What could cause this?

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bigfish
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What could cause this?

#1

Post by bigfish »


Hello,
I'm having this problem where the motor will monetarily stop working and then start again. When it stops it makes a grinding sound. Anyone else having this problem? What's happening. :(

Redcat 51, Orion 8"x1000mm Reflector, ASI183MC Pro, ASI533MC Pro, ASI462MC, ASI120 Mini, SVBONY SV106 Guide Scope, ZWO Mini Guide Scope, Skywatcher EQ6 Pro, Sky view Pro.
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Re: What could cause this?

#2

Post by Lady Fraktor »


If you turn the slew rate lower does it still make the sound?
It sounds like there are worn gear teeth or loose/ skipping gears inside.

If it is still under warranty send your video to Orion Tech Support, do not open it without their say our you could likely void your warranty.
See Far Sticks: Antares Elita 103/1575, AOM FLT 105/1000, Bresser BV 127/1200, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS100/1000, Vixen SD115s/885
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Re: What could cause this?

#3

Post by bigfish »


Thanks for the reply.
Do you think a grossly unbalanced telescope could cause it?
I played with the mount for hours yesterday without the scope on it and could not reproduce the sound. I'm going to try today with the scope on it. I think it may be my fault for not balancing.
What would happen with a higher end mount if the scope was really out of balance?
Redcat 51, Orion 8"x1000mm Reflector, ASI183MC Pro, ASI533MC Pro, ASI462MC, ASI120 Mini, SVBONY SV106 Guide Scope, ZWO Mini Guide Scope, Skywatcher EQ6 Pro, Sky view Pro.
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Re: What could cause this?

#4

Post by yobbo89 »


that's sound i've never heard before haha, ahh is the steper motor one of those systems with a gear box attached to it?


what mount is this ?
scopes :gso/bintel f4 12"truss tube, bresser messier ar127s /skywatcher 10'' dob,meade 12'' f10 lx200 sct
cameras : asi 1600mm-c/asi1600mm-c,asi120mc,prostar lp guidecam, nikkon d60, sony a7,asi 290 mm
mounts : eq6 pro/eq8/mesu 200 v2
filters : 2'' astronomik lp/badder lrgb h-a,sII,oIII,h-b,Baader Solar Continuum, chroma 3nm ha,sii,oiii,nii,rgb,lowglow,uv/ir,Thousand Oaks Solar Filter,1.25'' #47 violet,pro planet 742 ir,pro planet 807 ir,pro planet 642 bp ir.
extras : skywatcher f4 aplanatic cc, Baader MPCC MKIII Coma Corrector,Orion Field Flattener,zwo 1.25''adc.starlight maxi 2" 9x filter wheel,tele vue 2x barlow .

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Re: What could cause this?

#5

Post by yobbo89 »


bigfish wrote: Sun Oct 18, 2020 3:18 pm What would happen with a higher end mount if the scope was really out of balance?
the motor stalls , the sound is less of a grind noise but more of a clunk,clunk,clunk.. yours sounds like it's chirping pretty loud even for a motor stall. makes me think that's theres balance problem,or a tight spot on the worm wheel which is causing load on the steper motor gear reduction box if it has one .. too much clacking for a stepper to a gear cog to a worm .

it may even be just a bearing
scopes :gso/bintel f4 12"truss tube, bresser messier ar127s /skywatcher 10'' dob,meade 12'' f10 lx200 sct
cameras : asi 1600mm-c/asi1600mm-c,asi120mc,prostar lp guidecam, nikkon d60, sony a7,asi 290 mm
mounts : eq6 pro/eq8/mesu 200 v2
filters : 2'' astronomik lp/badder lrgb h-a,sII,oIII,h-b,Baader Solar Continuum, chroma 3nm ha,sii,oiii,nii,rgb,lowglow,uv/ir,Thousand Oaks Solar Filter,1.25'' #47 violet,pro planet 742 ir,pro planet 807 ir,pro planet 642 bp ir.
extras : skywatcher f4 aplanatic cc, Baader MPCC MKIII Coma Corrector,Orion Field Flattener,zwo 1.25''adc.starlight maxi 2" 9x filter wheel,tele vue 2x barlow .

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Re: What could cause this?

#6

Post by KathyNS »


Balance problems will certainly cause weird noises, erratic motor behaviour, and, ultimately, mount failure.

Always, always balance the rig. If you are in a desperate hurry, an approximate balance is better than none at all. But the stars aren't going anywhere. Take your time and get it right.
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Re: What could cause this?

#7

Post by Lady Fraktor »


Definitely balance the telescope.
A 200mm newtonian is a lot of telescope for a Skyview Pro to carry in the first place.
Once you do get it balanced I would recommend turning the slew speed down a step or two just to be nice to the motors.
See Far Sticks: Antares Elita 103/1575, AOM FLT 105/1000, Bresser BV 127/1200, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, AXJ, AXD
Az/Alt: AYO Digi II/ Argo Navis, Stellarvue M2C/ Argo Navis
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Takahashi prism, TAL, Vixen flip mirror
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Re: What could cause this?

#8

Post by bigfish »


It seems both motors stop when this happens.😢
I have balanced the scope and it still is happening. It appears the damage is done. 😭
I don't see any slew speed control, only tracking.
https://m.facebook.com/groups/726295037 ... 9101213095
Redcat 51, Orion 8"x1000mm Reflector, ASI183MC Pro, ASI533MC Pro, ASI462MC, ASI120 Mini, SVBONY SV106 Guide Scope, ZWO Mini Guide Scope, Skywatcher EQ6 Pro, Sky view Pro.
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Re: What could cause this?

