Date   

Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

Joe Zeglinski
 

    Maybe,  I can somewhat top that,  Don.
 
    First year engineering,  Fortran punched card programs,  on the big fish-bowl machine – an awe inspiring IBM-7094, long before the IBM-360,  and which was the original IBM-7090 upgraded  with something new - a Floating Point Processor.
That was the death knell for the desktop NCR Tabulators. The UofT had the fortune of getting the second IBM-7094 in production,  after NASA got theirs for Project Mercury. The latter’s introduction  is portrayed in the recent movie, “Computing Figures”, which brought back wondrous memories for me.
 
    But I preferred using the undergrad machine, an IBM-1620 with a coffin-sized floating point processor,  we hung over it to get ourselves warmed up on a cold winters morning, Working for the eelier mentioned prof,  even got special permission to actually run it after midnight – my first PC, sort of. Loved to turn off the lab room lights, and enjoy all the Neon Hex-code indicators and control panel switch’s lights flash like a laser show. Wish I had taken a picture. No PC today compares to that thrill and amazing sight, perhaps only beat by the IBM-7094 and IBM-360 light show when running  diagnostics.
 
    Last thing I did with one of my dozen or so  basement Honeywell Minicomputers, was to play an originally PDP-8 programmed,  Christmas Carol,  from the RFI noise generated by the mini’s control panel (specifically)  incandescent bulb, (Arithmetic Overflow flip-flop Indicator), flickering  on & off by program as a portable radio tuned to any off-AM-station frequency , crackled melodically, even 10 feet away,  in unison to the carol. Computing Security wasn’t a concept in those early days.
 
    “Halcion Days” ... of computing,  when computers were new and lots more fun than debug work, after I taught myself computing,  before Computer Science came along,
 
    Thanks for bringing back all the shared memories, guys.   Now back to my bug-free Pickett – wonder why we called its sliding  indicator window a “Cursor”, instead of a “Mouse”, since it really worked  the same way  :-)
 
Joe Z.
 

From: Don Anderson via groups.io
Sent: Friday, March 12, 2021 2:49 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)
 
I did my first programing in Fortran with punch cards on an IBM360.
woe be to the person who dropped their program on the way to class!. Sorting a couple hundred punch cards 10 min before class started was stressful!
 
Don Anderson
 
 
On Friday, March 12, 2021, 11:57:15 a.m. MST, Jeffrey Wolff <jmw2800@...> wrote:
 
 
I had to use a slide rule in high school. I remember my Dad buying a basic four function calculator when I was finishing high school.

I learned about HP calculator's in college and bought 3 different programmable calculators by the time I graduated. My first drafting class was using paper, pencils and a bunch of tools to make lines and circles. Eventually did AutoCAD and digital circuit design.

Started programming computers using punch cards. Eventually got my masters in Computer Science and spent my working life running networks, switches, routers, firewalls, wireless, fiber optics and other stuff to bring the Internet to everybody at the university. Been working at my employer since 1989. We went from 1.5 megabits/second for the whole state higher education network to a pair of 100 gigabit/second Internet2 circuits now.


Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

Don Anderson
 

In hind sight, I found the girls turned and went the other way when we came down the hall. I wonder whyEmoji

Don Anderson


On Friday, March 12, 2021, 11:56:39 a.m. MST, ap@... <ap@...> wrote:


So I am months away from getting my AP mount and thought I would have nothing to contribute to this forum until today.  But here it is.

 

And unlike others, you can see the scars from use on my case.  The HP35 did not come into availability until something like my 3rd year.

 

I will say, however, that I did not find it exactly a chick magnet.  I went to UVa, and it was the very early days of women in the undergraduate program, so they were few enough, but even fewer in the Engineering school.  Even so, I saw no indication the slide rule had any attractive force.


Maybe it was the yellow color.  Did the white work better?

 

Of course, being in the Engineer school the women there had slide rules as well, so that may have affected any behavioral observations.

 

Linwood

 

PS. Isn’t it odd that we all probably had a dozen or more calculators in the interim and I suspect rarely saved them when replaced, but many of us saved the slide rule.  I wonder if my son would even know what it was if he saw it.

 

 


Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

Don Anderson
 

I did my first programing in Fortran with punch cards on an IBM360. 
woe be to the person who dropped their program on the way to class!. Sorting a couple hundred punch cards 10 min before class started was stressful!

