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tommax
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Reged: 02/15/13

Loc: WI
Zero image shift focuser replacement gear?
      #5740471 - 03/18/13 11:04 AM Attachment (36 downloads)

Hi,

Anyone know where I could round up a replacement gear for the Meade #07080 Zero Image shift focuser? I called Meade and had my usual luck with that... they don't sell parts... would be a shame to toss a $250 focuser over a .25 plastic gear... Attached is an image of what I am looking for, the little white plastic gear.

Thanks!


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tim57064
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Reged: 08/23/12

Loc: Southeast South Dakota,USA
Re: Zero image shift focuser replacement gear? new [Re: tommax]
      #5741604 - 03/18/13 08:08 PM

Try astro parts outlet. www.astronomy-mall.com/astro.parts.outlet/ He has quite a number of parts. Call and ask him.

Edited by tim57064 (03/18/13 08:10 PM)


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tommax
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Reged: 02/15/13

Loc: WI
Re: Zero image shift focuser replacement gear? [Re: tim57064]
      #5741685 - 03/18/13 08:37 PM

just called him... no luck.

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Lorence
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Reged: 09/15/08

Re: Zero image shift focuser replacement gear? [Re: tommax]
      #5741725 - 03/18/13 08:53 PM Attachment (16 downloads)

Google your brains out. I went looking for some machine parts and found all sorts of sites selling small gears and doing custom machining for a reasonable price.

jonsavelle@yahoo.com made some brass components for me. Send him an email.


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tommax
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Reged: 02/15/13

Loc: WI
Re: Zero image shift focuser replacement gear? [Re: Lorence]
      #5741804 - 03/18/13 09:30 PM

Thanks for the suggestion, I have been trying google and have seen plenty that look like it but I don't really know the size or gear count so if someone here knew that or possible had a part number that would have been far better than me guessing at it. Really would be nice to get more help / aid from the MFG though...

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nitegeezer
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Reged: 11/27/07

Re: Zero image shift focuser replacement gear? [Re: tommax]
      #5742028 - 03/18/13 11:16 PM

I can't say the size but looking at the photo I would say there are 17 teeth remaining with the ground of portion being a 2-3-2 so that would make it a 24 tooth gear. There is enough of the teeth left to get a good measure of the diameter and then the only questions are the thickness and the center hole or spline.

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tommax
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Reged: 02/15/13

Loc: WI
Re: Zero image shift focuser replacement gear? [Re: nitegeezer]
      #5742078 - 03/19/13 12:02 AM

Thanks nitegeezer... would be a good name for me... I recently had surgery on my right eye and have been having issues seeing small things, that gets me a bit closer to finding a suitable replacement. I am going to pickup a digital micrometer tomorrow to help me with the width, thickness and spline.

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Digital Don
Carpal Tunnel
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Reged: 01/20/04

Loc: Manteno, IL
Re: Zero image shift focuser replacement gear? [Re: tommax]
      #5742081 - 03/19/13 12:03 AM

Check your local hobby store's R/C section.

Radio controlled cars use various small gears in the drive train. You might just get lucky!

If not, you can find just about any gear here.

Don


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Christopher EricksonModerator
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Loc: Waikoloa Village, Hawaii
Re: Zero image shift focuser replacement gear? [Re: Digital Don]
      #5742182 - 03/19/13 01:59 AM

Maybe try Stock Drive Products.

http://www.sdp-si.com/

I could machine a new one for you from Delrin, aluminum or brass but the labor cost to hand-machine a new gear from raw stock would be several hundred dollars.

Have you asked Meade about getting it repaired if you send it to them?


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tommax
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Reged: 02/15/13

Loc: WI
Re: Zero image shift focuser replacement gear? [Re: Christopher Erickson]
      #5742736 - 03/19/13 11:41 AM

Thanks Christopher,

I called Meade and the person I spoke to did not even know what I was talking about, I never got to the point of speaking about sending it in and they don't sell parts... I don't know how a company can sell things that cost as much as a car or ATV etc but not sell parts... it is a strange policy to me... anyways I am going to do more checking today.


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ahopp
sage


Reged: 05/24/12

Re: Zero image shift focuser replacement gear? [Re: tommax]
      #5743010 - 03/19/13 01:46 PM

I do not believe Ford would sell parts to an individual. You would have to take it to a service center for Ford vehicles.

You can, however, buy parts at an auto-parts store, not affiliated with Ford.

Having said this, I still wish Meade would sell parts.

