Date   

Re: eDrawing for Mach2? Shorter CW shaft option?

Walt Cooney
 

It's possible that I may have read the subject line wrong, but just in case, please also put my name in the hat for a drawing of a free Mach 2!

Clearest skies,
Walt

On 3/25/2020 9:13 AM, George wrote:

Kevin,

 

Use the Latitude Dimension Calculator.   Choose the Mach1GTO…dimensions are approximately the same.

https://astro-physics.info/tech_support/mounts/latitude-dimension-calc.xls

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of kjm137
Sent: Wednesday, March 25, 2020 7:15 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] eDrawing for Mach2? Shorter CW shaft option?

 

Hi.  First post here.  I have been patiently awaiting my first A-P mount, the Mach2 GTO, which I order last year.  I understand that I'm in Tolga's first batch of ten.  I suppose that with the IL stay at home order, it could be a while longer before my mount ships.  I am hoping to build a small permanent ROR housing for the mount and imaging gear.  By small I mean imaging only, no getting inside with the scope.  That would be a Tak e-130D hyperbolic astrograph for now.  I'm planning a short pier, and was wondering how short that could be.  My latitude is 18.3 N, so a pretty shallow RA angle.  The scope is quite short, and I am wondering what the sky coverage would be without meridian flips. To start to size the pier and ROR, it would be really helpful if a dumbed-down solid model could be shared, ideally in SolidWorks eDrawing format, with the ability to rotate in RA and Dec.  Three separate STEP files that I could mate to allow rotation in RA and Dec would also work.  I could then add a simple cylinder to represent my scope, and see how it all plays, and begin sizing the ROR.  Is that possible?  Also, it could be that the counterweight shaft length will set the minimum pier height.  Are shorter ones available?

I also have a faint memory that you have some simple mount modeling GUI that would let me see what space is required.  That would be even simpler.  Does this exist?  Thanks.

All the best,

Kevin



Re: eDrawing for Mach2? Shorter CW shaft option?

George
 

You’re most welcome.   Enjoy!

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of kjm137
Sent: Wednesday, March 25, 2020 9:40 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] eDrawing for Mach2? Shorter CW shaft option?

 

Thanks, George! 


Re: eDrawing for Mach2? Shorter CW shaft option?

kjm137
 

Thanks, George! 


Re: eDrawing for Mach2? Shorter CW shaft option?

George
 

Kevin,

 

Use the Latitude Dimension Calculator.   Choose the Mach1GTO…dimensions are approximately the same.

https://astro-physics.info/tech_support/mounts/latitude-dimension-calc.xls

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of kjm137
Sent: Wednesday, March 25, 2020 7:15 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] eDrawing for Mach2? Shorter CW shaft option?

 

Hi.  First post here.  I have been patiently awaiting my first A-P mount, the Mach2 GTO, which I order last year.  I understand that I'm in Tolga's first batch of ten.  I suppose that with the IL stay at home order, it could be a while longer before my mount ships.  I am hoping to build a small permanent ROR housing for the mount and imaging gear.  By small I mean imaging only, no getting inside with the scope.  That would be a Tak e-130D hyperbolic astrograph for now.  I'm planning a short pier, and was wondering how short that could be.  My latitude is 18.3 N, so a pretty shallow RA angle.  The scope is quite short, and I am wondering what the sky coverage would be without meridian flips. To start to size the pier and ROR, it would be really helpful if a dumbed-down solid model could be shared, ideally in SolidWorks eDrawing format, with the ability to rotate in RA and Dec.  Three separate STEP files that I could mate to allow rotation in RA and Dec would also work.  I could then add a simple cylinder to represent my scope, and see how it all plays, and begin sizing the ROR.  Is that possible?  Also, it could be that the counterweight shaft length will set the minimum pier height.  Are shorter ones available?

I also have a faint memory that you have some simple mount modeling GUI that would let me see what space is required.  That would be even simpler.  Does this exist?  Thanks.

