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Hi,
I just received my GM811 today and I’ve been setting it up and testing indoors to get familiar (it is, of course, raining here in northern Virginia).
I have everything hooked up (RA and DEC cables, power to gemini, hand controller attached). I have 16V DC going into the gemini box. ? I have my C8 in the saddle and balanced in both axes. ? I power on and run through the quick start procedure and set all the parameters. ? I tried doing some slews from the keypad. Slewing in RA seems to work fine, loudish in my foyer, but fine. ? I next tried to slew in DEC and ... stall. The messages I receive are: DEC: Stall! DEC Heavy Duty Sl. and at least one other I didn't note down and can't reproduce but it may have been something like: DEC Heavy Duty/Lag Sl but I may have that totally wrong. ? Any ideas? I don't see anything in the troubleshooting in and searches haven't turned anything that I can tell is directly relevant. ? Thanks, again for any help!
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Is it possible you are not balanced on the DEC axis? It should be roughly balanced with a little bias towards the camera ? Thanks ? Brian ? ? Brian Valente Brianvalentephotography.com ?
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From: Losmandy_users@... [mailto:Losmandy_users@...]
Sent: Thursday, November 30, 2017 6:30 PM
To: Losmandy_users@...
Subject: [Losmandy_users] DEC stalls on new mount? ? Hi, I just received my GM811 today and I’ve been setting it up and testing indoors to get familiar (it is, of course, raining here in northern Virginia). I have everything hooked up (RA and DEC cables, power to gemini, hand controller attached). I have 16V DC going into the gemini box. ? I have my C8 in the saddle and balanced in both axes. ? I power on and run through the quick start procedure and set all the parameters. ? I tried doing some slews from the keypad. Slewing in RA seems to work fine, loudish in my foyer, but fine. ? I next tried to slew in DEC and ... stall. The messages I receive are: and at least one other I didn't note down and can't reproduce but it may have been something like: but I may have that totally wrong. ? Any ideas? I don't see anything in the troubleshooting in and searches haven't turned anything that I can tell is directly relevant. ? Thanks, again for any help!
|
With the DEC cloth unlocked I can move the OTA around and it holds position (same for RA). The stall is happening immediately. The axis isn’t even beginning to move in either direction. I hear a sound like it’s starting the motor then a beep and the stall messages on the hand controller.
I’m coming from an equatorial fork so GEMs are a bit new to me but I think I have it balanced properly.
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Show quoted text
Is it possible you are not balanced on the DEC axis? It should be roughly balanced with a little bias towards the camera ? Thanks ? Brian ? ? Brian Valente
? ? ?? Hi, I just received my GM811 today and I’ve been setting it up and testing indoors to get familiar (it is, of course, raining here in northern Virginia). I have everything hooked up (RA and DEC cables, power to gemini, hand controller attached). I have 16V DC going into the gemini box. ? I have my C8 in the saddle and balanced in both axes. ? I power on and run through the quick start procedure and set all the parameters. ? I tried doing some slews from the keypad. Slewing in RA seems to work fine, loudish in my foyer, but fine. ? I next tried to slew in DEC and ... stall. The messages I receive are: and at least one other I didn't note down and can't reproduce but it may have been something like: but I may have that totally wrong. ? Any ideas? I don't see anything in the troubleshooting in??and searches haven't turned anything that I can tell is directly relevant. ? Thanks, again for any help!
|
not sure what that first sentence means? your clutches should be hand tightened so it can still be moved by hand but is stiff.?
double-check all your motor cable connections too
B
On Thu, Nov 30, 2017 at 6:35 PM, Linda Thomas-Fowler linda@... [Losmandy_users] <Losmandy_users@...> wrote:
?
With the DEC cloth unlocked I can move the OTA around and it holds position (same for RA). The stall is happening immediately. The axis isn’t even beginning to move in either direction. I hear a sound like it’s starting the motor then a beep and the stall messages on the hand controller.
I’m coming from an equatorial fork so GEMs are a bit new to me but I think I have it balanced properly.
