskettes, would any 300rpm 40 track drive work in conjunction with the H17 controller? Would I have to worry that some drives would not handle the sector pulses correctly?

 

Thanks,

 

John Frankle

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[Glenn Roberts]

Any “360K”  “PC” style drive should work. The only trick might be figuring out the jumpers.  I am using some half height Fujitsu M2551A drives salvaged from a PC years ago (I think I threw out a lot more – wish I’d save them!).  I’ve since repurposed these drives for the ’37 (soft sectored) but when I had them in my H17 (according to my notes at least) I had the jumpers set as follows:

 

                DK0:       DS 2 Jumper installed

                DK1:       DS 1 Jumper installed

                The “RDY” jumpers were also installed on both drives

 

They worked perfectly as H17 drives (nicer than the original Siemens drives – no banging heads loading and unloading!)

 

-          Glenn

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