Don Anderson


On Friday, March 12, 2021, 11:57:15 a.m. MST, Jeffrey Wolff <jmw2800@...> wrote:


I had to use a slide rule in high school. I remember my Dad buying a basic four function calculator when I was finishing high school. 

I learned about HP calculator's in college and bought 3 different programmable calculators by the time I graduated. My first drafting class was using paper, pencils and a bunch of tools to make lines and circles. Eventually did AutoCAD and digital circuit design.

Started programming computers using punch cards. Eventually got my masters in Computer Science and spent my working life running networks, switches, routers, firewalls, wireless, fiber optics and other stuff to bring the Internet to everybody at the university. Been working at my employer since 1989. We went from 1.5 megabits/second for the whole state higher education network to a pair of 100 gigabit/second Internet2 circuits now.


Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

Jeffrey Wolff
 

I had to use a slide rule in high school. I remember my Dad buying a basic four function calculator when I was finishing high school. 

I learned about HP calculator's in college and bought 3 different programmable calculators by the time I graduated. My first drafting class was using paper, pencils and a bunch of tools to make lines and circles. Eventually did AutoCAD and digital circuit design.

Started programming computers using punch cards. Eventually got my masters in Computer Science and spent my working life running networks, switches, routers, firewalls, wireless, fiber optics and other stuff to bring the Internet to everybody at the university. Been working at my employer since 1989. We went from 1.5 megabits/second for the whole state higher education network to a pair of 100 gigabit/second Internet2 circuits now.


Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

ap@CaptivePhotons.com
 

So I am months away from getting my AP mount and thought I would have nothing to contribute to this forum until today.  But here it is.

 

And unlike others, you can see the scars from use on my case.  The HP35 did not come into availability until something like my 3rd year.

 

I will say, however, that I did not find it exactly a chick magnet.  I went to UVa, and it was the very early days of women in the undergraduate program, so they were few enough, but even fewer in the Engineering school.  Even so, I saw no indication the slide rule had any attractive force.


Maybe it was the yellow color.  Did the white work better?

 

Of course, being in the Engineer school the women there had slide rules as well, so that may have affected any behavioral observations.

 

Linwood

 

PS. Isn’t it odd that we all probably had a dozen or more calculators in the interim and I suspect rarely saved them when replaced, but many of us saved the slide rule.  I wonder if my son would even know what it was if he saw it.

 

 


Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

Don Anderson
 

Yes Joe
anyone under 50 (probably 60) has no idea what were talking about. Think about the things that were built ie Hoover Dam Titanic etc that were all designed using hand calculations and slide rules. What most people don't realize about slide rules was one had to have a good idea what the final answer was while doing the calcs in order to carry the decimal point through the calculation process.

Don Anderson


On Friday, March 12, 2021, 10:28:54 a.m. MST, Joe Zeglinski <j.zeglinski@...> wrote:


Don
 
    Love it – dem’ was the days of real computing, unlimited memory, and engineering hard drive.
Yours looks like the famous, highly desired ...  K & E Log-Log-DeciTrig-Duplex  “slip-stick”. Engineers weren’t really entitled to own one of those, unless they could say that quickly,  with a drink in their hand.
 
    Way cool Pickett man myself – its case,  almost like having it slip into  “Corinthian leather”, but probably just cowhide :-)
 
    K&E rare Bamboo style was fine ... but Pickett’s unique engineering design with its specially chosen Green spectral colour, for easy visibility with bleary eyes when cramming  in the middle of the night, Magnesium alloy with tiny ball bearings at the slide’s ends for high speed computing – engineering heaven. Works on both east and west side of its cursor,  easily finds home position on reboot, even works inverted for the log-log and exponential functions ... and BEST of all ...  never needs  AeroShell-33 relubrication :-)
 
    However, my Radio Astronomy engineering prof, used his Abacus, to prove I didn’t need to always run his 3C-273 strip chart data through the PDP-11. I think his was an 8-Bead, (later called a Byte),  “flip-stick” calculator.
 
Joe Z.
 
 
From: Don Anderson via groups.io
Sent: Friday, March 12, 2021 11:17 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600
 
You mean like this?
 
Don Anderson
 
On Friday, March 12, 2021, 07:57:25 a.m. MST, George <george@...> wrote:
 
Don,

 They were only cool if they were full.   <G>    …but real cool was the slide rule slung from your belt in its case!    Talk about a chick magnet…ah, the old days!

