Date   

Re: Problem with first startup of Mach2 -- obstruction / grinding sound

DFisch
 

Checking under the hood is a great recommendation but I would probably stay away from kicking the tires

On Thu, Mar 4, 2021 at 20:01 Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:

is there anything us new mount owners should check after unpacking
Normally nothing to check. However, if you are curious, the motor boxes have covers that can be removed and you can watch the motors doing their thing. We have always encouraged people to remove the covers to see how things work under the hood.

Rolando


-----Original Message-----
From: Jeffc <jeffcrilly@...>
To: main@ap-gto.groups.io
Sent: Thu, Mar 4, 2021 4:36 pm
Subject: Re: [ap-gto] Problem with first startup of Mach2 -- obstruction / grinding sound

Roland -- thx for the detailed explanation.  

Apparently I must have tightened only two of the 4 and left the other two loose.

I'm just wondering.. is there anything us new mount owners should check after unpacking and before powering up?   Sorta like a final QA?
(Mach2 is scheduled to arrive monday.)

thx
-jeff

On Thu, Mar 4, 2021 at 10:13 AM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
hello All,

With the help of our mount owner we found the problem. He was able to locate the obstruction on the gear teeth by removing the grease cover on the side of the mount that exposes the worm gear teeth. There was a tiny washer that had worked its way into the gear teeth. Two screws had vibrated loose, probably during shipping, and fallen into the gearbox along with their washers.

This is entirely my fault since i do all the final assembly and testing of the Mach2 mounts. One of the final things I do is to adjust the belt tension, and this requires loosening the 4 screws holding the motor in place. Apparently I must have tightened only two of the 4 and left the other two loose. Murphy's law states that any loose screws will always loosen more and fall out to jam up the gears. The corollary is that they will only tighten up if that causes the machinery to jam. I will change my procedure based on this unfortunate occurrence in order to prevent this from happening again.

Roland
(donning dunce hat of shame Disappointed)


--
Roland Christen
Astro-Physics

--
TJF MOBILE


Re: Problem with first startup of Mach2 -- obstruction / grinding sound

Roland Christen
 


is there anything us new mount owners should check after unpacking
Normally nothing to check. However, if you are curious, the motor boxes have covers that can be removed and you can watch the motors doing their thing. We have always encouraged people to remove the covers to see how things work under the hood.

Rolando


-----Original Message-----
From: Jeffc <jeffcrilly@...>
To: main@ap-gto.groups.io
Sent: Thu, Mar 4, 2021 4:36 pm
Subject: Re: [ap-gto] Problem with first startup of Mach2 -- obstruction / grinding sound

Roland -- thx for the detailed explanation.  

Apparently I must have tightened only two of the 4 and left the other two loose.

I'm just wondering.. is there anything us new mount owners should check after unpacking and before powering up?   Sorta like a final QA?
(Mach2 is scheduled to arrive monday.)

thx
-jeff

On Thu, Mar 4, 2021 at 10:13 AM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
hello All,

With the help of our mount owner we found the problem. He was able to locate the obstruction on the gear teeth by removing the grease cover on the side of the mount that exposes the worm gear teeth. There was a tiny washer that had worked its way into the gear teeth. Two screws had vibrated loose, probably during shipping, and fallen into the gearbox along with their washers.

This is entirely my fault since i do all the final assembly and testing of the Mach2 mounts. One of the final things I do is to adjust the belt tension, and this requires loosening the 4 screws holding the motor in place. Apparently I must have tightened only two of the 4 and left the other two loose. Murphy's law states that any loose screws will always loosen more and fall out to jam up the gears. The corollary is that they will only tighten up if that causes the machinery to jam. I will change my procedure based on this unfortunate occurrence in order to prevent this from happening again.

Roland
(donning dunce hat of shame Disappointed)


--
Roland Christen
Astro-Physics


Re: How to Re-grease a Mach1 with Auto-Adjust Motor Boxes?

fernandorivera3
 

+1

I agree 100% on the stuff you mentioned regarding this process.