Linda
Is it possible you are not balanced on the DEC axis? It should be roughly balanced with a little bias towards the camera ? Thanks ? Brian ? ? Brian Valente
? ? ?? Hi, I just received my GM811 today and I’ve been setting it up and testing indoors to get familiar (it is, of course, raining here in northern Virginia). I have everything hooked up (RA and DEC cables, power to gemini, hand controller attached). I have 16V DC going into the gemini box. ? I have my C8 in the saddle and balanced in both axes. ? I power on and run through the quick start procedure and set all the parameters. ? I tried doing some slews from the keypad. Slewing in RA seems to work fine, loudish in my foyer, but fine. ? I next tried to slew in DEC and ... stall. The messages I receive are: and at least one other I didn't note down and can't reproduce but it may have been something like: but I may have that totally wrong. ? Any ideas? I don't see anything in the troubleshooting in??and searches haven't turned anything that I can tell is directly relevant. ? Thanks, again for any help!
-- Brian?
Brian Valente portfolio
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Sorry, that should have said:?
With the DEC clutch loose, not sure how autocorrect turned clutch into cloth.
I’ve tried reseating the cables. All seems correct. Someone on Cloudy Nights suggested that it should like the worm is too tight and said there is a video that shows how to adjust it, but I am not sure which video that is. Can anyone point me at the appropriate procedure?
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Show quoted text
not sure what that first sentence means? your clutches should be hand tightened so it can still be moved by hand but is stiff.?
double-check all your motor cable connections too
B
|
Linda ? Here are a few things: ? What kind of setup do you have, and is it heavy? ? You will probably get a lot of advice and some of it conflicting. I personally recommend not fiddling with the hardware until you have tried everything else. The chances of a) it showing up new as so tight the Dec won’t move is low and b) you have a better chance at your current stage of making it worse. ? When you say it doesn’t move at all, do you literally mean it doesn’t even start or try it just errors out? a tight worm would probably at least give the motors a push ? You should have your Dec clutch solidly hand-tight, never loose when you are slewing or operating your mount. ? ? Thanks ? Brian ? ? Brian Valente Brianvalentephotography.com ?
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From: Losmandy_users@... [mailto:Losmandy_users@...]
Sent: Friday, December 1, 2017 2:39 AM
To: Losmandy_users@...
Subject: Re: [Losmandy_users] DEC stalls on new mount? ? Sorry, that should have said:? With the DEC clutch loose, not sure how autocorrect turned clutch into cloth. I’ve tried reseating the cables. All seems correct. Someone on Cloudy Nights suggested that it should like the worm is too tight and said there is a video that shows how to adjust it, but I am not sure which video that is. Can anyone point me at the appropriate procedure?
? not sure what that first sentence means? your clutches should be hand tightened so it can still be moved by hand but is stiff.? double-check all your motor cable connections too ? On Thu, Nov 30, 2017 at 6:35 PM, Linda Thomas-Fowler?linda@...?[Losmandy_users]?<Losmandy_users@...>?wrote: ? With the DEC cloth unlocked I can move the OTA around and it holds position (same for RA). The stall is happening immediately. The axis isn’t even beginning to move in either direction. I hear a sound like it’s starting the motor then a beep and the stall messages on the hand controller. I’m coming from an equatorial fork so GEMs are a bit new to me but I think I have it balanced properly. Linda
? Is it possible you are not balanced on the DEC axis? It should be roughly balanced with a little bias towards the camera ? Thanks ? Brian ? ? Brian Valente
? ? ?? Hi, I just received my GM811 today and I’ve been setting it up and testing indoors to get familiar (it is, of course, raining here in northern Virginia). I have everything hooked up (RA and DEC cables, power to gemini, hand controller attached). I have 16V DC going into the gemini box. I have my C8 in the saddle and balanced in both axes. I power on and run through the quick start procedure and set all the parameters. I tried doing some slews from the keypad. Slewing in RA seems to work fine, loudish in my foyer, but fine. I next tried to slew in DEC and ... stall. The messages I receive are: and at least one other I didn't note down and can't reproduce but it may have been something like: but I may have that totally wrong. Any ideas? I don't see anything in the troubleshooting in??and searches haven't turned anything that I can tell is directly relevant. Thanks, again for any help!
?
--?
?
|
Currently it’s just a C8 with top and bottom dovetail rails. Since it was indoors ?and just being set up to get familiar, there wasn’t even a diagonal or eyepiece or camera. So, probably 17 pounds total.
