What is the difference between an RK06 and 07 ?
Is it capacity?
Yes, in particular number of cylinders. Both have 3 heads and IIRC same number
of sectors.
The RK07 has narrower heads than the RK06. AFAIK the RK07 will not even read
an RK06 pack (I am not sure the servo will manage to
What is the difference between an RK06 and 07 ?
Is it capacity?
Could this pack be used to align an RK07 ?
I ask because we have an RK07 at the Update Computer Club.
/P
On Wed, Jun 17, 2015 at 08:53:22PM +0100, Jarratt RMA wrote:
I don't have an RK06 and I am not expecting to get one any
On Thu, Jun 18, 2015 at 11:39:19AM +0200, Johnny Billquist wrote:
On 2015-06-18 08:16, Pontus Pihlgren wrote:
I ask because we have an RK07 at the Update Computer Club.
I didn't know. When did we get one, and from where? We had one many
years ago that I dumped. We might still have the packs
On 2015-06-18 08:16, Pontus Pihlgren wrote:
What is the difference between an RK06 and 07 ?
Is it capacity?
Yes. The RK07 is double the capacity.
Could this pack be used to align an RK07 ?
I don't think so. The RK06 and RK07 used the same design for the packs,
but the RK07 packs twice
[Writing alignment disks]
I have an idea that some of these units used an optical interferometer to
determine the head position
Quite possible. But it also requires the movement control being
different from a standard drive, in order to drive at the precision, as
well as the feedback
On Jun 17, 2015, at 1:50 PM, Johnny Billquist b...@update.uu.se wrote:
On 2015-06-17 19:40, tony duell wrote:
[Writing alignment disks]
As far as I know, in special machines mounted on slabs on stone
weighting tons, standing on dampeners, so that you had absolutely
vibration free
On 06/17/2015 11:56 AM, Johnny Billquist wrote:
On 2015-06-17 18:36, Pontus Pihlgren wrote:
How was alignment packs produced?
As far as I know, in special machines mounted on slabs on stone
weighting tons, standing on dampeners, so that you had absolutely
vibration free environment, and
Microdata had a setup they used for packs, then later for writing servo
platters for their Reflex winchester drives.
Similar to this system someone made a video of on youtube
https://youtu.be/p4v7RRadC8E
The electronics, optics, lasers and control heads show up on ebay from
time to time.
On 2015-06-17 18:36, Pontus Pihlgren wrote:
How was alignment packs produced?
As far as I know, in special machines mounted on slabs on stone
weighting tons, standing on dampeners, so that you had absolutely
vibration free environment, and then a very precisely controlled head
control
From: Pontus Pihlgren
How was alignment packs produced?
On a special rig, I'm pretty sure. I don't know how the RK06 alignment pack
works, but I am familiar with the RK05 (our machine had them, and we had to
realign one after a head crash), and I assume it's probably similar; it had to
How was alignment packs produced?
/P
On Wed, Jun 17, 2015 at 11:39:25AM -0400, Noel Chiappa wrote:
Anyone need an RK06 alignment pack:
http://www.ebay.com/itm/Digital-Equipment-RK06-Aglinment-pack-/221803433215
Seems like something that should definitely get saved!
Noel
On Wed, Jun 17, 2015 at 11:39:25AM -0400, Noel Chiappa wrote:
Anyone need an RK06 alignment pack:
http://www.ebay.com/itm/Digital-Equipment-RK06-Aglinment-pack-/221803433215
Seems like something that should definitely get saved!
That's AMAZING! I never had RK06es (just RK07s -- DM has them
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