Tony


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tommax
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Reged: 02/15/13

Loc: WI
Re: Zero image shift focuser replacement gear? [Re: ahopp]
      #5743372 - 03/19/13 04:24 PM

I have purchased parts at my Ford dealer before... don't know about other mfg...

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tommax
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Reged: 02/15/13

Loc: WI
Re: Zero image shift focuser replacement gear? [Re: tommax]
      #5743511 - 03/19/13 05:27 PM Attachment (14 downloads)

Well if anyone who knows more about this, I picked up the digital caliper, It is a cheap one and I am sure it is not 100% accurate but I am posting an image with the sizes I measured in case someone knows where I could order one.

Thanks again.


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OleCuss
member


Reged: 11/22/10

Re: Zero image shift focuser replacement gear? [Re: tommax]
      #5745004 - 03/20/13 12:09 PM

I just want to endorse the idea that you can frequently buy parts for other gear.

You can go into almost any dealership and buy parts for the autos they sell. You just go to the "Parts" counter. If they don't have it, they'll try to order it for you.

You can also go to most farm equipment dealers and do the same.

I find it actually kind of weird that you cannot generally buy certain parts from Meade. Especially since you at least used to be able to buy certain other "parts".

I bought a 497 hand box/controller from Meade a while back. You could not find it in a catalog of any kind because it was considered a "part" so you had to call them and order it. It was the cheapest way to buy that 497.


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nitegeezer
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Reged: 11/27/07

Re: Zero image shift focuser replacement gear? [Re: OleCuss]
      #5745077 - 03/20/13 12:47 PM

I don't think these comparisons are fair. I can't count the number of auto dealers in the area, but I know I have to drive at least 400 miles to get to a good astronomy store with any brand of equipment. In addition, there are after market auto parts stores everywhere.

There is not a large market for parts otherwise the after market people would have jumped in. If there is not enough to support an after market company that could support multiple brands, how can we expect a company parts program that supports only one brand could survive. I would like Meade to sell parts also, but I understand the huge commitment that a parts program requires. I hope they can achieve a sufficient profit to stay in business without a parts program.


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flintzis
newbie


Reged: 11/24/09

Loc: Cyprus (Europe)
Zero image shift focuser replacement gear? new [Re: nitegeezer]
      #5745283 - 03/20/13 02:34 PM Attachment (14 downloads)

Hey there Tom,

I have checked the thread you posted here and went through my parts bin. I have
a couple of gears from the gearbox of the RA drive of an ETX-90EC. It did seem
to match, and I even went through the trouble of taking my own micro focuser
apart to have a look at the gear and compare it to the one I have as a spare. It
does fit onto the axle, and the measurements are the exact same as those on the
cloudy nights thread. However, there are gears onto the axle just as they appear
on the picture I am now posting on the cloudy nights thread. Guess with a
little bit of modification it could fit your microfocuser. I really don't know
how it attaches to the microfocuser shaft, but to tell you the truth I did not
want to go further into disassembling mine as I may end up in a most unfortunate
position. You can have the gear for free, just send me a private message with
your address and I will post it out to you.

Phivos



Edited by flintzis (03/20/13 02:37 PM)


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flintzis
newbie


Reged: 11/24/09

Loc: Cyprus (Europe)
Re: Zero image shift focuser replacement gear? new [Re: flintzis]
      #5745293 - 03/20/13 02:38 PM Attachment (19 downloads)

And another picture

Edited by flintzis (03/20/13 02:38 PM)


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nitegeezer
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Reged: 11/27/07

Re: Zero image shift focuser replacement gear? new [Re: flintzis]
      #5745312 - 03/20/13 02:51 PM

I have been wondering how that gear was used as it did appear that the center was smooth on the shaft. With a gear on the back side it makes total sense as this gear would not need splines, it just floats on the axle. If the one on the focuser is also a double gear, it looks like this would provide a simple gear reduction of 1.5:1.

Good Luck


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tommax
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Reged: 02/15/13

Loc: WI
Re: Zero image shift focuser replacement gear? new [Re: nitegeezer]
      #5745406 - 03/20/13 03:32 PM

nitegeezer,

here is an image of how it all goes together. The shaft in the image is the motor shaft.

flintzis,

Thanks! for the offer- PM sent.


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tommax
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Reged: 02/15/13

Loc: WI
Re: Zero image shift focuser replacement gear? new [Re: tommax]
      #5745413 - 03/20/13 03:33 PM Attachment (19 downloads)

Sorry forgot to preview to upload image...

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