Fernando


Weights for 40 pound load on ap1100?

Tom Blahovici
 

Got my notification today! What are the weights needed for ax40 pound load on a ap1100?
Thanks!


Re: Problem with first startup of Mach2 -- obstruction / grinding sound

Jeffc
 

Roland -- thx for the detailed explanation.  

Apparently I must have tightened only two of the 4 and left the other two loose.

I'm just wondering.. is there anything us new mount owners should check after unpacking and before powering up?   Sorta like a final QA?
(Mach2 is scheduled to arrive monday.)

thx
-jeff


On Thu, Mar 4, 2021 at 10:13 AM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
hello All,

With the help of our mount owner we found the problem. He was able to locate the obstruction on the gear teeth by removing the grease cover on the side of the mount that exposes the worm gear teeth. There was a tiny washer that had worked its way into the gear teeth. Two screws had vibrated loose, probably during shipping, and fallen into the gearbox along with their washers.

This is entirely my fault since i do all the final assembly and testing of the Mach2 mounts. One of the final things I do is to adjust the belt tension, and this requires loosening the 4 screws holding the motor in place. Apparently I must have tightened only two of the 4 and left the other two loose. Murphy's law states that any loose screws will always loosen more and fall out to jam up the gears. The corollary is that they will only tighten up if that causes the machinery to jam. I will change my procedure based on this unfortunate occurrence in order to prevent this from happening again.

Roland
(donning dunce hat of shame Disappointed)


Re: Problem with first startup of Mach2 -- obstruction / grinding sound

Roland Christen
 

Not to worry. The 1100 mount is being assembled in normal fashion by the 1100 crew.

Rolando



-----Original Message-----
From: mjb87 via groups.io <mjb87@...>
To: main@ap-gto.groups.io
Sent: Thu, Mar 4, 2021 1:47 pm
Subject: Re: [ap-gto] Problem with first startup of Mach2 -- obstruction / grinding sound

To be clear, as the topic starter, I was very impressed by Roland's direct and detailed engagement in sorting this out. My only fear is that he spent so much time dealing with my emails that he fall behind in 1100GTO production and those on the waiting list will be upset with me :)

--
Roland Christen
Astro-Physics


Re: Problem with first startup of Mach2 -- obstruction / grinding sound

mjb87@...
 

To be clear, as the topic starter, I was very impressed by Roland's direct and detailed engagement in sorting this out. My only fear is that he spent so much time dealing with my emails that he fall behind in 1100GTO production and those on the waiting list will be upset with me :)


Re: Problem with first startup of Mach2 -- obstruction / grinding sound

Eric Weiner
 

Taking ownership is a sign of your character and integrity. Thank you. 


On Mar 4, 2021, at 11:13, Roland Christen via groups.io <chris1011@...> wrote:


hello All,

With the help of our mount owner we found the problem. He was able to locate the obstruction on the gear teeth by removing the grease cover on the side of the mount that exposes the worm gear teeth. There was a tiny washer that had worked its way into the gear teeth. Two screws had vibrated loose, probably during shipping, and fallen into the gearbox along with their washers.

This is entirely my fault since i do all the final assembly and testing of the Mach2 mounts. One of the final things I do is to adjust the belt tension, and this requires loosening the 4 screws holding the motor in place. Apparently I must have tightened only two of the 4 and left the other two loose. Murphy's law states that any loose screws will always loosen more and fall out to jam up the gears. The corollary is that they will only tighten up if that causes the machinery to jam. I will change my procedure based on this unfortunate occurrence in order to prevent this from happening again.

Roland
(donning dunce hat of shame Disappointed)


-----Original Message-----
From: mjb87 via groups.io <mjb87@...>
To: main@ap-gto.groups.io
Sent: Wed, Mar 3, 2021 11:55 am
Subject: Re: [ap-gto] Problem with first startup of Mach2 -- obstruction / grinding sound

I've installed APCC Pro. Daleen was kind enough to resend me the license key. The software is up and running. I notice that it thought I was using my 1100 and wonder if I still have deleted the earlier data.

