From: Pete Turnbull: Tuesday, July 28, 2015 10:58 AM
On 28/07/2015 18:22, Vincent Slyngstad wrote:
What do folks think of the idea of thickening the shaft, terminating it
in a hemisphere, but then cutting half-way down the result with a Y or X
shaped cut? The cut would hopefully allow the resul
my take on these would be make them out of soft metal,(Al) thread the post
holes and use a threaded post with a
recess for either a "O" ring or tubing to hold the panel.
- Jerry
On Tuesday, July 28, 2015 7:47 PM, "ste...@malikoff.com"
wrote:
I think there are other ways to pro
Hi Jay,
I appreciate you explaining reforming in such detail and I will look it up as
you suggest and I'll definitely keep this in mind when I start checking things
out in my Altair. Thank you very much.
Kip Koon
computer...@sc.rr.com
http://www.cocopedia.com/wiki/index.php/Kip_Koon
> -Or
OK at the risk of restarting a long discussion about the value of reforming or
lack thereof
Reforming a cap means to apply power to the cap at or a little below its rated
voltage but limiting the current with a resistor in series with the cap until
the voltage drop across the resistor indic
I think there are other ways to produce this than a one-piece molding, if the
aforementioned RC balljoints aren't suitable replacements.
I'd take some nylon, acetal, HDPE etc. threaded bar stock (plenty on eBay) and
make a form tool for the ball and post combined, then knock them
out on a lathe.
On 07/28/2015 12:34 PM, Shaun Halstead wrote:
Still cleaning the shop, trying to be out by the end of the week-ish. We have
the following
equipment available:
TU-80 family tape drive, in frame. Works, passes diagnostics. Make offer.
Photos:
http://microfilmks.com/LMSI/
Hmm, that's a CDC
> There are several kinds. ... I'll look and see if I have any of those,
> to take a photo of.
Alas, I don't.
I do have some of the third kind (which are intermediate between those two
previously discussed; they have the holes for bolting to the rack, but don't
have the captive nuts).
On Tuesday (07/28/2015 at 11:22AM -0400), Douglas Taylor wrote:
> I ran into this looking for something else on ebay:
>
> Digital Constant Voltage Conditioner H7225 item 331591861028
>
> I don't think I ever saw one of these before, were they of any use?
I have one. Heavy beast. It is a ferro
On 07/28/2015 01:01 PM, Noel Chiappa wrote:
> From: Chuck Guzis
> Does anyone have a photo or mechanical drawing of one of these things?
There are several kinds. These:
http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/H960FrontPanelClips.jpg
The balls remind me of rod-end linkage s
On 07/28/2015 11:19 AM, Shaun Halstead wrote:
> While cleaning up the shop, I found a stockpile (qty: 85) of brand new, in
> the plastic wrap,
> Carlisle DC300XL/P-600 QIC tapes. They're arranged in one complete case of
> 50 (subdivided into
> boxes of 10, each of which has two smaller boxes
On Tue, 28 Jul 2015, William Donzelli wrote:
There are several kinds. These:
http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/H960FrontPanelClips.jpg
You know...that wouldn't be terribly difficult to print. The heat-set
inserts are easily obtainable too. (that little metal threaded bit)
Any
> There are several kinds. These:
>
> http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/H960FrontPanelClips.jpg
I THINK YOU FORGOT SOMETHING...
--
toober
> From: Chuck Guzis
> Does anyone have a photo or mechanical drawing of one of these things?
There are several kinds. These:
http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/H960FrontPanelClips.jpg
are some of the better ones; they are connected to the rack via countersunk
screws (go in
Does anyone have a photo or mechanical drawing of one of these things?
You've got me curious now.
--Chuck
On 7/28/15 10:22 AM, Vincent Slyngstad wrote:
What do folks think of the idea of thickening the shaft, terminating it in a
hemisphere, but then cutting half-way down the result with a Y or X shaped cut?