When I press the keypad, I hear a sound like the motor spinning up for a fraction of a second, then the keypad beeps and the error messages show up. The DEC axis doesn’t move at all. It?
The clutches are tight. typos courtesy of iPad
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On Dec 1, 2017, at 11:09 AM, 'Brian Valente' bvalente@... [Losmandy_users] < Losmandy_users@...> wrote:
?
Linda ? Here are a few things: ? What kind of setup do you have, and is it heavy? ? You will probably get a lot of advice and some of it conflicting. I personally recommend not fiddling with the hardware until you have tried everything else. The chances of a) it showing up new as so tight the Dec won’t move is low and b) you have a better chance at your current stage of making it worse. ? When you say it doesn’t move at all, do you literally mean it doesn’t even start or try it just errors out? a tight worm would probably at least give the motors a push ? You should have your Dec clutch solidly hand-tight, never loose when you are slewing or operating your mount. ? ? Thanks ? Brian ? ? Brian Valente
? ? ? Sorry, that should have said:? With the DEC clutch loose, not sure how autocorrect turned clutch into cloth. I’ve tried reseating the cables. All seems correct. Someone on Cloudy Nights suggested that it should like the worm is too tight and said there is a video that shows how to adjust it, but I am not sure which video that is. Can anyone point me at the appropriate procedure?
? not sure what that first sentence means? your clutches should be hand tightened so it can still be moved by hand but is stiff.? double-check all your motor cable connections too ? On Thu, Nov 30, 2017 at 6:35 PM, Linda Thomas-Fowler?linda@...?[Losmandy_users]?<Losmandy_users@...>?wrote: ? With the DEC cloth unlocked I can move the OTA around and it holds position (same for RA). The stall is happening immediately. The axis isn’t even beginning to move in either direction. I hear a sound like it’s starting the motor then a beep and the stall messages on the hand controller. I’m coming from an equatorial fork so GEMs are a bit new to me but I think I have it balanced properly. Linda
? Is it possible you are not balanced on the DEC axis? It should be roughly balanced with a little bias towards the camera ? Thanks ? Brian ? ? Brian Valente
? ? ?? Hi, I just received my GM811 today and I’ve been setting it up and testing indoors to get familiar (it is, of course, raining here in northern Virginia). I have everything hooked up (RA and DEC cables, power to gemini, hand controller attached). I have 16V DC going into the gemini box. I have my C8 in the saddle and balanced in both axes. I power on and run through the quick start procedure and set all the parameters. I tried doing some slews from the keypad. Slewing in RA seems to work fine, loudish in my foyer, but fine. I next tried to slew in DEC and ... stall. The messages I receive are: and at least one other I didn't note down and can't reproduce but it may have been something like: but I may have that totally wrong. Any ideas? I don't see anything in the troubleshooting in??and searches haven't turned anything that I can tell is directly relevant. Thanks, again for any help!
?
--?
?
|
You might attempt to switch hand unit to Move or Center speed and see if you can move the Dec at all. ? ? it will go really slowly so you’ll have to watch closely ? ? ? ? Thanks ? Brian ? ? Brian Valente Brianvalentephotography.com ?
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From: Losmandy_users@... [mailto:Losmandy_users@...]
Sent: Friday, December 1, 2017 8:35 AM
To: Losmandy_users@...
Subject: Re: [Losmandy_users] DEC stalls on new mount? ? Currently it’s just a C8 with top and bottom dovetail rails. Since it was indoors ?and just being set up to get familiar, there wasn’t even a diagonal or eyepiece or camera. So, probably 17 pounds total. When I press the keypad, I hear a sound like the motor spinning up for a fraction of a second, then the keypad beeps and the error messages show up. The DEC axis doesn’t move at all. It? The clutches are tight. ? Linda ? Here are a few things: ? What kind of setup do you have, and is it heavy? ? You will probably get a lot of advice and some of it conflicting. I personally recommend not fiddling with the hardware until you have tried everything else. The chances of a) it showing up new as so tight the Dec won’t move is low and b) you have a better chance at your current stage of making it worse. ? When you say it doesn’t move at all, do you literally mean it doesn’t even start or try it just errors out? a tight worm would probably at least give the motors a push ? You should have your Dec clutch solidly hand-tight, never loose when you are slewing or operating your mount. ? ? Thanks ? Brian ? ? Brian Valente
? ? ? Sorry, that should have said:? With the DEC clutch loose, not sure how autocorrect turned clutch into cloth. I’ve tried reseating the cables. All seems correct. Someone on Cloudy Nights suggested that it should like the worm is too tight and said there is a video that shows how to adjust it, but I am not sure which video that is. Can anyone point me at the appropriate procedure?
