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Bliorg
Tinkerer
Username: Bliorg
Post Number: 17
Registered: 11-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, June 21, 2010 - 09:03 am: | 
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Hi, all -
I'm installing a Konirapid-S back into a Konica I rangefinder. The shutter runs precisely, but if the aperture is all the way open, the shutter hangs. Stopping down, the shutter works.
Ideas?
Thanks,
Scott |
Bliorg
Tinkerer
Username: Bliorg
Post Number: 18
Registered: 11-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, June 21, 2010 - 10:08 am: |
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Nevermind - got it. After cleaning, the shutter blade release linkage needed a little lube. Working smoothly now. |
Bliorg
Tinkerer
Username: Bliorg
Post Number: 19
Registered: 11-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, June 22, 2010 - 11:38 am: |
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Ok, not working now. Was testing the speeds this morning, and when the aperture is wide open, about every fifth actuation the shutter blades hang on opening. If you move the aperture to stop down while it's hung open, it releases and works. I opened the shutter back up and applied some light oil to the shutter blade actuator, which didn't change anything. The actuator, which should move easily back and forth, springing back into place with the attached hairspring, is slow and difficult to move. Oil didn't free it up, but did get all over the blades (duh).
So, after cleaning a few times in naphtha, I'm letting the shutter dry. I'm at a loss for what's causing the shutter to hang only when the aperture is wide open. Anyone have any ideas?
Thanks,
Scott |
Mareklew
Tinkerer
Username: Mareklew
Post Number: 110
Registered: 03-2010
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 23, 2010 - 03:23 am: |
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there might be some oil in the aperture activation rings. When the aperture is full open, outer edges of blades stick to that oil.
Marek |
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