The cut would hopefully allow the result
to flex and taper into the socket,
providing plen
On 28/07/2015 18:22, Vincent Slyngstad wrote:
What do folks think of the idea of thickening the shaft, terminating it
in a hemisphere, but then cutting half-way down the result with a Y or X
shaped cut? The cut would hopefully allow the result to flex and taper
into the socket,
providing plenty
From: Charles Dickman: Tuesday, July 28, 2015 9:03 AM
If the posts and balls are metal, the panel sockets are going to crack
because there will not be any give in the shaft. If the ball and shaft
is replaced with a solid pin, the panel sockets will get damaged
because the socket will have to flex
Still cleaning the shop, trying to be out by the end of the week-ish. We have
the following
equipment available:
TU-80 family tape drive, in frame. Works, passes diagnostics. Make offer.
Photos:
http://microfilmks.com/LMSI/
Unknown power supply module. Has NCR part numbers but google gives
On 28/07/2015 17:52, Tothwolf wrote:
If they are made of ABS and the ball isn't critical, why not mill or
drill out a small bit of the broken stem and solvent weld in some round
ABS stock to make a new stem? Methylene chloride (dichloromethane) works
extremely well for ABS (methyl ethyl ketone i
Hi Jay,
Thank you so much for the advice. What is reforming a capacitor? Does that
mention the electrolytic capacitors may have to be repolarized? If so, how to
you do that? How do you know if a power cap needs to be reformed or not? To
get to the transformer, I'll have to take out just abo
On Tue, 28 Jul 2015, Pete Turnbull wrote:
On 27/07/2015 23:13, Tothwolf wrote:
On Mon, 27 Jul 2015, John Wilson wrote:
The only thing here is, it's a *terrible* design. Those damn nubs
snap off so easily (I'm sure decades of outgassing haven't helped),
even when you're expecting it and being
From: quapla: Tuesday, July 28, 2015 2:22 AM
@Vince
Can you make a '.stp' or '.igs' file of the bracket as shown
in the image 'bracket-screws.jpg' but with straight poles rather
than the 'ball on a stick' version?
I could widen the post to 1/4", so the result would be a post
with a hemispheric
On Tue, Jul 28, 2015 at 11:29 AM, Pete Turnbull
wrote:
>
> No, they're ABS - at least mine are, I just tested a few. I don't know what
> grade, though, and perhaps something more flexible and forgiving - a
> different grade of ABS, semi-rigid PVC, or nylon would be better.
>
> My suggestion, howe
While cleaning up the shop, I found a stockpile (qty: 85) of brand new, in
the plastic wrap,
Carlisle DC300XL/P-600 QIC tapes. They're arranged in one complete case of 50
(subdivided into
boxes of 10, each of which has two smaller boxes of 5). The boss wants
something for them, but
didn't sa
On 28/07/2015 06:10, Arno Kletzander wrote:
metal ball heads with a hex base on threaded posts are available as spares
for R/C cars and similar
Those are ball joints for servo arms, we use them on helicopters too.
But ones I've seen are too small, and I don't think you'd get any with
long en
On 27/07/2015 23:13, Tothwolf wrote:
On Mon, 27 Jul 2015, John Wilson wrote:
The only thing here is, it's a *terrible* design. Those damn nubs
snap off so easily (I'm sure decades of outgassing haven't helped),
even when you're expecting it and being super careful.
Yes, even in the late 70s i
I ran into this looking for something else on ebay:
Digital Constant Voltage Conditioner H7225 item 331591861028
I don't think I ever saw one of these before, were they of any use?
On 2015-07-27 18:51, Vincent Slyngstad wrote:
From: Noel Chiappa: Monday, July 27, 2015 8:58 AM
Time to find someone who can do injection molding... (I don't think
these
could be 3D printed, the necks of the bulb-heads are under a lot of
stress
when removing panels, they often snap off; will 3D
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