The Dec axis works fine -- no issues. The RA axis hits the stop (sort of a "raspberry" sound) as it starts to move west from Park 3. Moving east is fine -- only happens when I move west.  However, if I then release the clutches and move the mount, say, 15 degrees further west, it "moves" the point at which the conflict occurs further along. I've done that repeatedly and can now move the mount from counterweight bar up on one side to counterweight bar up on the other. I still get the conflict but it is now at a point where I don't plan to send the mount.

--
Roland Christen
Astro-Physics


Re: Problem with first startup of Mach2 -- obstruction / grinding sound

Roland Christen
 

hello All,

With the help of our mount owner we found the problem. He was able to locate the obstruction on the gear teeth by removing the grease cover on the side of the mount that exposes the worm gear teeth. There was a tiny washer that had worked its way into the gear teeth. Two screws had vibrated loose, probably during shipping, and fallen into the gearbox along with their washers.

This is entirely my fault since i do all the final assembly and testing of the Mach2 mounts. One of the final things I do is to adjust the belt tension, and this requires loosening the 4 screws holding the motor in place. Apparently I must have tightened only two of the 4 and left the other two loose. Murphy's law states that any loose screws will always loosen more and fall out to jam up the gears. The corollary is that they will only tighten up if that causes the machinery to jam. I will change my procedure based on this unfortunate occurrence in order to prevent this from happening again.

Roland
(donning dunce hat of shame Disappointed)


-----Original Message-----
From: mjb87 via groups.io <mjb87@...>
To: main@ap-gto.groups.io
Sent: Wed, Mar 3, 2021 11:55 am
Subject: Re: [ap-gto] Problem with first startup of Mach2 -- obstruction / grinding sound

I've installed APCC Pro. Daleen was kind enough to resend me the license key. The software is up and running. I notice that it thought I was using my 1100 and wonder if I still have deleted the earlier data.

The Dec axis works fine -- no issues. The RA axis hits the stop (sort of a "raspberry" sound) as it starts to move west from Park 3. Moving east is fine -- only happens when I move west.  However, if I then release the clutches and move the mount, say, 15 degrees further west, it "moves" the point at which the conflict occurs further along. I've done that repeatedly and can now move the mount from counterweight bar up on one side to counterweight bar up on the other. I still get the conflict but it is now at a point where I don't plan to send the mount.

--
Roland Christen
Astro-Physics


Re: Mach1GTO RA axis sticking

George
 

Keith and Andrew,

 

Email me directly and I can attach instructions.

 

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 Keith Egger
Sent: Thursday, March 4, 2021 11:48 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Mach1GTO RA axis sticking

 

After more than a decade of use, not much grease left on the rotating bearings in both Dec and RA! Put on a thin film of AeroShell 33. Good to get that tended to.

Now for the worm and wheel. Again, are there detailed instructions anywhere? I see re-greasing guides for other mounts on the support site, but not for the Mach1GTO?

thanks, Keith


Re: Mach1GTO RA axis sticking

Keith Egger
 

After more than a decade of use, not much grease left on the rotating bearings in both Dec and RA! Put on a thin film of AeroShell 33. Good to get that tended to.

Now for the worm and wheel. Again, are there detailed instructions anywhere? I see re-greasing guides for other mounts on the support site, but not for the Mach1GTO?

thanks, Keith


Re: APPM for single target #APCC #Mach2GTO

David Johnson
 

Thanks. I’m going to try it tonight. 


Re: APPM for single target #APCC #Mach2GTO

Dean Jacobsen
 

I have had excellent results with doing two and three line APPM map runs which bracket the declination of the target for the night. 

There was a discussion on this last summer - https://ap-gto.groups.io/g/main/topic/point_mapping_strategies_for/74888714?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,600,74888714
--
Dean Jacobsen
http://astrophoto.net/wp/
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/ 
Amateur Radio Call Sign - W6DBJ


How to Re-grease a Mach1 with Auto-Adjust Motor Boxes?

Andrew J
 

Hi All. 

