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Equipment Discussions >> Classic Telescopes

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FlashGordan
member
*****

Reged: 12/29/13

Loc: Southern New Jersey
Re: Another RV-6 restoration new [Re: Datapanic]
      #6324068 - 01/20/14 12:36 PM

Quote:

After a little soaking in warm water and borrowing my wife's jar opener thing, I got it the objective cell off the tube. Next, I used my optical spanner wrench to remove the retaining ring. That wrench should be in every classic scope restorer's toolbox, btw!




Where did you get the spanner tool?


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Datapanic
Carpal Tunnel
*****

Reged: 10/17/09

Loc: Tucson, Arizona
Re: Another RV-6 restoration new [Re: FlashGordan]
      #6324114 - 01/20/14 12:59 PM

Quote:

Quote:

After a little soaking in warm water and borrowing my wife's jar opener thing, I got it the objective cell off the tube. Next, I used my optical spanner wrench to remove the retaining ring. That wrench should be in every classic scope restorer's toolbox, btw!




Where did you get the spanner tool?




Look for "Lens Spanner Wrench" on eBay - there are a lot of different kinds. One thing to watch out for is the length of the tips - some of them are pretty short which will prevent them from seating in the ring notches if the ring is to far down inside its housing to reach. You also have to be very careful to not slip and scratch the glass!


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Datapanic
Carpal Tunnel
*****

Reged: 10/17/09

Loc: Tucson, Arizona
Re: Another RV-6 restoration new [Re: FlashGordan]
      #6324137 - 01/20/14 01:06 PM

Quote:

I'm sitting here at work waiting for the FedEx guy to show up and you guys start posting stuff like this. I'm almost to the point of going to hunt the driver down and get my boxes from him. ARRRRRGGGHHHHHHHHH!!!!!!!!!!




Sorry I meant to post the pics in the other, Another RV-6 find - got confused.

Hope yours arrives safely!


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FlashGordan
member
*****

Reged: 12/29/13

Loc: Southern New Jersey
Re: Another RV-6 restoration new [Re: Datapanic]
      #6324584 - 01/20/14 04:54 PM

Quote:

Quote:

I'm sitting here at work waiting for the FedEx guy to show up and you guys start posting stuff like this. I'm almost to the point of going to hunt the driver down and get my boxes from him. ARRRRRGGGHHHHHHHHH!!!!!!!!!!




Sorry I meant to post the pics in the other, Another RV-6 find - got confused.

Hope yours arrives safely!




That's okay Dan. Seeing your pictures just makes me want to get to restoring my scope just that much quicker. Thanks!


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FlashGordan
member
*****

Reged: 12/29/13

Loc: Southern New Jersey
Re: Another RV-6 restoration new [Re: FlashGordan]
      #6327111 - 01/21/14 09:31 PM

Look at what arrived today!!!


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FlashGordan
member
*****

Reged: 12/29/13

Loc: Southern New Jersey
Re: Another RV-6 restoration new [Re: FlashGordan]
      #6327123 - 01/21/14 09:33 PM

Besides the cracked/broken saddle, I found this when I unpacked the OTA.


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FlashGordan
member
*****

Reged: 12/29/13

Loc: Southern New Jersey
Re: Another RV-6 restoration new [Re: FlashGordan]
      #6327143 - 01/21/14 09:40 PM

I also noticed that the saddle was broken and welded on the opposite side as well. The felt on the rings is extremely faded. And the motor looks brand new. I'm slightly worried that it's been replaced lately. This is going to be an interesting restoration.

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Geo31
Pooh-Bah
*****

Reged: 01/28/13

Loc: Kingwood, TX
Re: Another RV-6 restoration new [Re: FlashGordan]
      #6327156 - 01/21/14 09:44 PM

Quote:

Besides the cracked/broken saddle, I found this when I unpacked the OTA.





That won't buff out, but should be easily fixed.


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snork
sage
*****

Reged: 01/27/12

Loc: NE Ohio
Re: Another RV-6 restoration new [Re: Geo31]
      #6327165 - 01/21/14 09:48 PM

The uglier it looks now the more satisfaction you will get when it's done . Definitely fixable.