All the best,

Kevin


eDrawing for Mach2? Shorter CW shaft option?

kjm137
 

Hi.  First post here.  I have been patiently awaiting my first A-P mount, the Mach2 GTO, which I order last year.  I understand that I'm in Tolga's first batch of ten.  I suppose that with the IL stay at home order, it could be a while longer before my mount ships.  I am hoping to build a small permanent ROR housing for the mount and imaging gear.  By small I mean imaging only, no getting inside with the scope.  That would be a Tak e-130D hyperbolic astrograph for now.  I'm planning a short pier, and was wondering how short that could be.  My latitude is 18.3 N, so a pretty shallow RA angle.  The scope is quite short, and I am wondering what the sky coverage would be without meridian flips. To start to size the pier and ROR, it would be really helpful if a dumbed-down solid model could be shared, ideally in SolidWorks eDrawing format, with the ability to rotate in RA and Dec.  Three separate STEP files that I could mate to allow rotation in RA and Dec would also work.  I could then add a simple cylinder to represent my scope, and see how it all plays, and begin sizing the ROR.  Is that possible?  Also, it could be that the counterweight shaft length will set the minimum pier height.  Are shorter ones available?

I also have a faint memory that you have some simple mount modeling GUI that would let me see what space is required.  That would be even simpler.  Does this exist?  Thanks.

All the best,

Kevin


Re: Lubrication interval

Joe Zeglinski
 

Don,
 
    Lubricants do have a “Best Before” date,  stamped right on their containers, especially the AeroShell (recommended by AP), which has to be reliable for aircraft use – thus the prefix. I assume the AP “grease blend” might be a repackaging, for the very tiny amounts we would normally need.
   
    AeroShell-33 (?) is rated for 4 years by the Transport authority. After that the lubricating oil has separated too much from the heavier grease base, making it too thick for safely operating landing gears. This would also be true for its ... untouched, unused, climate controlled “Shelf Life”, and would require disposal, by orders of the TSB.
 
    Read that somewhere on the SHELL OIL website, or might have been explained to me at the counter,  by the Airline Service Supplies company where I bought my CDN $20 calking tube size of it. I asked why the sales clerk insisted on marking my grease tube with the BATCH DATE  from the large carton they bought for aircraft supply. Safe, ecological Disposal,  can be a bear and certainly a hassle if I were to follow the Transportation Safety Board regulations, since I only used maybe a teaspoon from all that quantity of grease in that container.
 
Joe Z.
 

From: Don Anderson via Groups.Io
Sent: Tuesday, March 24, 2020 11:25 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Lubrication interval
 
Eric
Lubrication intervals are dependant on usage and the environment the mount operates in. Even if the mount is little used and is stored inside, the grease still dries out. I just re greased my lightly used 2009 AP 900 GOTO last year. In hind sight, should have done it years before. Grease and your labour are cheap. Repairs are not!
Don


On Mar 23, 2020, at 8:51 PM, Eric Dreher <ericpdreher@...> wrote:

My Mach1GTO will be three years old in a few months, and has never been lubricated.  Then again, it hasn't been used much in the bad weather we've been experiencing for months.

That said, what is the recommended lubrication interval?  The mount has been stored indoors in a temperature range of 65 to 80 degrees.

Does A-P have a recommended lube kit and where might I find the instructions on how to do this properly?

Thanks for any and all answers.

Eric


Re: Lubrication interval

Steven
 

... and be careful NOT to use Mil-spec Aeroshell (designated with the letter "M"). It has a slight modification in the recipe.

S


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Worsel via Groups.Io <bryancashion@...>
Sent: Tuesday, 24 March 2020 9:40 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Lubrication interval
 
Eric

There have been a few threads on this in the past.

For example,

https://ap-gto.groups.io/g/main/message/59222

Search for secret sauce and for Aeroshell

The former is an A-P product, the latter is a Shell product

I beleive the suggested interval is one to 2 years, but defer to A-P.


Bryan


Re: Lubrication interval

Eric Dreher
 

Thank you, Don.  I thought I remembered A-P having a kit, but wanted to be sure.  And much like a car or truck, time intervals are involved are not related to "mileage", so I figured my mount might be due.  I'll be calling Marj for the kit in a few minutes.

Thanks again.  I appreciate your answer.

Eric


Re: Lubrication interval

Don Anderson
 

Eric
Lubrication intervals are dependant on usage and the environment the mount operates in. Even if the mount is little used and is stored inside, the grease still dries out. I just re greased my lightly used 2009 AP 900 GOTO last year. In hind sight, should have done it years before. Grease and your labour are cheap. Repairs are not!
Don


On Mar 23, 2020, at 8:51 PM, Eric Dreher <ericpdreher@...> wrote:

My Mach1GTO will be three years old in a few months, and has never been lubricated.  Then again, it hasn't been used much in the bad weather we've been experiencing for months.

That said, what is the recommended lubrication interval?  The mount has been stored indoors in a temperature range of 65 to 80 degrees.