I received the Re-grease Kit for my GTO Mach1 today. I read through the instructions twice, but the steps are still not clear. The document jumps around quite a bit and covers so many different mounts I found it difficult to follow. It talks about Cleaning and Re-greasing the Spur Gears, then the Worm and Worm Wheel and then the Worm Screw Gear... I am not even sure what all these components are as I have never opened up a mount before. I am a little nervous starting this job without understanding exactly what needs to be done, for the same reason I don't take my watch apart. I am afraid I might not be able to put it back together again or miss some critical step in the process.

Is there any additional materials that walks through this process step-by-step, start to finish? Ideally with lots of pictures and a possibly even a schematic that shows what each part is and how they all fit together. There are a few pictures in the document I received, but as I said it covers so many different mounts it is hard to follow. I work on a computer for a living. My mechanical skills are adequate, but I need to clearly understand what I am getting into before I start a project. I can’t tell you how many times I have had to rely on YouTube to figure out how to take something apart, and more important how to put it back together again. Speaking of YouTube, it would be awesome if there was a video that walked through this re-greasing process. I did find this one video on YouTube, but it is for a 1200GTO mount from 2015 and it does not have the Auto-Adjusting gear boxes. Not sure how relevant it would be for a 2016 Mach1 GTO.

Anyway, I just thought I would ask if there are any additional materials or a step-by-step guide on how to complete this job. Any addition guidance for the mechanically limited would be appreciated. 

 

Thanks in advance for the assistance.

 

Andrew J

Edit: Updated to correct typos...


Re: APPM for single target #APCC #Mach2GTO

David Johnson
 

What I’m going to try tonight if I don’t hear anything is the following. My target’s declination is about  +13 degrees.  I plan to densely map points from +10 to +20 Dec all across the sky. 


Re: APPM for single target #APCC #Mach2GTO

Richard Schiek
 

I'm in the same boat.  I don't have a permanent setup so I haven't used APPM as I had hoped.  But being able to build a model around a given object or point the in sky would be very useful to me if it improves tracking accuracy. 

Rich


Re: Mach1GTO RA axis sticking

Roland Christen
 

Yes, you can grease with Aeroshell 33, but make sure it does not contain sulfur. Sulfur corrodes bronze and brass gears.
The top of the mount comes off and you can then grease all parts of the clutch assembly. Easy-peasy.

Roland


-----Original Message-----
From: Keith Egger <eggerk@...>
To: main@ap-gto.groups.io
Sent: Thu, Mar 4, 2021 10:27 am
Subject: Re: [ap-gto] Mach1GTO RA axis sticking

Yes, I've had it a while! Yes, original gear box with the two allen head screws for adjustment of the gear mesh. Still a great mount though - a workhorse.

Do you have instructions for greasing the top rotating bearing? I would probably want to re-grease the worm and wheel at the same time. Is the AeroShell 33 ok to use for both?

Keith

--
Roland Christen
Astro-Physics


Re: APPM for single target #APCC #Mach2GTO

David Johnson
 

Thanks for the info. My concern is what would happen outside the modeled area. As someone who has done models myself in a different area, I just want to make sure there are not extrapolation errors outside the modeled area. I might need to slew to those areas for some reason. Bottom line is I assume the correction is zero outside the modeled area?


Re: Mach1GTO RA axis sticking

Keith Egger
 

Yes, I've had it a while! Yes, original gear box with the two allen head screws for adjustment of the gear mesh. Still a great mount though - a workhorse.

Do you have instructions for greasing the top rotating bearing? I would probably want to re-grease the worm and wheel at the same time. Is the AeroShell 33 ok to use for both?

Keith


Re: APPM for single target #APCC #Mach2GTO

Worsel
 

David

There have been posts in the post showing that building a model along the declinaton of the single object works well.  See lengthy thread at https://ap-gto.groups.io/g/main/topic/77675005

In addition, Ray Gralak is working on an upgrade to APPC Pro that will include declination-arc tracking that is very accurate.  I defer to Ray for further info on timing for this.

Bryan

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