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Jackson
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, September 17, 2004 - 06:45 pm: | 
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Another camera I'm trying to get up and running is a Lynx 14 that I acquired some time back. I originally posted info and photos on the work here: LYNX 14
During a subsequent discussion with another forum contributor, it occurred to me that a dim rangefinder could result if the beamsplitter were installed backwards. I had a test in mind to determine if that might be the problem, but before I could check, I acquired another Lynx 14 for parts. I have now swapped the rangefinder from the donor and it seems to be working fine.
Not content to have a nearly working camera, I decided to remove the lens from the body to see what I could do about the inoperative meter switch. To my surprise, the switch in the Lynx 14 is riveted to the lens mount plate (it's screwed on in the Lynx 5000e). I have now swapped in the entire plate from the donor, so the switch problem is resolved.
Of course, with all this done, I couldn't resist cleaning the rear surfaces of the aperture and shutter blades. When I removed the rear element, however, a crumbling foam ring fell out of the back of the lens assembly.
Here's a photo showing the present state of the camera
Here's a photo showing the rear lens element next to a few pieces of the crumbled foam
Finally, here's a closeup of the rear element that shows what I need HELP with...
Does anyone know where the foam should go, and what its purpose is? It was apparently just a slip fit, as there's no adhesive residue on the lens holder. I know it's some sort of light seal, but for the life of me, I can't figure out why this foam is needed. |
Jon Flanders
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, September 17, 2004 - 07:41 pm: |
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There should be somebody here that knows for sure, but I would try making a judgement based on the radius of the foam fragments.
Possibly some black weatherstripping cut to size could replace the ring?
Looking at the picture, and drawing on my experience as a railroad machinist, I would guess that the ring goes on the larger circumference closest to the film plane in order to stop light leaks. You have more room there for an o-ring too given the slanted shoulder.
Jon Flanders |
Tom
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, September 18, 2004 - 09:19 am: |
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Yes, the foam was originally about 2mm wide and just was glued around lens where it screws into the ring. Then, it should be up against the ring as a light baffle. I always use the foamies that you get in a craft store, and they work fine there. You should be able to see glue traces where the original ring was mounted |
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