? not sure what that first sentence means? your clutches should be hand tightened so it can still be moved by hand but is stiff.? double-check all your motor cable connections too ? On Thu, Nov 30, 2017 at 6:35 PM, Linda Thomas-Fowler?linda@...?[Losmandy_users]?<Losmandy_users@...>?wrote: ? With the DEC cloth unlocked I can move the OTA around and it holds position (same for RA). The stall is happening immediately. The axis isn’t even beginning to move in either direction. I hear a sound like it’s starting the motor then a beep and the stall messages on the hand controller. I’m coming from an equatorial fork so GEMs are a bit new to me but I think I have it balanced properly. Linda
? Is it possible you are not balanced on the DEC axis? It should be roughly balanced with a little bias towards the camera ? Thanks ? Brian ? ? Brian Valente
? ? ?? Hi, I just received my GM811 today and I’ve been setting it up and testing indoors to get familiar (it is, of course, raining here in northern Virginia). I have everything hooked up (RA and DEC cables, power to gemini, hand controller attached). I have 16V DC going into the gemini box. I have my C8 in the saddle and balanced in both axes. I power on and run through the quick start procedure and set all the parameters. I tried doing some slews from the keypad. Slewing in RA seems to work fine, loudish in my foyer, but fine. I next tried to slew in DEC and ... stall. The messages I receive are: and at least one other I didn't note down and can't reproduce but it may have been something like: but I may have that totally wrong. Any ideas? I don't see anything in the troubleshooting in??and searches haven't turned anything that I can tell is directly relevant. Thanks, again for any help!
?
--?
?
|
Also try swapping RA and Dec cables (same ports, just use your RA cable for the Dec and vice versa). See if it could be a bad cable thing ? Thanks ? Brian ? ? Brian Valente Brianvalentephotography.com ?
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From: Losmandy_users@... [mailto:Losmandy_users@...]
Sent: Friday, December 1, 2017 8:35 AM
To: Losmandy_users@...
Subject: Re: [Losmandy_users] DEC stalls on new mount? ? Currently it’s just a C8 with top and bottom dovetail rails. Since it was indoors ?and just being set up to get familiar, there wasn’t even a diagonal or eyepiece or camera. So, probably 17 pounds total. When I press the keypad, I hear a sound like the motor spinning up for a fraction of a second, then the keypad beeps and the error messages show up. The DEC axis doesn’t move at all. It? The clutches are tight. ? Linda ? Here are a few things: ? What kind of setup do you have, and is it heavy? ? You will probably get a lot of advice and some of it conflicting. I personally recommend not fiddling with the hardware until you have tried everything else. The chances of a) it showing up new as so tight the Dec won’t move is low and b) you have a better chance at your current stage of making it worse. ? When you say it doesn’t move at all, do you literally mean it doesn’t even start or try it just errors out? a tight worm would probably at least give the motors a push ? You should have your Dec clutch solidly hand-tight, never loose when you are slewing or operating your mount. ? ? Thanks ? Brian ? ? Brian Valente
? ? ? Sorry, that should have said:? With the DEC clutch loose, not sure how autocorrect turned clutch into cloth. I’ve tried reseating the cables. All seems correct. Someone on Cloudy Nights suggested that it should like the worm is too tight and said there is a video that shows how to adjust it, but I am not sure which video that is. Can anyone point me at the appropriate procedure?
