dbraid Posted February 3, 2011 Share #1 Posted February 3, 2011 Advertisement (gone after registration) I am wondering if someone might help me identify a mysterious small part that appeared in the threads of my Bellows 2 as I went to screw in an adapter. It is a small cylindrical spacer 3mm in diameter with a 1.2mm hole on axis. From flat face to flat face it is 1.5 mm. It seems to be made of some kind of dark grey polymer. My suspicion is that it came out of the visoflex somehow, but I cannot see where it might have come from. If anyone has a good sense of how this is put together and where such a part might have come from, I would be grateful. There are other possible sources, but they seem unlikely. My M9 was attached (doubtful it came from here). I had also mounted an old 135 Elmar lens head attached to a 16464K focussing mount and OTSRO adapter. I had mounted the full 135 elmar lens barrel with a bayonet-to-sm adapter on the Bellows-to-M adapter. I had to take the locking mechanism of the M-mount adapter apart to gain clearance, so it is possible the part came from there, but I didn't see where it was missing when I took this apart again. Maybe it fell from the sky. Does anyone have any insight here? Thanks Donald Link to post Share on other sites More sharing options...
Advertisement Posted February 3, 2011 Posted February 3, 2011 Hi dbraid, Take a look here Mystery Part. I'm sure you'll find what you were looking for!
doubice Posted February 3, 2011 Share #2 Posted February 3, 2011 Can you post a photo of this mysterious piece? Best, Jan Link to post Share on other sites More sharing options...
dbraid Posted February 3, 2011 Author Share #3 Posted February 3, 2011 Sure. Here it is: Link to post Share on other sites More sharing options...
spydrxx Posted February 3, 2011 Share #4 Posted February 3, 2011 It looks like a polymer thread reducer for a tripod to me. I've only seen them in aluminum & brass though. Link to post Share on other sites More sharing options...
giordano Posted February 3, 2011 Share #5 Posted February 3, 2011 It looks like a polymer thread reducer for a tripod to me. I've only seen them in aluminum & brass though. 3mm diameter??? Link to post Share on other sites More sharing options...
Nicoleica Posted February 3, 2011 Share #6 Posted February 3, 2011 It looks like some sort of internal spacer or bushing to me. Judging by the damage at one end, it has had a screw or threaded stud passing through it. You mentioned that you disassembled a part earlier. Could it have fallen out of that when you removed a screw or stud? Link to post Share on other sites More sharing options...
luigi bertolotti Posted February 4, 2011 Share #7 Posted February 4, 2011 Advertisement (gone after registration) Uhm... there can be some small component like this INSIDE the mirror box of the Visoflex... try to inspect with an illuminated enlarger the mirror's mechanism.... Link to post Share on other sites More sharing options...
elgenper Posted February 4, 2011 Share #8 Posted February 4, 2011 Looks like a friction washer, possibly from the focussing mechanism in the bellows (to adjust the amount of drag). If so, it shouldn´t be able to work loose without splitting, but less than professional dismantling and reassembly could have left it floating. Link to post Share on other sites More sharing options...
dbraid Posted February 4, 2011 Author Share #9 Posted February 4, 2011 All good suggestions. I took apart the adapter I had disassembled before I discovered this, and there is no possible place for the part. I hadn't though of this coming from the mechanism outside the bellows, but that is as possible as falling from the sky. I will look at this. The scraping on the piece does imply heavy wear of some sort. As for the viso mechanism, I can't see where such a part would go. Then again, I was hoping this was one of several such pieces, so that I could see how they were used. I may look again. Maybe I should send the photo to D.A.G. or some similar shop. I welcome ay more suggestions. Donald Link to post Share on other sites More sharing options...
pico Posted February 4, 2011 Share #10 Posted February 4, 2011 It looks like a friction roller. A shaft would go through it, and it would roll along a rail. See the detente worn into the outside circumference. I'm reminded of finding a dead bug in a Nikon F. It definitely came from outside. In your case, it might be that you had parts on the bench when disassembling and it popped or dropped into another part. Link to post Share on other sites More sharing options...
adan Posted February 4, 2011 Share #11 Posted February 4, 2011 Could it be a bumper that a Viso or SLR mirror rests on when "down?" It seems like a small part like this could fall into the folds of the bellows and remain there for decades, so it may even be from a previous owner's equipment. If this were found at a crime scene, what would the CSI lab do with it? Link to post Share on other sites More sharing options...
elgenper Posted February 4, 2011 Share #12 Posted February 4, 2011 Could it be a bumper that a Viso or SLR mirror rests on when "down?".... Seems to me that the exact mirror position should be quite critical for correct focussing. Would a part that determines where it rests really be this soft and ´fuzzy´ ? ....If this were found at a crime scene, what would the CSI lab do with it? Look for a Leica owner as prime suspect.... Link to post Share on other sites More sharing options...
dbraid Posted February 4, 2011 Author Share #13 Posted February 4, 2011 Adan, I do like the possibility that this piece has been in the bellows folds for years. That multiplies the possible sources. I don't think it was a "stop" for the viso mirror. This is a possibility I had considered, but I would expect two such pieces. Then again, the viso seems to be focusing fine--as the image I posted confirms. I suppose it could be part of a "soft stop" for when the mirror flips up--and this may be what you meant. I am starting to wonder if this piece will be placed in a box like the extra parts was left with when I reworked the cylinder head of my old volvo. The car never seemed to miss them. Then again, I don't think Leica engineers would design something with unnecessary pieces. I will do some more investigation over the weekend. Donald Link to post Share on other sites More sharing options...
pico Posted February 5, 2011 Share #14 Posted February 5, 2011 Could it be a bumper that a Viso or SLR mirror rests on when "down?" I've an earlier Viso and the mirror in the down position rests upon a bare allen-head stud which is adjustable for height. (Relating to an earlier post, and this one). Link to post Share on other sites More sharing options...
pop Posted February 6, 2011 Share #15 Posted February 6, 2011 There's another thread going with a picture of such a strut. It seems to me that the part depicted there resembles the mystery part here. http://www.l-camera-forum.com/leica-forum/leica-m9-forum/164541-m9-viso-iii-yet-another-problem.html Link to post Share on other sites More sharing options...
dbraid Posted February 6, 2011 Author Share #16 Posted February 6, 2011 Pop, I just read that thread. The main difference is material. Metal vs the polymer of my mystery part. I did look carefully in the viso--there seems to be no place for such a part of plastic. I am starting to think it may have come out of the bellows after a long rest. Donald Link to post Share on other sites More sharing options...
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