 Regards,

 George

 George Whitney

Astro-Physics, Inc.

 


Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

Joe Zeglinski
 

Don
 
    Love it – dem’ was the days of real computing, unlimited memory, and engineering hard drive.
Yours looks like the famous, highly desired ...  K & E Log-Log-DeciTrig-Duplex  “slip-stick”. Engineers weren’t really entitled to own one of those, unless they could say that quickly,  with a drink in their hand.
 
    Way cool Pickett man myself – its case,  almost like having it slip into  “Corinthian leather”, but probably just cowhide :-)
 
    K&E rare Bamboo style was fine ... but Pickett’s unique engineering design with its specially chosen Green spectral colour, for easy visibility with bleary eyes when cramming  in the middle of the night, Magnesium alloy with tiny ball bearings at the slide’s ends for high speed computing – engineering heaven. Works on both east and west side of its cursor,  easily finds home position on reboot, even works inverted for the log-log and exponential functions ... and BEST of all ...  never needs  AeroShell-33 relubrication :-)
 
    However, my Radio Astronomy engineering prof, used his Abacus, to prove I didn’t need to always run his 3C-273 strip chart data through the PDP-11. I think his was an 8-Bead, (later called a Byte),  “flip-stick” calculator.
 
Joe Z.
 
 

From: Don Anderson via groups.io
Sent: Friday, March 12, 2021 11:17 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600
 
You mean like this?
 
Don Anderson
 
On Friday, March 12, 2021, 07:57:25 a.m. MST, George <george@...> wrote:
 
Don,

 They were only cool if they were full.   <G>    …but real cool was the slide rule slung from your belt in its case!    Talk about a chick magnet…ah, the old days!

 Regards,

 George

 George Whitney

Astro-Physics, Inc.

 


Re: Quick Release Gearbox Modification for Older AP1600

Don Anderson
 

Yes the good old days when one had lots of hair with color!Emoji

Don Anderson


On Friday, March 12, 2021, 09:32:20 a.m. MST, George <george@...> wrote:


Don,

 

<G>   I am VERY impressed.    Oh the memories…just like the one that I had.    Sigh…

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Sent: Friday, March 12, 2021 10:18 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

You mean like this?

 

Don Anderson

 

 

On Friday, March 12, 2021, 07:57:25 a.m. MST, George <george@...> wrote:

 

 

Don,

 

They were only cool if they were full.   <G>    …but real cool was the slide rule slung from your belt in its case!    Talk about a chick magnet…ah, the old days!

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Sent: Thursday, March 11, 2021 6:13 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Pen protectors! Wow that goes back a long ways. i used to wear one every day when I was a TV Technician! Back then I thought they were cool.

 

Don Anderson

 

 

On Thursday, March 11, 2021, 12:43:08 p.m. MST, George <george@...> wrote:

 

 

Rolando,

 

I thought everyone carried a dowel rod in their pen protector…oh, wait…I guess that’s a pencil.     <G>

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Roland Christen via groups.io
Sent: Thursday, March 11, 2021 1:21 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woops, you beat me to it, George. I call it the pencil balance (i don't always have a dowel rod laying around).

 

Rolando

 

 

 

-----Original Message-----
From: George <george@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Mar 11, 2021 1:00 pm
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

Guys,

 

Balance side-to-side setups with a dowel rod on a table and save yourselves the headaches.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Woody Schlom
Sent: Thursday, March 11, 2021 12:55 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Jack,

 

I forgot that you have a side-by-side setup.  Those are a bear to balance.  As I recall, it took me nearly an hour to get my side-by-side solar setup properly balanced in all directions and axis the first time.  And your scopes are so much larger and heavier.

 

But at least the meter is helping.

 

All that said, if I could justify the cost, I’d sure like to get the AP gear-release retrofit kit their “new” mounts have.

 

Woody

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Jack Huerkamp
Sent: Thursday, March 11, 2021 5:53 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woody,

I installed the PowerWerx meter in line with the power supply yesterday and tested balance. Al was fine in RA with equal current draw while moving the mount slowly.  However, when I set the scopes parallel to the ground and moved the mount North-South, the current draw to elevate the scopes was higher than that to lower the scopes.  So I need to correct the balance on the OTAs riding on the mount.  And since I have parallel OTAs, I not only need to check balance on the scopes in the North-South direction, I also have to adjust the parallel dovetail East-West to make sure all imbalance is accounted for.