? not sure what that first sentence means? your clutches should be hand tightened so it can still be moved by hand but is stiff.? double-check all your motor cable connections too ? On Thu, Nov 30, 2017 at 6:35 PM, Linda Thomas-Fowler?linda@...?[Losmandy_users]?<Losmandy_users@...>?wrote: ? With the DEC cloth unlocked I can move the OTA around and it holds position (same for RA). The stall is happening immediately. The axis isn’t even beginning to move in either direction. I hear a sound like it’s starting the motor then a beep and the stall messages on the hand controller. I’m coming from an equatorial fork so GEMs are a bit new to me but I think I have it balanced properly. Linda
? Is it possible you are not balanced on the DEC axis? It should be roughly balanced with a little bias towards the camera ? Thanks ? Brian ? ? Brian Valente
? ? ?? Hi, I just received my GM811 today and I’ve been setting it up and testing indoors to get familiar (it is, of course, raining here in northern Virginia). I have everything hooked up (RA and DEC cables, power to gemini, hand controller attached). I have 16V DC going into the gemini box. I have my C8 in the saddle and balanced in both axes. I power on and run through the quick start procedure and set all the parameters. I tried doing some slews from the keypad. Slewing in RA seems to work fine, loudish in my foyer, but fine. I next tried to slew in DEC and ... stall. The messages I receive are: and at least one other I didn't note down and can't reproduce but it may have been something like: but I may have that totally wrong. Any ideas? I don't see anything in the troubleshooting in??and searches haven't turned anything that I can tell is directly relevant. Thanks, again for any help!
?
--?
?
|
I’ll give your suggestions a try when I get home later this afternoon. Thanks! typos courtesy of iPad
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On Dec 1, 2017, at 11:39 AM, 'Brian Valente' bvalente@... [Losmandy_users] < Losmandy_users@...> wrote:
?
Also try swapping RA and Dec cables (same ports, just use your RA cable for the Dec and vice versa). See if it could be a bad cable thing ? Thanks ? Brian ? ? Brian Valente
? ? ? Currently it’s just a C8 with top and bottom dovetail rails. Since it was indoors ?and just being set up to get familiar, there wasn’t even a diagonal or eyepiece or camera. So, probably 17 pounds total. When I press the keypad, I hear a sound like the motor spinning up for a fraction of a second, then the keypad beeps and the error messages show up. The DEC axis doesn’t move at all. It? The clutches are tight. ? Linda ? Here are a few things: ? What kind of setup do you have, and is it heavy? ? You will probably get a lot of advice and some of it conflicting. I personally recommend not fiddling with the hardware until you have tried everything else. The chances of a) it showing up new as so tight the Dec won’t move is low and b) you have a better chance at your current stage of making it worse. ? When you say it doesn’t move at all, do you literally mean it doesn’t even start or try it just errors out? a tight worm would probably at least give the motors a push ? You should have your Dec clutch solidly hand-tight, never loose when you are slewing or operating your mount. ? ? Thanks ? Brian ? ? Brian Valente
? ? ? Sorry, that should have said:? With the DEC clutch loose, not sure how autocorrect turned clutch into cloth. I’ve tried reseating the cables. All seems correct. Someone on Cloudy Nights suggested that it should like the worm is too tight and said there is a video that shows how to adjust it, but I am not sure which video that is. Can anyone point me at the appropriate procedure?
? not sure what that first sentence means? your clutches should be hand tightened so it can still be moved by hand but is stiff.? double-check all your motor cable connections too ? On Thu, Nov 30, 2017 at 6:35 PM, Linda Thomas-Fowler?linda@...?[Losmandy_users]?<Losmandy_users@...>?wrote: ? With the DEC cloth unlocked I can move the OTA around and it holds position (same for RA). The stall is happening immediately. The axis isn’t even beginning to move in either direction. I hear a sound like it’s starting the motor then a beep and the stall messages on the hand controller. I’m coming from an equatorial fork so GEMs are a bit new to me but I think I have it balanced properly. Linda
? Is it possible you are not balanced on the DEC axis? It should be roughly balanced with a little bias towards the camera ? Thanks ? Brian ? ? Brian Valente
? ? ?? Hi, I just received my GM811 today and I’ve been setting it up and testing indoors to get familiar (it is, of course, raining here in northern Virginia). I have everything hooked up (RA and DEC cables, power to gemini, hand controller attached). I have 16V DC going into the gemini box. I have my C8 in the saddle and balanced in both axes. I power on and run through the quick start procedure and set all the parameters. I tried doing some slews from the keypad. Slewing in RA seems to work fine, loudish in my foyer, but fine. I next tried to slew in DEC and ... stall. The messages I receive are: and at least one other I didn't note down and can't reproduce but it may have been something like: but I may have that totally wrong. Any ideas? I don't see anything in the troubleshooting in??and searches haven't turned anything that I can tell is directly relevant. Thanks, again for any help!