Does A-P have a recommended lube kit and where might I find the instructions on how to do this properly?

Thanks for any and all answers.

Eric


Re: Help! I just crashed my new 1100 into my step ladder!

Don Anderson
 

Great news Tyrel!
Don


On Mar 23, 2020, at 10:21 PM, Tyrel Smith <tysmith747@...> wrote:

Thanks Don. I tore in to it after my first post and got if fixed. I did basically what you said. The middle gear has a hex bolt behind it that controls how much it is meshed with the worm gear. Apparently the crash knocked this out of whack and the mesh wasn't happening. The middle gear has holes in it so you can stick an allen key through the gear and loosen that hex bolt to remesh. I just hope I got it tensioned correctly. Sounds normal under slew, but I'm a little concerned about my pec curve. I'll follow up with the A-P folks tomorrow, but for now I'm up and running.
<1100gears.jpg>


Re: Help! I just crashed my new 1100 into my step ladder!

Roland Christen
 


I'm a little concerned about my pec curve.
You will have to re-do your PE curve. It's really quite easy with PEMPro.

Rolando


-----Original Message-----
From: Tyrel Smith <tysmith747@...>
To: main <main@ap-gto.groups.io>
Sent: Mon, Mar 23, 2020 11:21 pm
Subject: Re: [ap-gto] Help! I just crashed my new 1100 into my step ladder!

Thanks Don. I tore in to it after my first post and got if fixed. I did basically what you said. The middle gear has a hex bolt behind it that controls how much it is meshed with the worm gear. Apparently the crash knocked this out of whack and the mesh wasn't happening. The middle gear has holes in it so you can stick an allen key through the gear and loosen that hex bolt to remesh. I just hope I got it tensioned correctly. Sounds normal under slew, but I'm a little concerned about my pec curve. I'll follow up with the A-P folks tomorrow, but for now I'm up and running.


Re: Lubrication interval

Worsel
 

Eric

There have been a few threads on this in the past.

For example,

https://ap-gto.groups.io/g/main/message/59222

Search for secret sauce and for Aeroshell

The former is an A-P product, the latter is a Shell product

I beleive the suggested interval is one to 2 years, but defer to A-P.


Bryan


Re: AP Mount maitenance

Charles Thompson
 

Getting the old grease off and setting the gear meshes properly are the only annoying parts of the process. I think there is a YouTube video of a guy doing it exactly. Just watch that and you are good to go. It's very straight forward.





Thanks,
Charles

Sent from mobile device.


-------- Original message --------
From: sroberts84 <astrobsd@...>
Date: 3/23/20 11:12 PM (GMT-06:00)
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] AP Mount maitenance

Awesome - I was thinking about the same for my AP900-GTO lately..,

Will email George as well...,

Thanks, Chaps..,


On 23/03/2020 20:19, Mike Dodd wrote:
> On 3/23/2020 10:48 PM, Charles Thompson via Groups.Io wrote:
>> I agree, give George at AP a call. He recommended their grease kit for
>> my 900 I had a while back. It comes with two types of grease for the
>> gears and worms.
>
> I bought one back in Augusto, but haven't used it yet. It cost about
> $42.50, and came with two containers of grease, an artist-type paint
> brush, and clear illustrated instructions for how to access the gears
> and apply the grease.
>
--
I've seen things you people wouldn't believe.
Attack ships on fire off the shoulder of Orion. I watched C-beams glitter in the dark near the Tannhauser gate.
All those moments will be lost in time, like tears in rain. Time to die.

Roy Batty (Jan 8th 2016 - Dec 2019)





Re: Help! I just crashed my new 1100 into my step ladder!

Tyrel Smith
 

Thanks Don. I tore in to it after my first post and got if fixed. I did basically what you said. The middle gear has a hex bolt behind it that controls how much it is meshed with the worm gear. Apparently the crash knocked this out of whack and the mesh wasn't happening. The middle gear has holes in it so you can stick an allen key through the gear and loosen that hex bolt to remesh. I just hope I got it tensioned correctly. Sounds normal under slew, but I'm a little concerned about my pec curve. I'll follow up with the A-P folks tomorrow, but for now I'm up and running.


