23 Jun
2015
23 Jun
'15
10:59 p.m.
Can anyone recommend suitable rotary switches for either the A (vertical)
or B (angled) configuration?
On Tue, Jun 23, 2015 at 7:16 PM, Rod Smallwood <
rodsmallwood52 at btinternet.com> wrote:
Hi Guys
I am off to Friedrichshafen for a few days and will be back
on 1-JUL-2015.
The next two batches of front panels will be:
8/e Type A
1. Old switch position markings (1 and 6 vertical)
2. Line around switch Area
3. Vertical lines between groups of three lamps
4. Holes for switch shaft and lock predrilled
8/e Type B
1. New switch position markings (1 and 6 angled)
2. Line around switch Area
3. Vertical lines between groups of three lamps
4. Holes for switch shaft and lock predrilled
Price as before
$95.00 + $15.00 Shipping
Rod Smallwood
24 Jun
24 Jun
4:21 a.m.
Try Vince Slyngstad
On 24/06/2015 06:59, Paul Birkel wrote:
Can anyone recommend suitable rotary switches for
either the A (vertical)
or B (angled) configuration?
On Tue, Jun 23, 2015 at 7:16 PM, Rod Smallwood <
rodsmallwood52 at btinternet.com> wrote:
> Hi Guys
> I am off to Friedrichshafen for a few days and will be back
> on 1-JUL-2015.
>
> The next two batches of front panels will be:
>
> 8/e Type A
>
> 1. Old switch position markings (1 and 6 vertical)
>
> 2. Line around switch Area
>
> 3. Vertical lines between groups of three lamps
>
> 4. Holes for switch shaft and lock predrilled
>
>
> 8/e Type B
>
> 1. New switch position markings (1 and 6 angled)
>
> 2. Line around switch Area
>
> 3. Vertical lines between groups of three lamps
>
> 4. Holes for switch shaft and lock predrilled
>
> Price as before
>
>
> $95.00 + $15.00 Shipping
>
> Rod Smallwood
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1:35 p.m.
From: Paul Birke: Tuesday, June 23, 2015 10:59 PM
Can anyone recommend suitable rotary switches for
either the A (vertical)
or B (angled) configuration?
Unfortunately I don't have any leads on a modern equivalent.
(Just the fairly useless DEC part numbers.)
The construction is dead simple, though. Essentially, mine are
a set of reed switches mounted at 36 degree intervals, a couple
of end plates, and a central shaft with a magnet on it. Some
detents which make the shaft tend to want to stay where you
put it. The newer ones presumably used an angle of 30 degrees
instead of 36.
It's probably achievable to create something with a 3D printer
and some modern reed switches that would fit the original form
factor.
Vince
2:28 p.m.
On Wednesday, June 24, 2015 1:35 PM, Vincent Slyngstad <v.slyngstad at frontier.com>
wrote:
From: Paul Birke: Tuesday, June 23, 2015 10:59 PM
Can anyone recommend suitable rotary switches for
either the A (vertical)
or B (angled) configuration?
Unfortunately I don't have any leads on a modern equivalent.
(Just the fairly useless DEC part numbers.)
The construction is dead simple, though.? Essentially, mine are
a set of reed switches mounted at 36 degree intervals, a couple
of end plates, and a central shaft with a magnet on it.? Some
detents which make the shaft tend to want to stay where you
put it.? The newer ones presumably used an angle of 30 degrees
instead of 36.
It's probably achievable to create something with a 3D printer
and some modern reed switches that would fit the original form
factor.
? ? Vince?
My 8/e had the reed switched based one which had broken reeds and a weak magnet.I replaced
the reeds with small one found on ebay and also the magnet to get it working.It has a
sloppy feel to it.
My 8/m has a mechanical switch. It has a much nicer feel than the reed based one.Probably
the different way the panels are marked is because of these two ways of makinga rotary
switch.
I have no idea why DEC made their own switch out of the reeds. Seems like it would cost
more than a standard switch so they probably had a reason. Possibly they thought it would
not wear as much with thereeds having millions of operations rating.
-Bob
2:39 p.m.
From: Bob Rosenbloom: Wednesday, June 24, 2015 2:28 PM
I have no idea why DEC made their own switch out of
the reeds. Seems like it
would cost more than a standard switch so they probably had a reason. Possibly
they thought it would not wear as much with thereeds having millions of
operations rating.
I'm not sure they made their own. There's "Angley" or some such
written
around the corner from the DEC part number on the bottom plate. (Partially
obscured by the mounting screw.) I took that to be a maker's mark, though
I didn't find any surviving reference to them online.
Vince
3469
days inactive
3469
days old
4 comments
4 participants
participants (4)
-
bobalan＠sbcglobal.net -
pbirkel＠gmail.com -
rodsmallwood52＠btinternet.com -
v.slyngstad＠frontier.com