?
--?
?
|
Linda,
I think you are right...the instant stall means the worm is probably too tight against the ring gear.??
Try Brian's idea of swapping the cables first...? if that doesn't change the problem...
Videos are nice, but as this GM811 mount has just been released I didn't see a video dedicated to it's new design.? Look for any video on the GM8 or G11 worm adjustment.? You will recognize the mounting bolts and how to do the adjustment.?
In words....
The adjustment bolts for the worm to ring gear spacing are two very large silvery stainless steel bolts, just under the worm gear housing.? Facing the front of the mount, the left bolt, hidden under the motor+gearbox on the GM811, acts as a pivot point.? You may have to slightly loosen that to allow the worm mount bracket to pivot.? The bolt on the right side allows you to actually rotate the worm away from the ring gear by swinging that point outward using the left bolt pivot point..??
If you don't already have them, you'll need some tools for that.? For the stainless holding bolts, you will need the right size hex key wrench.? Because the mount uses a range of US sized bolts, I find best to get a full set of US sized "Allen" Hex key wrenches... hardware stores sell nice sets of these from like 0.050 inch up in a plastic slip holder.? ?The wrenches with a rounded tip on the long end help access at an angle.??
The second tool you need is a set of car spark plug feeler gauges...flat metal pieces of different thickness printed on them.? (The "step-type" feeler gauges can help, but just flat ones will work too.)? Those calibrated thin metal gauges give you?a calibrated way to get just the right spacing so the worm can move, yet eliminate any extra ring gear rotational slop....its a tradeoff you have to try. (You can add the gauge strips back to back if needed to measure larger spacings.)
After measuring the existing (too tight, stalled) spacing with feeler gauges, you will loosen the right underneath bolt slightly and move the worm toward the front, away from the ring gear.? Place a slightly thicker feeler gauge in place of the one that measured too tight, and tighten the bolts again.? Try your DEC motor again and see if you still get Stall or Lag warnings.? You must try some spacings and see which is the smallest one that gets rid of the Stall and possible Lag warnings.??
That's it.? You can make your own video and get famous on YouTube.
Michael?
?
Sorry, that should have said:?
With the DEC clutch loose, not sure how autocorrect turned clutch into cloth.
I’ve tried reseating the cables. All seems correct. Someone on Cloudy Nights suggested that it should like the worm is too tight and said there is a video that shows how to adjust it, but I am not sure which video that is. Can anyone point me at the appropriate procedure?
not sure what that first sentence means? your clutches should be hand tightened so it can still be moved by hand but is stiff.?
double-check all your motor cable connections too
B
|
Thanks, Michael! The mount came with a set of Allen wrenches but if by chance, the right size isn’t there I have a full set of SAE and metric wrenches. I’m certain I don’t have the spark plug feeler gauges because until I read your email I’d never heard of them. :) typos courtesy of iPad
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On Dec 1, 2017, at 2:00 PM, Michael Herman mherman346@... [Losmandy_users] < Losmandy_users@...> wrote:
?
Linda,
I think you are right...the instant stall means the worm is probably too tight against the ring gear.??
Try Brian's idea of swapping the cables first...? if that doesn't change the problem...
Videos are nice, but as this GM811 mount has just been released I didn't see a video dedicated to it's new design.? Look for any video on the GM8 or G11 worm adjustment.? You will recognize the mounting bolts and how to do the adjustment.?
In words....
The adjustment bolts for the worm to ring gear spacing are two very large silvery stainless steel bolts, just under the worm gear housing.? Facing the front of the mount, the left bolt, hidden under the motor+gearbox on the GM811, acts as a pivot point.? You may have to slightly loosen that to allow the worm mount bracket to pivot.? The bolt on the right side allows you to actually rotate the worm away from the ring gear by swinging that point outward using the left bolt pivot point..??