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FlashGordan
member
*****

Reged: 12/29/13

Loc: Southern New Jersey
Re: Another RV-6 restoration new [Re: snork]
      #6327179 - 01/21/14 09:54 PM

So how would you suggest I fix it? Fiberglass or is Bondo out of the question?

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Geo31
Pooh-Bah
*****

Reged: 01/28/13

Loc: Kingwood, TX
Re: Another RV-6 restoration new [Re: FlashGordan]
      #6327326 - 01/21/14 11:10 PM

Fiberglass.

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Datapanic
Carpal Tunnel
*****

Reged: 10/17/09

Loc: Tucson, Arizona
Re: Another RV-6 restoration new [Re: Geo31]
      #6327349 - 01/21/14 11:24 PM

Yep - fiberglass repair and smooth it out with spotting putty.

Did it come with the original Criterion Finder and ring mount?


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FlashGordan
member
*****

Reged: 12/29/13

Loc: Southern New Jersey
Re: Another RV-6 restoration new [Re: Datapanic]
      #6327694 - 01/22/14 06:52 AM

The finder does say Criterion on it. But how do I tell if it's the original mount?

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Chuck Hards
Post Laureate
*****

Reged: 05/03/10

Loc: The Great Basin
Re: Another RV-6 restoration new [Re: FlashGordan]
      #6327781 - 01/22/14 08:19 AM

I restored an RV-8 tube last year, filled a gaping hole with a fiberglass patch. Worked very well on the phenolic paper tube.

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snork
sage
*****

Reged: 01/27/12

Loc: NE Ohio
Re: Another RV-6 restoration new [Re: Chuck Hards]
      #6327803 - 01/22/14 08:25 AM

The first thing I did with my Criterion tube was to sand it down to the bakelite to where it was a completely smooth surface. There were a number of useless holes in the tube including a large hole for a 2” focuser. I used a steel reinforced epoxy putty called Quiksteel(I think J-B weld makes a similar putty) to fill all of the holes. Even though the word “steel” is in the name(it does work great on steel) it bonds strongly to almost any material and adhered nicely to the bakelite. I prefer the putty because I feel like I have more control using my hands to mold it into place and it’s not very messy. Once it cures it is very easy to sand and is very strong.

For the large hole, I rolled a piece of aluminum to have an inside radius that was the same as the outside radius of the tube. Put a piece of plastic wrap over the hole, put the aluminum piece over that then clamped it and filled the hole from the inside with the putty. When the aluminum piece was removed, I just had to sand it smooth as it had the same contour as the tube.

The key is whatever method you choose to use, make sure the tube is as smooth as possible before painting.


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FlashGordan
member
*****

Reged: 12/29/13

Loc: Southern New Jersey
Re: Another RV-6 restoration new [Re: snork]
      #6327930 - 01/22/14 09:40 AM

I have to say that I think I got really lucky that there isn't more damage to the tube than what's in the pictures. A couple small dings at both ends, and the holes under the finder mount are about it. I'll post more pictures later today.

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FlashGordan
member
*****

Reged: 12/29/13

Loc: Southern New Jersey
Re: Another RV-6 restoration new [Re: FlashGordan]
      #6329201 - 01/22/14 07:19 PM

Got a picture of the saddle today.


Thinking about grinding the first weld away and build a jig to reweld both perches perfectly straight. I think that the first weld is crooked and that's the reason why the second perch broke loose. Or am I a little delusional?


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snork
sage
*****

Reged: 01/27/12

Loc: NE Ohio
Re: Another RV-6 restoration new [Re: FlashGordan]
      #6329235 - 01/22/14 07:36 PM

Where's the weld, I can't make it out in the picture?

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Datapanic
Carpal Tunnel
*****

Reged: 10/17/09

Loc: Tucson, Arizona
Re: Another RV-6 restoration new [Re: FlashGordan]
      #6329616 - 01/22/14 11:40 PM

Quote:

The finder does say Criterion on it. But how do I tell if it's the original mount?




There are a couple pictures of the finder mount on page 2 of this thread.


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dgreyson
professor emeritus
*****

Reged: 11/06/12

Loc: South Carolina
Re: Another RV-6 restoration new [Re: Datapanic]
      #6329984 - 01/23/14 07:33 AM

I wonder if the easiest way to line up the saddle wouldnt be to strap the empty tube back on to get things straight for a few spot welds and then take it back off and finish the welding?

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