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The Cleanstoration of a Mizar SP-68R (68/1000mm)

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#26 Kasmos

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Posted 24 March 2020 - 01:26 PM

What a great quarantine project! Looks great!

Thanks!

Most of the work was done before the lock down but do have a little more to do, not to mention a few other scopes in need of work.



#27 Bomber Bob

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Posted 24 March 2020 - 02:29 PM

Chris, although some hardware differences your resto is going nicely and I'm keenly following along. I also notice your legs have some blocking between the the hub and the tray that would make it a little more rigid. I might have to look for some mahogany.

My Mizar SP + wood tripod versus Mizar AR + ShortPod:

 

2 Mizar EQ Mounts - Complete S02.jpg

 

The wood tripod has the braces above the tray, and is almost as robust as that 1960s Eagle surveyor tripod that I now use with my VersaGo.

 

What I need:  At least 2 more genuine gray Mizar counterweights.

 

Chris, you are a Maniac (in the best way!):  The only tripod hardware I've ever polished were the chrome bolts to my 452 with the raised Goto symbols.


Edited by Bomber Bob, 24 March 2020 - 02:32 PM.

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#28 Kasmos

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Posted 24 March 2020 - 04:39 PM

The Slow Motion Knobs & Cables

 

Before and After photos

 

Slow-Mos-B4.jpg

Like most of the scopes hardware the Knobs and Cables were looking a bit sad. 

 

Slow-Mos-Aft.jpg

First they recieved a generally wiping down and cleaning with Simple Green.

The chrome sections and screws were polished, first using Nevr-Dull, then Blue Magic.

#0000 steel wool was used while the Nevr-Dull was wet and a small brass brush was used on the screws.

Stuff with small nooks and cranies are usually treated back and forth with Nevr-Dull, Blue Magic,

a brass brush, steel wool, sometimes a stainless brush, or a toothbrush. In other words whatever works.

Then the plastic elements were treated with Mothers LVR Vinyl Leather and Rubber Cleaner Conditioner.

 

Slow-Mos-Coup-B4.jpg

There was a somewhat hardened greenish film of oxidation on the couplers,

and I wasn't very confident that the bottom rusty screw would be salvageable.

 

Slow-Mo-Couplers.jpg

Some patina is left in the form of small freckles on the couplers,

but overall I'm very happy how the chrome came back to life.

I was especially surprised how well both Allen Screws came out.

 

Slow-Mos-Knobs-B4.jpg

 

Slow-Mo-Knobs-2.jpg

The knobs came out nicely too.

 

Slow-Mo-Knobs-1.jpg


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#29 walter a

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Posted 25 March 2020 - 08:13 AM

Walter,

My scope's tripod lower inner legs have holes drilled for different height settings. Is your's the same or do they slide for height adjustments?

 

Also, I noticed yours has a solid slow motion control shaft. Mine has the flexible cable type. That's probably something I'd like to change.

Correct they slide for adjustment and as for the slo-mos I swap them between the mizar and carton mounts as they share the larger shaft size.

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