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Re: Ovision worm upgrade problem


Sep 9, 2014

 


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#54604 Sep 9, 2014

Hi, Ihave a new G-11 Gemini II mount and have upgraded to the Ovision worm gear. Ihave installed the gear and I am getting around 4mm of play at the counterweightshaft (they recommend 1-2mm). I cant seem to get it any closer. When I move thecounterweight shaft back and forth the Ovision worm gear is actually moving inthe housing back and forth. Is this right? I thought the worm gear would betight in the housing with very little back and forth play. This is my first timechanging one of these gears so maybe I am doing something wrong. Any help isappreciated. Thanks, Jim



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#54605 Sep 9, 2014

Hi Jim,

I installed Ovision worm on my G11 couple of years back and could set it with ~ 1-2 mm play as mentioned..I do not think the worm from Ovision is supposed to move back and forth inside the housing, at least mine didn't..May be you could check with Ovision for this issue.

Regards,Nilesh Desai



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#54606 Sep 10, 2014

If I remember correctly, it has been a while since I've had mine apart. There are a couple of set screws that push against the bearing in the worm block to take up end play of the worm. Just don't make them to tight or the bearing will not spin smooth.��Chuck

---------- Original Message ----------From: "'Jim' atwaterkent@... [Losmandy_users]" Losmandy_users@yahoogroups.com>To: losmandy_users@yahoogroups.com>Subject: [Losmandy_users] Ovision worm upgrade problemDate: Tue, 9 Sep 2014 21:05:51 -0400

��Hi, I have a new G-11 Gemini II mount and have upgraded to the Ovision worm gear. I have installed the gear and I am getting around 4mm of play at the counterweight shaft (they recommend 1-2mm). I cant seem to get it any closer. When I move the counterweight shaft back and forth the Ovision worm gear is actually moving in the housing back and forth. Is this right? I thought the worm gear would be tight in the housing with very little back and forth play. This is my first time changing one of these gears so maybe I am doing something wrong. Any help is appreciated. Thanks, Jim



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#54607 Sep 10, 2014

Sorry I meant to say threaded end piece that pushes against the bearing, not set screws.

Chuck



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#54608 Sep 10, 2014

Thanks guys for your help. Is there anyone out there who has adjusted theend cap on the Ovision block to reduce side to side play? I am not sure I shouldtouch it. I appreciate any help. Thanks, Jim��From: mailto:Losmandy_users@yahoogroups.comSent: Wednesday, September 10, 2014 6:45 AMTo: Losmandy_users@yahoogroups.comSubject: [SPAM]Re: [Losmandy_users] Ovision worm upgradeproblem



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#54609 Sep 10, 2014

When I first got mine a couple of years ago it needed to be tightened up, there was too much end play like you are seeing. I tightened it up until the bearings started to feel rough then backed the adjustment off slightly so there was no roughness or end to end movement.

Chuck



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#54610 Sep 10, 2014

Thanks Chuck, that.s what I needed to hear. I will try it this weekend.Appreciate your help.�� Jim��From: mailto:Losmandy_users@yahoogroups.comSent: Wednesday, September 10, 2014 7:43 PMTo: Losmandy_users@yahoogroups.comSubject: [SPAM]Re: [SPAM]Re: [Losmandy_users] Ovision worm upgradeproblem



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#54612 Sep 12, 2014

Hi Jim I have my Ovision worm as well from just a few days ago. Ed told me to get it as tight as possible without binding. The first night I had mine out I could not get it to track, and then I called Ed who always does hypertuned services and that's the info he gave me. So I retightened and was able to do 2 minute unguided subs with perfect round stars.�������� I may try to get it tighter if possibleDon Curry



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#54613 Sep 12, 2014

Hi Don,

What please was the focal length of your scope when you did 2 minute unguided images that produced nice round stars?

John



On Saturday, September 13, 2014 12:40 AM, "don123donxyz@... [Losmandy_users]" Losmandy_users@yahoogroups.com> wrote:

��Hi Jim I have my Ovision worm as well from just a few days ago. Ed told me to get it as tight as possible without binding. The first night I had mine out I could not get it to track, and then I called Ed who always does hypertuned services and that's the info he gave me. So I retightened and was able to do 2 minute unguided subs with perfect round stars.�������� I may try to get it tighter if possibleDon Curry



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#54614 Sep 13, 2014

That.s great Don, thanks for letting me know. I will adjust it today. Whatwas the focal length of the scope you used to get 2 minute subs? Thanks again,Jim��From: mailto:Losmandy_users@yahoogroups.comSent: Friday, September 12, 2014 12:40 PMTo: Losmandy_users@yahoogroups.comSubject: [SPAM][Losmandy_users] Re: Ovision worm upgradeproblem



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#54615 Sep 14, 2014

I am using a hyperstar at 520mm�� F2, instead of my native F10 2850mm on my Celestron C11



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#54630 Sep 21, 2014

������������������������ UPDATE���� I'm up to 3 minutes 30 seconds unguided now with perfect round stars with The Ovision worm, and could not be happier with the upgrade .



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#54631 Sep 22, 2014

Hi, what's your f.l that you have there?

Sent from my iPhone

On Sep 22, 2014, at 2:05 AM, "don123donxyz@... [Losmandy_users]" Losmandy_users@yahoogroups.com> wrote:



�������������������������� UPDATE���� I'm up to 3 minutes 30 seconds unguided now with perfect round stars with The Ovision worm, and could not be happier with the upgrade .



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#54632 Sep 22, 2014

Hi Joe, focal length is 1400mm.��From: mailto:Losmandy_users@yahoogroups.comSent: Monday, September 22, 2014 6:22 AMTo: Losmandy_users@yahoogroups.comSubject: [SPAM]Re: [Losmandy_users] Re: Ovision worm upgradeproblem



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#54633 Sep 22, 2014

That is impressive!

Sent from my iPhone

On Sep 22, 2014, at 7:11 AM, "'Jim' atwaterkent@... [Losmandy_users]" Losmandy_users@yahoogroups.com> wrote:



��Hi Joe, focal length is 1400mm.��From: mailto:Losmandy_users@yahoogroups.comSent: Monday, September 22, 2014 6:22 AMTo: Losmandy_users@yahoogroups.comSubject: [SPAM]Re: [Losmandy_users] Re: Ovision worm upgradeproblem







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#54640 Sep 22, 2014

��I'm at 510mm at F2 with a hyper star and use my laptop as my eyepiece attached to my full spectrum Canon T2i which ��all replaces my secondary mirror.Don Curry



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