Re: RK05 head alignment -- how difficult?

2017-07-25 Thread Fritz Mueller via cctalk
> On Jul 24, 2017, at 2:25 PM, Noel Chiappa via cctalk > wrote: > > http://gunkies.org/wiki/File:RK05Head.jpg > http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/RK05HeadRefl.jpg Thanks, Noel, that's very helpful! A recent picture of the upper head in my drive:

Re: RK05 head alignment -- how difficult?

2017-07-24 Thread Paul Anderson via cctalk
We used to use the Tex pads. The closest thing that's easy to find are the little pad nurses use before injection available at Sam's, ETC. Sometimes used be diabetics also. On Mon, Jul 24, 2017 at 10:57 AM, Al Kossow via cctalk < cctalk@classiccmp.org> wrote: > > > On 7/23/17 10:12 PM, Fritz

Re: RK05 head alignment -- how difficult?

2017-07-24 Thread Noel Chiappa via cctalk
> is that crucifix-shaped area of low reflection the thing you're speaking > of? It's only visible in reflected light, not direct light; I'm not sure > what it is, perhaps crystals oriented in a different direction from the > rest of the head? Now that I look again, you can see it

Re: RK05 head alignment -- how difficult?

2017-07-24 Thread Noel Chiappa via cctalk
> From: Fritz Mueller > Perhaps it is time to find/train a younger apprentice :-) 'Yes, my master!' :-) > If anybody has a decent picture of a clean/fresh RK05 head, I would > appreciate seeing it Here ya go: http://gunkies.org/wiki/File:RK05Head.jpg That head (NOS) came

Re: RK05 head alignment -- how difficult?

2017-07-24 Thread Chuck Guzis via cctalk
On 07/24/2017 11:31 AM, Fritz Mueller via cctalk wrote: > To answer the question of "where hard to see", I guess it's really an > issue of my old-man-eyes at this point. I find I need to use a > jeweler's headset, or even bench microscope, to really see anything > small in detail these days.

Re: RK05 head alignment -- how difficult?

2017-07-24 Thread Paul Koning via cctalk
> On Jul 24, 2017, at 2:31 PM, Fritz Mueller via cctalk > wrote: > > Thanks for the advice, per usual, folks! > > To answer the question of "where hard to see", I guess it's really an issue > of my old-man-eyes at this point. I find I need to use a jeweler's headset,

Re: RK05 head alignment -- how difficult?

2017-07-24 Thread Fritz Mueller via cctalk
Thanks for the advice, per usual, folks! To answer the question of "where hard to see", I guess it's really an issue of my old-man-eyes at this point. I find I need to use a jeweler's headset, or even bench microscope, to really see anything small in detail these days. It's hard to do that

Re: RK05 head alignment -- how difficult?

2017-07-24 Thread Fritz Mueller via cctalk
Thanks for the advice, per usual, folks! To answer the question of "where hard to see", I guess it's really an issue of my old-man-eyes at this point. I find I need to use a jeweler's headset, or even bench microscope, to really see anything small in detail these days. It's hard to do that

Re: RK05 head alignment -- how difficult?

2017-07-24 Thread Tony Duell via cctalk
On Mon, Jul 24, 2017 at 6:12 AM, Fritz Mueller via cctalk wrote: > "OMG, are you nuts, don't take the heads out, you'll never get them > aligned," > > or is it: > > "Meh, RK05 alignment is not really that tough, and you would be better off > making sure your heads

Re: RK05 head alignment -- how difficult?

2017-07-24 Thread Al Kossow via cctalk
On 7/24/17 9:23 AM, Noel Chiappa via cctalk wrote: > > Sadly, Texsleeves are no longer made, they are the best. > > Yes, I'm bummed about that. > > What's the recommended replacement? Guy might have some ideas, I use lint-free cloth wrapped around the old Texwands I still have. The

Re: RK05 head alignment -- how difficult?

2017-07-24 Thread Noel Chiappa via cctalk
> From: Fritz Mueller > the heads are accumulating dust and oxide in places that are hard see > and get to Sorry, I don't follow this - where are you thinking of? > I'm looking for some advice/calibration from the community here. Hmm, we had to do this once BITD (we had a bad

Re: RK05 head alignment -- how difficult?

2017-07-24 Thread Al Kossow via cctalk
On 7/23/17 10:12 PM, Fritz Mueller via cctalk wrote: > "Meh, RK05 alignment is not really that tough, and you would be better off > making sure your heads are thoroughly clean and intact." This, but it really isn't that difficult to keep them clean with an inspection mirror and a good flat

Re: RK05 head alignment -- how difficult?

2017-07-24 Thread Guy Sotomayor Jr via cctalk
> On Jul 23, 2017, at 10:12 PM, Fritz Mueller via cctalk > wrote: > > Hey folks: > > As some of you know, I've recently restored a PDP-11/45, RK11-C drive > controller, and an RK05 drive. I'm now at the point where I'm working to > recover and archive the contents of

Re: RK05 head alignment -- how difficult?

2017-07-24 Thread Philipp Hachtmann via cctalk
Hey Fritz, As some of you know, I've recently restored a PDP-11/45, RK11-C drive controller, and an RK05 drive. Nice. My 11/45 is not doing anything meaningful... I've been inspecting and cleaning packs as I go, and have avoided mounting any packs that have signs of significant crashes (e.g.

RK05 head alignment -- how difficult?

2017-07-23 Thread Fritz Mueller via cctalk
Hey folks: As some of you know, I've recently restored a PDP-11/45, RK11-C drive controller, and an RK05 drive. I'm now at the point where I'm working to recover and archive the contents of the dozen or so RK05 packs that I got along with the drive and controller. I've been inspecting and