If you don't already have them, you'll need some tools for that.? For the stainless holding bolts, you will need the right size hex key wrench.? Because the mount uses a range of US sized bolts, I find best to get a full set of US sized "Allen" Hex key wrenches... hardware stores sell nice sets of these from like 0.050 inch up in a plastic slip holder.? ?The wrenches with a rounded tip on the long end help access at an angle.??
The second tool you need is a set of car spark plug feeler gauges...flat metal pieces of different thickness printed on them.? (The "step-type" feeler gauges can help, but just flat ones will work too.)? Those calibrated thin metal gauges give you?a calibrated way to get just the right spacing so the worm can move, yet eliminate any extra ring gear rotational slop....its a tradeoff you have to try. (You can add the gauge strips back to back if needed to measure larger spacings.)
After measuring the existing (too tight, stalled) spacing with feeler gauges, you will loosen the right underneath bolt slightly and move the worm toward the front, away from the ring gear.? Place a slightly thicker feeler gauge in place of the one that measured too tight, and tighten the bolts again.? Try your DEC motor again and see if you still get Stall or Lag warnings.? You must try some spacings and see which is the smallest one that gets rid of the Stall and possible Lag warnings.??
That's it.? You can make your own video and get famous on YouTube.
Michael?
|
you will soon be tuning up Losmandy mounts and spark plugs like a champ!
Michael?
On Dec 1, 2017 11:44 AM, "Linda Thomas-Fowler linda@... [Losmandy_users]" < Losmandy_users@...> wrote:
?
Thanks, Michael! The mount came with a set of Allen wrenches but if by chance, the right size isn’t there I have a full set of SAE and metric wrenches. I’m certain I don’t have the spark plug feeler gauges because until I read your email I’d never heard of them. :)
typos courtesy of iPad
?
Linda,
I think you are right...the instant stall means the worm is probably too tight against the ring gear.??
Try Brian's idea of swapping the cables first...? if that doesn't change the problem...
Videos are nice, but as this GM811 mount has just been released I didn't see a video dedicated to it's new design.? Look for any video on the GM8 or G11 worm adjustment.? You will recognize the mounting bolts and how to do the adjustment.?
In words....
The adjustment bolts for the worm to ring gear spacing are two very large silvery stainless steel bolts, just under the worm gear housing.? Facing the front of the mount, the left bolt, hidden under the motor+gearbox on the GM811, acts as a pivot point.? You may have to slightly loosen that to allow the worm mount bracket to pivot.? The bolt on the right side allows you to actually rotate the worm away from the ring gear by swinging that point outward using the left bolt pivot point..??
If you don't already have them, you'll need some tools for that.? For the stainless holding bolts, you will need the right size hex key wrench.? Because the mount uses a range of US sized bolts, I find best to get a full set of US sized "Allen" Hex key wrenches... hardware stores sell nice sets of these from like 0.050 inch up in a plastic slip holder.? ?The wrenches with a rounded tip on the long end help access at an angle.??
The second tool you need is a set of car spark plug feeler gauges...flat metal pieces of different thickness printed on them.? (The "step-type" feeler gauges can help, but just flat ones will work too.)? Those calibrated thin metal gauges give you?a calibrated way to get just the right spacing so the worm can move, yet eliminate any extra ring gear rotational slop....its a tradeoff you have to try. (You can add the gauge strips back to back if needed to measure larger spacings.)
After measuring the existing (too tight, stalled) spacing with feeler gauges, you will loosen the right underneath bolt slightly and move the worm toward the front, away from the ring gear.? Place a slightly thicker feeler gauge in place of the one that measured too tight, and tighten the bolts again.? Try your DEC motor again and see if you still get Stall or Lag warnings.? You must try some spacings and see which is the smallest one that gets rid of the Stall and possible Lag warnings.??
That's it.? You can make your own video and get famous on YouTube.
Michael?
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I ran through the procedure on the Losmandy video and it’s working now! It may not be optimal but it is working.
Once I looked at the unit in better light it was obvious which two screws were needed to get the motor off. However, the screw that was on the side facing the shaft was, um, a
Thanks to everyone who helped! It was very much appreciated. If you are ever in northern Virginia, let me know and a beverage of your choice is on tap!
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you will soon be tuning up Losmandy mounts and spark plugs like a champ!
Michael?
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Michael Herman