Thanks for reminding me about the meter.

Jack Huerkamp


--
Roland Christen
Astro-Physics


Re: Quick Release Gearbox Modification for Older AP1600

Bob
 

Marj... I think most of us realize it wont be a cookie cutter mod, but well worth the effort and cost.  Opposed to the cost of a new mount and of course the biggest advantage... a very accurate balance which would alleviate an aweful lot of headaches!...Ive been asking for several years about this possible mod....  sign me up as well.... pleeeeaaassseee!...lol


On Mar 12, 2021, at 10:15 AM, Marj Christen <marj@...> wrote:



Jack and all,

 

The swap out is not an easy one, which is one of the reasons that we have not offered it yet. Yes, many of the components can be reused (motor assembly, worm gear, spur gears), which will reduce the cost. However, it is likely that the mounts will need to return here in order to swap out the components and to ensure accurate assembly.

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Jack Huerkamp
Sent: Friday, March 12, 2021 7:41 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Roland, will this be a simple swap out for current AP1600 owners.  I assume that the existing worm gear would be retained and moved to the new housing for the quick release system.  Any estimate on price and is there a waiting list for this retrofit?

Jack Huerkamp


Re: Quick Release Gearbox Modification for Older AP1600

George
 

Don,

 

<G>   I am VERY impressed.    Oh the memories…just like the one that I had.    Sigh…

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Sent: Friday, March 12, 2021 10:18 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

You mean like this?

 

Don Anderson

 

 

On Friday, March 12, 2021, 07:57:25 a.m. MST, George <george@...> wrote:

 

 

Don,

 

They were only cool if they were full.   <G>    …but real cool was the slide rule slung from your belt in its case!    Talk about a chick magnet…ah, the old days!

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Sent: Thursday, March 11, 2021 6:13 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Pen protectors! Wow that goes back a long ways. i used to wear one every day when I was a TV Technician! Back then I thought they were cool.

 

Don Anderson

 

 

On Thursday, March 11, 2021, 12:43:08 p.m. MST, George <george@...> wrote:

 

 

Rolando,

 

I thought everyone carried a dowel rod in their pen protector…oh, wait…I guess that’s a pencil.     <G>

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Roland Christen via groups.io
Sent: Thursday, March 11, 2021 1:21 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woops, you beat me to it, George. I call it the pencil balance (i don't always have a dowel rod laying around).

 

Rolando

 

 

 

-----Original Message-----
From: George <george@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Mar 11, 2021 1:00 pm
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

Guys,

 

Balance side-to-side setups with a dowel rod on a table and save yourselves the headaches.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Woody Schlom
Sent: Thursday, March 11, 2021 12:55 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Jack,

 

I forgot that you have a side-by-side setup.  Those are a bear to balance.  As I recall, it took me nearly an hour to get my side-by-side solar setup properly balanced in all directions and axis the first time.  And your scopes are so much larger and heavier.

 

But at least the meter is helping.

 

All that said, if I could justify the cost, I’d sure like to get the AP gear-release retrofit kit their “new” mounts have.

 

Woody

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Jack Huerkamp
Sent: Thursday, March 11, 2021 5:53 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woody,

I installed the PowerWerx meter in line with the power supply yesterday and tested balance. Al was fine in RA with equal current draw while moving the mount slowly.  However, when I set the scopes parallel to the ground and moved the mount North-South, the current draw to elevate the scopes was higher than that to lower the scopes.  So I need to correct the balance on the OTAs riding on the mount.  And since I have parallel OTAs, I not only need to check balance on the scopes in the North-South direction, I also have to adjust the parallel dovetail East-West to make sure all imbalance is accounted for.

Thanks for reminding me about the meter.

Jack Huerkamp


--
Roland Christen
Astro-Physics


Re: Quick Release Gearbox Modification for Older AP1600

Don Anderson
 

You mean like this?

Don Anderson


On Friday, March 12, 2021, 07:57:25 a.m. MST, George <george@...> wrote:


Don,

 

They were only cool if they were full.   <G>    …but real cool was the slide rule slung from your belt in its case!    Talk about a chick magnet…ah, the old days!

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Sent: Thursday, March 11, 2021 6:13 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Pen protectors! Wow that goes back a long ways. i used to wear one every day when I was a TV Technician! Back then I thought they were cool.