Re: AP Mount maitenance

sroberts84
 

Awesome - I was thinking about the same for my AP900-GTO lately..,

Will email George as well...,

Thanks, Chaps..,

On 23/03/2020 20:19, Mike Dodd wrote:
On 3/23/2020 10:48 PM, Charles Thompson via Groups.Io wrote:
I agree, give George at AP a call. He recommended their grease kit for
my 900 I had a while back. It comes with two types of grease for the
gears and worms.
I bought one back in Augusto, but haven't used it yet. It cost about $42.50, and came with two containers of grease, an artist-type paint brush, and clear illustrated instructions for how to access the gears and apply the grease.
--
I've seen things you people wouldn't believe.
Attack ships on fire off the shoulder of Orion. I watched C-beams glitter in the dark near the Tannhauser gate.
All those moments will be lost in time, like tears in rain. Time to die.

Roy Batty (Jan 8th 2016 - Dec 2019)


Re: AP Mount maitenance

Mike Dodd
 

On 3/23/2020 10:48 PM, Charles Thompson via Groups.Io wrote:
I agree, give George at AP a call. He recommended their grease kit for
my 900 I had a while back. It comes with two types of grease for the
gears and worms.
I bought one back in Augusto, but haven't used it yet. It cost about $42.50, and came with two containers of grease, an artist-type paint brush, and clear illustrated instructions for how to access the gears and apply the grease.

--
Mike

Mike Dodd
Louisa County, Virginia USA
http://astronomy.mdodd.com


Lubrication interval

Eric Dreher
 

My Mach1GTO will be three years old in a few months, and has never been lubricated.  Then again, it hasn't been used much in the bad weather we've been experiencing for months.

That said, what is the recommended lubrication interval?  The mount has been stored indoors in a temperature range of 65 to 80 degrees.

Does A-P have a recommended lube kit and where might I find the instructions on how to do this properly?

Thanks for any and all answers.

Eric


Re: AP Mount maitenance

Charles Thompson
 

I agree, give George at AP a call. He recommended their grease kit for my 900 I had a while back. It's comes with two types of grease for the gears and worms. It's a good kit to have. 


Thanks,
Charles

Sent from mobile device.


-------- Original message --------
From: "Michael Hambrick via Groups.Io" <mike.hambrick@...>
Date: 3/23/20 8:01 AM (GMT-06:00)
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] AP Mount maitenance

Hi Geoff

Try looking on the Astro-Physics web site. They have a lot of information in their Support section. There is a collection of documentation for their legacy products there. I don't know if the 900 mount is there, but that is likely the best place to start.

George at Astro-Physics is also a good source of information.


Best Regards

Michael Hambrick
ARLANXEO
TSR Global Manufacturing Support
PO Box 2000
Orange, TX 77631-2000
Phone: +1 (409) 882-2799
email: mike.hambrick@...


Re: AP Mount maitenance

Don Anderson
 

Geoff
When was the last time you cleaned and re lubed the RA and Dec gear trains. If it has been awhile I would service the gear boxes and worm gears. AP has a very nice grease kit. Maybe Marj can send you one. Everyone other Marj, Rolland and Karen are off because of Covid2.

Don Anderson


On Monday, March 23, 2020, 04:33:41 a.m. MDT, Geoff Smith <ghsmith45@...> wrote:


I have an AP900 Mount which has been in my observatory for quite a few years. Can someone point me to any necessary maintenance procedures I should be doing?


Re: Help! I just crashed my new 1100 into my step ladder!

Don Anderson
 

Tyrel
Take off the nylon gear and and the aluminum gear underneath. Have a look at the small gear underneath the big aluminum gear. Could be that small gear is detached from the larger aluminum one. Might be a set screw is loose. In any case have a look to see what's going on.

Don Anderson


On Monday, March 23, 2020, 07:50:07 p.m. MDT, Tyrel Smith <tysmith747@...> wrote:


Mistakes were made.

Short version, I had a small 3-step kitchen ladder near my scope that I had been up and down a hundred times working on collimation. Tonight I went to fire off a pointing model and forgot about the ladder. The very end of my camera fan housing clipped the top of the ladder and I got a motor stall. I removed the ladder, power cycled, and tried to send it to park 3. Only the dec axis moves, and RA axis made strange sound but didn't budge. I removed to gear box side cover and the motor shaft and middle spur gear are turning when slewing and tracking. But the worm spur gear (the furthest to the left and most inward gear when looking at the gear box) is not being engaged. It seems there is a tiny gear behind and on the shaft of the middle gear that is not engaging the larger worm gear. It is barely making contact as I can hear the gears touching each other as they turn. 

Did I just trash something, or can this be readjusted? Dropbox link to short video. 

https://www.dropbox.com/s/qbouc4u4wu38nlh/Pier%20Crash.MOV?dl=0

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