#9

Post by John Baars »


It seems that slewing speed is set higher than the motors mechanically can.
If the same problem occurs without telescope and counterweights it is obvious.

Can you set the parameters of the motors?
If not slewing should be done no longer than the time it takes for the motors to shudder. Than stop a second and restart slewing.
Refractors in frequency of use : *SW Evostar 120ED F/7.5 (all round ), * Vixen 102ED F/9 (vintage), both on Vixen GPDX.
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Re: What could cause this?

#10

Post by Lady Fraktor »


bigfish wrote: Sun Oct 18, 2020 7:58 pm It seems both motors stop when this happens.😢
I have balanced the scope and it still is happening. It appears the damage is done. 😭
I don't see any slew speed control, only tracking.
https://m.facebook.com/groups/726295037 ... 9101213095
One of the buttons should have RATE on it. Press that and then a number between 1-9.
9 is normally full speed, I would slow it down to 6-7 and check again.
This does not affect tracking speed only slew rate.

I do not use facebook so cannot read your link.
See Far Sticks: Antares Elita 103/1575, AOM FLT 105/1000, Bresser BV 127/1200, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, AXJ, AXD
Az/Alt: AYO Digi II/ Argo Navis, Stellarvue M2C/ Argo Navis
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Takahashi prism, TAL, Vixen flip mirror
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Re: What could cause this?

#11

Post by bigfish »


Yes that does change the rate when I do a manual slew but when I do the go to slew it doesn't seem to affect the speed. I'm talking to Orion tech support right now.
Redcat 51, Orion 8"x1000mm Reflector, ASI183MC Pro, ASI533MC Pro, ASI462MC, ASI120 Mini, SVBONY SV106 Guide Scope, ZWO Mini Guide Scope, Skywatcher EQ6 Pro, Sky view Pro.
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Re: What could cause this?

#12

Post by Shabadoo »


Oh no. I have an Svp 8 as well.
I’ve run into the same problem before. I’m thinking same as the posters before me.
Balance, tighten things up.
I would add watch the cables at all times when slewing, keeping one thumb above the “esc” button to prevent yanks and motor stress.
Keep speed down.
I hope yours isn’t too badly damaged.
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Re: What could cause this?

#13

Post by ARock »


bigfish wrote: Sun Oct 18, 2020 7:58 pm It seems both motors stop when this happens.😢
This would suggest some kind of an electrical problem/overheating with the controller. Are you running off batteries or a mains power source? Check for fluctuating voltages if you can.

This person seems to have a similar problem

https://www.cloudynights.com/topic/7313 ... both-axes/
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Scopes: Zhumell Z8, Meade Adventure 80mm, Bushnell 1300x100 Goto Mak.
Mount: ES EXOS Nano EQ Mount, DIY Arduino+Stepper drives.
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Re: What could cause this?

#14

Post by bigfish »


I'm running it with a 12v 2.5a power source. Ive tried different power supplies with the same results.
Last month my hand controller and control box died. Orion replaced them and now it is making this noise. :think:
I'm wondering now if the motors had anything to do with the controller box dying?
I think I discovered that it only makes this noise when both motors are working together.
Redcat 51, Orion 8"x1000mm Reflector, ASI183MC Pro, ASI533MC Pro, ASI462MC, ASI120 Mini, SVBONY SV106 Guide Scope, ZWO Mini Guide Scope, Skywatcher EQ6 Pro, Sky view Pro.
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Re: What could cause this?

#15

Post by ARock »


Does the hand controller display anything when the pause happens?

https://www.cloudynights.com/topic/5372 ... ed-resets/
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Scopes: Zhumell Z8, Meade Adventure 80mm, Bushnell 1300x100 Goto Mak.
Mount: ES EXOS Nano EQ Mount, DIY Arduino+Stepper drives.
AP: 50mm guidescope, AR0130 based guidecam, Canon T3i, UHC filter.
EPs: ES82 18,11,6.7mm, Zhumell 30,9mm FJ Ortho 9mm, assorted plossls, Meade 2x S-F Barlow, DGM NPB filter.
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Re: What could cause this?

#16

Post by bigfish »


ARock wrote: Fri Oct 23, 2020 4:02 am Does the hand controller display anything when the pause happens?

https://www.cloudynights.com/topic/5372 ... ed-resets/
I'll have to check but I don't think so.
Redcat 51, Orion 8"x1000mm Reflector, ASI183MC Pro, ASI533MC Pro, ASI462MC, ASI120 Mini, SVBONY SV106 Guide Scope, ZWO Mini Guide Scope, Skywatcher EQ6 Pro, Sky view Pro.
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Re: What could cause this?

#17

Post by bigfish »


Here is an update: Not Good. :(
After several emails to Orion, support sent me a new Dec motor. I'm still have the same problem.
I think it's the new hand controller or motor control box they sent me when the original die. I have totally disassembled the mount, cleaned, painstakingly inspected the gears and greased it. The mount is working perfectly.
Has anyone ever seen this before? I've spent more time troubleshooting this problem than using the telescope.
Here is a video.
Redcat 51, Orion 8"x1000mm Reflector, ASI183MC Pro, ASI533MC Pro, ASI462MC, ASI120 Mini, SVBONY SV106 Guide Scope, ZWO Mini Guide Scope, Skywatcher EQ6 Pro, Sky view Pro.
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