 

Don Anderson

 

 

On Thursday, March 11, 2021, 12:43:08 p.m. MST, George <george@...> wrote:

 

 

Rolando,

 

I thought everyone carried a dowel rod in their pen protector…oh, wait…I guess that’s a pencil.     <G>

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Roland Christen via groups.io
Sent: Thursday, March 11, 2021 1:21 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woops, you beat me to it, George. I call it the pencil balance (i don't always have a dowel rod laying around).

 

Rolando

 

 

 

-----Original Message-----
From: George <george@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Mar 11, 2021 1:00 pm
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

Guys,

 

Balance side-to-side setups with a dowel rod on a table and save yourselves the headaches.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Woody Schlom
Sent: Thursday, March 11, 2021 12:55 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Jack,

 

I forgot that you have a side-by-side setup.  Those are a bear to balance.  As I recall, it took me nearly an hour to get my side-by-side solar setup properly balanced in all directions and axis the first time.  And your scopes are so much larger and heavier.

 

But at least the meter is helping.

 

All that said, if I could justify the cost, I’d sure like to get the AP gear-release retrofit kit their “new” mounts have.

 

Woody

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Jack Huerkamp
Sent: Thursday, March 11, 2021 5:53 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woody,

I installed the PowerWerx meter in line with the power supply yesterday and tested balance. Al was fine in RA with equal current draw while moving the mount slowly.  However, when I set the scopes parallel to the ground and moved the mount North-South, the current draw to elevate the scopes was higher than that to lower the scopes.  So I need to correct the balance on the OTAs riding on the mount.  And since I have parallel OTAs, I not only need to check balance on the scopes in the North-South direction, I also have to adjust the parallel dovetail East-West to make sure all imbalance is accounted for.

Thanks for reminding me about the meter.

Jack Huerkamp


--
Roland Christen
Astro-Physics


Re: Quick Release Gearbox Modification for Older AP1600

 

Jack and all,

 

The swap out is not an easy one, which is one of the reasons that we have not offered it yet. Yes, many of the components can be reused (motor assembly, worm gear, spur gears), which will reduce the cost. However, it is likely that the mounts will need to return here in order to swap out the components and to ensure accurate assembly.

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Jack Huerkamp
Sent: Friday, March 12, 2021 7:41 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Roland, will this be a simple swap out for current AP1600 owners.  I assume that the existing worm gear would be retained and moved to the new housing for the quick release system.  Any estimate on price and is there a waiting list for this retrofit?

Jack Huerkamp


Re: Quick Release Gearbox Modification for Older AP1600

R Botero
 

I would like to know also; as a new owner of a 1600GTO with original gearboxes, I'm interested.
Thank you

Roberto


Re: Quick Release Gearbox Modification for Older AP1600

George
 

Jack,

 

You’re most welcome.   Enjoy!

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Jack Huerkamp
Sent: Friday, March 12, 2021 7:43 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

George,

Thanks for posting the link.

Jack Huerkamp


Re: Quick Release Gearbox Modification for Older AP1600

thefamily90 Phillips
 

Love it! 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of George <george@...>
Sent: Friday, March 12, 2021 10:00:40 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600
 

Don,

 

They were only cool if they were full.   <G>    …but real cool was the slide rule slung from your belt in its case!    Talk about a chick magnet…ah, the old days!

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Sent: Thursday, March 11, 2021 6:13 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Pen protectors! Wow that goes back a long ways. i used to wear one every day when I was a TV Technician! Back then I thought they were cool.

 

Don Anderson

 

 

On Thursday, March 11, 2021, 12:43:08 p.m. MST, George <george@...> wrote:

 

 

Rolando,

 

I thought everyone carried a dowel rod in their pen protector…oh, wait…I guess that’s a pencil.     <G>

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Roland Christen via groups.io
Sent: Thursday, March 11, 2021 1:21 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woops, you beat me to it, George. I call it the pencil balance (i don't always have a dowel rod laying around).

 

Rolando

 

 

 

-----Original Message-----
From: George <george@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Mar 11, 2021 1:00 pm
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

Guys,

 

Balance side-to-side setups with a dowel rod on a table and save yourselves the headaches.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Woody Schlom
Sent: Thursday, March 11, 2021 12:55 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Jack,

 

I forgot that you have a side-by-side setup.  Those are a bear to balance.  As I recall, it took me nearly an hour to get my side-by-side solar setup properly balanced in all directions and axis the first time.  And your scopes are so much larger and heavier.

