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Moskva
Feb 20, 2006 10:07:38 GMT -5
Post by herron on Feb 20, 2006 10:07:38 GMT -5
Rick (byuphoto): I know you have and use a Moskva folder, and I have a question about mine. The shutter release mechanism does not work properly. I can trigger the shutter with the lever near the front of the lens (and it works fine, at all speeds), but the release on the top plate does not move the mechanism to trigger it. It seems to work beautifully otherwise, and I hate to tear it apart to fix the problem -- particularly since I cannot see any easy way to do it! There are no screws that I can find to dismantle anything! Do you have any idea how to go about it? I've got to believe there is something easy, like a loose or missing spring, that is causing this rather simple mechanism to malfunction...but I will be d**ned if I can find a way to get to it!
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mickeyobe
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Moskva
Feb 20, 2006 11:27:53 GMT -5
Post by mickeyobe on Feb 20, 2006 11:27:53 GMT -5
Ron, Pardon me for butting in. I have a Kodak Senior Six 16 that presented me with the same problem. I spent hours trying to figure out what was wrong. I then put a piece of ground glass on the film plane to see if everything else was ok and found I could not focus properly. The Drop bed had not opened completely. With a simple light downward pressure on it it snapped into position and all problems were solved. Is it possible? Mickey
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Moskva
Feb 20, 2006 11:41:15 GMT -5
Post by herron on Feb 20, 2006 11:41:15 GMT -5
I wish it was that simple, Mickey. If you look at Rick's picture of his Moskva the shutter release is that chrome flange at the bottom left of the lens. Harder to see in this image is the black tang that is supposed to lift that chrome flange and release the shutter, when the release button on the top plate is pushed. That's the little bugger that won't move, and I can find no obvious way, short of a crowbar, to get the camera apart to work on it! I've had a problem similar to what you describe when this camera, or some similar folders, are not held in the proper position when the front door is opened...when that happens it is possible for the shutter release (the chrome part here) to come down below the tang that releases it. A careful partial reclosing (sometimes a full closure is not possible with tang in the wrong place) and re-opening, with the camera held properly, will let it fall back into place. Unfortunately, that is not the problem here.
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PeterW
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Moskva
Feb 20, 2006 14:20:38 GMT -5
Post by PeterW on Feb 20, 2006 14:20:38 GMT -5
Hi Ron,
I wouldn't go out and buy a crowbar just yet. I haven't got a Moskva like yours with a body release, but the later Super Ikonta, Ikonta, Nettar etc, plus a few other cameras from Kodak, Voigtländer, Agfa and so on used similar arrangements.
The layout varied slightly but basically the release button pressed down a rod which engaged with the end of a small rocking lever. The other end of this rocking lever lifted a tag on one side of a flanged plate running forward along the baseboard to the shutter. This was usually quite crudely pivoted on two lugs coming up from the baseboard. On the front end of this flanged plate is the little bugger that's supposed to trigger the shutter but which, on yours, doesn't move. You can follow the mechanism pretty well with a small pen light by lifting the bellows gently out of the way.
Usually - but not always - the little bugger on the flanged plate sat outside the lens trigger and pushed it in towards the lens, and I have come across some that were bent and sat on the wrong side, but you say you've checked this. OK so far?
Now to find out what's gone amiss. There are two possibilities: Either something in this linkage is stuck (unlikely to be immovable. Sticky or jerky, yes, but I haven't found one stuck solid).
The other possibility is that the double exposure prevention interlock isn't freeing when you wind on. so the release button on the top plate is always locked. You have tried winding on the knob before trying to fire the shutter, I suppose - silly question, but sillier things have happened to me - DOH!!
If you can ascertain for certain that possibility One is the case, you can undo the ring inside the bellows that holds the shutter assembly to the front of the lens standard, and push the bellows back into the body to expose the linkage and free it or lubricate it.
If, however, by prodding and lifting with tweezers you can find even a small amount of free pay in the linkage until you get to the button itself, then the chances are that the double-exposure interlock is jammed. This means further dismantling under the wind-on knob to find out why.
Sorry if this is bad news, but I've come across both causes in the past.
Good luck,
Peter
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Moskva
Feb 20, 2006 16:03:53 GMT -5
Post by herron on Feb 20, 2006 16:03:53 GMT -5
If you can ascertain for certain that possibility One is the case, you can undo the ring inside the bellows that holds the shutter assembly to the front of the lens standard, and push the bellows back into the body to expose the linkage and free it or lubricate it. If, however, by prodding and lifting with tweezers you can find even a small amount of free pay in the linkage until you get to the button itself, then the chances are that the double-exposure interlock is jammed. This means further dismantling under the wind-on knob to find out why. Sorry if this is bad news, but I've come across both causes in the past. Rats! I have the camera here with me (at work), and I can see the linkage you refer to. A little prodding shows me it moves slightly (I'm afraid to do much with no real tools, for fear of puching a hole in the bellows). But I'm beginning to think you're right and the double-exposure interlock is jammed. Winding on does not seem to release it (I shot a couple of pictures of the Detroit River with it this morning), so it begins to look like some "further dismantling" is required. At least the wind knob appears to have a set screw in the center of it, so I have someplace to start. I also found this page, which offers a little advice on how to access things inside the top plate: homepage.mac.com/mattdenton/photo/cameras/moskva_5.htmlThanks for the help. I'll let you know how easy (or not) this turns out to be!
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PeterW
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Moskva
Feb 20, 2006 17:12:22 GMT -5
Post by PeterW on Feb 20, 2006 17:12:22 GMT -5
Hi Ron,
Also have a look at David Richert's pages on Super Ikonta overhaul
Slightly different from yours in that he's talking about a 6x6, and I don't think he actually mentions the interlock but you may find something useful.
Peter
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Moskva
Feb 20, 2006 19:18:14 GMT -5
Post by byuphoto on Feb 20, 2006 19:18:14 GMT -5
I was going to say the same thing as Peter. Sounded like the double exposure lock was causing it. Sorry I have never had to disassemble or work on one
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Moskva
May 9, 2006 22:37:12 GMT -5
Post by herron on May 9, 2006 22:37:12 GMT -5
Well, I guess I can apply for membership to Peter's Procrastinator's Club any day now. The problem with my Moskva still exists...have not touched it since February when we talked about it. I did, however, get around to developing that roll of film. Here's one of the shots of "the Detroit River" that I took that morning in February. I cropped it slightly to get rid of a lens flare on the left side. www.mamiya35collectors.com/river to bridge.jpg[/img]
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