 

But at least the meter is helping.

 

All that said, if I could justify the cost, I’d sure like to get the AP gear-release retrofit kit their “new” mounts have.

 

Woody

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Jack Huerkamp
Sent: Thursday, March 11, 2021 5:53 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woody,

I installed the PowerWerx meter in line with the power supply yesterday and tested balance. Al was fine in RA with equal current draw while moving the mount slowly.  However, when I set the scopes parallel to the ground and moved the mount North-South, the current draw to elevate the scopes was higher than that to lower the scopes.  So I need to correct the balance on the OTAs riding on the mount.  And since I have parallel OTAs, I not only need to check balance on the scopes in the North-South direction, I also have to adjust the parallel dovetail East-West to make sure all imbalance is accounted for.

Thanks for reminding me about the meter.

Jack Huerkamp


--
Roland Christen
Astro-Physics


Re: Quick Release Gearbox Modification for Older AP1600

George
 

Don,

 

They were only cool if they were full.   <G>    …but real cool was the slide rule slung from your belt in its case!    Talk about a chick magnet…ah, the old days!

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Sent: Thursday, March 11, 2021 6:13 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Pen protectors! Wow that goes back a long ways. i used to wear one every day when I was a TV Technician! Back then I thought they were cool.

 

Don Anderson

 

 

On Thursday, March 11, 2021, 12:43:08 p.m. MST, George <george@...> wrote:

 

 

Rolando,

 

I thought everyone carried a dowel rod in their pen protector…oh, wait…I guess that’s a pencil.     <G>

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Roland Christen via groups.io
Sent: Thursday, March 11, 2021 1:21 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woops, you beat me to it, George. I call it the pencil balance (i don't always have a dowel rod laying around).

 

Rolando

 

 

 

-----Original Message-----
From: George <george@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Mar 11, 2021 1:00 pm
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

Guys,

 

Balance side-to-side setups with a dowel rod on a table and save yourselves the headaches.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Woody Schlom
Sent: Thursday, March 11, 2021 12:55 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Jack,

 

I forgot that you have a side-by-side setup.  Those are a bear to balance.  As I recall, it took me nearly an hour to get my side-by-side solar setup properly balanced in all directions and axis the first time.  And your scopes are so much larger and heavier.

 

But at least the meter is helping.

 

All that said, if I could justify the cost, I’d sure like to get the AP gear-release retrofit kit their “new” mounts have.

 

Woody

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Jack Huerkamp
Sent: Thursday, March 11, 2021 5:53 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woody,

I installed the PowerWerx meter in line with the power supply yesterday and tested balance. Al was fine in RA with equal current draw while moving the mount slowly.  However, when I set the scopes parallel to the ground and moved the mount North-South, the current draw to elevate the scopes was higher than that to lower the scopes.  So I need to correct the balance on the OTAs riding on the mount.  And since I have parallel OTAs, I not only need to check balance on the scopes in the North-South direction, I also have to adjust the parallel dovetail East-West to make sure all imbalance is accounted for.

Thanks for reminding me about the meter.

Jack Huerkamp


--
Roland Christen
Astro-Physics


Re: Quick Release Gearbox Modification for Older AP1600

Jack Huerkamp
 

George,

Thanks for posting the link.

Jack Huerkamp


Re: Quick Release Gearbox Modification for Older AP1600

Jack Huerkamp
 

Roland, will this be a simple swap out for current AP1600 owners.  I assume that the existing worm gear would be retained and moved to the new housing for the quick release system.  Any estimate on price and is there a waiting list for this retrofit?

Jack Huerkamp


Re: Quick Release Gearbox Modification for Older AP1600

Don Anderson
 

Had one of those too. Still Have it.Ha Ha. Requires no batteries. Never needs to be rebooted!

Don Anderson


On Thursday, March 11, 2021, 05:33:45 p.m. MST, M Hambrick <mhambrick563@...> wrote:


Not to be picky, but they are called pocket protectors, and only the slide rule ranks higher in the engineer's kit.

Mike


Re: Quick Release Gearbox Modification for Older AP1600

M Hambrick
 

Not to be picky, but they are called pocket protectors, and only the slide rule ranks higher in the engineer's kit.

Mike

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