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Collapsible Cron Repair |
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07-03-2007
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#1
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Registered User
trittium is offline
Join Date: Oct 2005
Location: Central CT
Age: 28
Posts: 659
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Collapsible Cron Repair
I uncrewed to two screws holding in the aperture ring on the cron. I guess the spring on the blade pushed the retaining ring up, and now I can't get the screws back in.
I was able to remove the first and second element, but there is another one in the way I cannot figure out how to remove. It doesn't have spanner marks and does not fall out. I have tried to unscrew the filter ring, to no avail. How do I get to the aperture retaining ring so I can push it down and screw the screws back in?
__________________
-Matt
If you want to see some of my photos you can go to http://flickr.com/photos/trittium/
Some Digital Art Here
http://flickr.com/photos/tri77ium/
M2, Hexar RF, Leica IIIC, Leica IIIf RD ST, Leica IIF RD too many lenes
Mamiya 6 folder, Certo Dolly Super Sport RF
Voigtlander Alpin, Calumet 4x5, Robot Star 50, Robot II, Robot Star, oh yeah and a crappy minolta digital camera
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07-03-2007
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#2
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Registered User
trittium is offline
Join Date: Oct 2005
Location: Central CT
Age: 28
Posts: 659
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does anybody know?
__________________
-Matt
If you want to see some of my photos you can go to http://flickr.com/photos/trittium/
Some Digital Art Here
http://flickr.com/photos/tri77ium/
M2, Hexar RF, Leica IIIC, Leica IIIf RD ST, Leica IIF RD too many lenes
Mamiya 6 folder, Certo Dolly Super Sport RF
Voigtlander Alpin, Calumet 4x5, Robot Star 50, Robot II, Robot Star, oh yeah and a crappy minolta digital camera
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07-04-2007
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#3
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Registered User
trittium is offline
Join Date: Oct 2005
Location: Central CT
Age: 28
Posts: 659
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Here is a photo to help explain my issues
__________________
-Matt
If you want to see some of my photos you can go to http://flickr.com/photos/trittium/
Some Digital Art Here
http://flickr.com/photos/tri77ium/
M2, Hexar RF, Leica IIIC, Leica IIIf RD ST, Leica IIF RD too many lenes
Mamiya 6 folder, Certo Dolly Super Sport RF
Voigtlander Alpin, Calumet 4x5, Robot Star 50, Robot II, Robot Star, oh yeah and a crappy minolta digital camera
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07-04-2007
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#4
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B+W film devotee
350D_user is offline
Join Date: Dec 2006
Location: Clacton-on-sea
Age: 44
Posts: 506
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An analysts viewpoint... if you can't get at it from one side...
... unless attacking the lens from the rear element isn't a good idea.
I stand to be corrected on this one, having never had the guts to strip a lens at all.
__________________
Dave
Cameras currently in use: 1975 Kiev-4, 1938 Leica Standard, 1946/47 Leica IIIc
Lenses currently in use: Jupiter-8, Industar-22 (KMZ and KOMZ), 1937 Elmar 3.5cm
Weblog: In both worlds
Galleries: RFF : Monochrome : * of my best
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07-04-2007
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#5
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Registered User
Flyfisher Tom is offline
Join Date: Feb 2005
Location: on the river ...
Posts: 1,989
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Have you tried using a rubber ring for traction/friction to unscrew the front retaining ring?
__________________
regards,
Tom
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07-04-2007
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#6
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Registered User
trittium is offline
Join Date: Oct 2005
Location: Central CT
Age: 28
Posts: 659
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Quote:
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Originally Posted by Flyfisher Tom
Have you tried using a rubber ring for traction/friction to unscrew the front retaining ring?
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I tried a rubber ring, and rubber lid openner. From what I read, the whole front assembly is supposed to unscrew, but it isn't unscrewing. Could it be cemented in place? If so, how can I safely break/lossen the cement without damaging the other elements?
__________________
-Matt
If you want to see some of my photos you can go to http://flickr.com/photos/trittium/
Some Digital Art Here
http://flickr.com/photos/tri77ium/
M2, Hexar RF, Leica IIIC, Leica IIIf RD ST, Leica IIF RD too many lenes
Mamiya 6 folder, Certo Dolly Super Sport RF
Voigtlander Alpin, Calumet 4x5, Robot Star 50, Robot II, Robot Star, oh yeah and a crappy minolta digital camera
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07-04-2007
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#7
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Registered User
trittium is offline
Join Date: Oct 2005
Location: Central CT
Age: 28
Posts: 659
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Quote:
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Originally Posted by 350D_user
An analysts viewpoint... if you can't get at it from one side...
... unless attacking the lens from the rear element isn't a good idea.
I stand to be corrected on this one, having never had the guts to strip a lens at all.
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I tried from the rear, but I cannot get the retaining ring to unscrew fully.
__________________
-Matt
If you want to see some of my photos you can go to http://flickr.com/photos/trittium/
Some Digital Art Here
http://flickr.com/photos/tri77ium/
M2, Hexar RF, Leica IIIC, Leica IIIf RD ST, Leica IIF RD too many lenes
Mamiya 6 folder, Certo Dolly Super Sport RF
Voigtlander Alpin, Calumet 4x5, Robot Star 50, Robot II, Robot Star, oh yeah and a crappy minolta digital camera
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07-04-2007
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#8
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StayAtHome Dad & Photog
wlewisiii is offline
Join Date: Jul 2004
Location: Madison, WI
Age: 49
Posts: 5,339
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DAG. Cost me about $100 to fix from a similar level of dissassembly.
William
__________________
My Gallery
My Best Pictures
Playing and learning daily with: 4x5 Crown Graphic, Leica IIIf w/ 50/2 Summitar, Nikon F2 Photomic w/ 50/1.4 & Olympus E-PL1.
"Some people are 'the glass is half full' types. Some people are 'the glass is half empty' types. I'm a 'the glass is full of radioactive waste and I just drank half of it' type. And I'm still thirsty." -- Bill Mattocks
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07-04-2007
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#9
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Registered User
trittium is offline
Join Date: Oct 2005
Location: Central CT
Age: 28
Posts: 659
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Quote:
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Originally Posted by wlewisiii
DAG. Cost me about $100 to fix from a similar level of dissassembly.
William
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$100 is more than I want to pay, but at this point it is the principle.
__________________
-Matt
If you want to see some of my photos you can go to http://flickr.com/photos/trittium/
Some Digital Art Here
http://flickr.com/photos/tri77ium/
M2, Hexar RF, Leica IIIC, Leica IIIf RD ST, Leica IIF RD too many lenes
Mamiya 6 folder, Certo Dolly Super Sport RF
Voigtlander Alpin, Calumet 4x5, Robot Star 50, Robot II, Robot Star, oh yeah and a crappy minolta digital camera
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07-04-2007
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#10
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Registered User
trittium is offline
Join Date: Oct 2005
Location: Central CT
Age: 28
Posts: 659
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I was able to manipulate the aperture diaphram through the screw holes with a pin. So it is fixed. Yey! Thanks for the support.
__________________
-Matt
If you want to see some of my photos you can go to http://flickr.com/photos/trittium/
Some Digital Art Here
http://flickr.com/photos/tri77ium/
M2, Hexar RF, Leica IIIC, Leica IIIf RD ST, Leica IIF RD too many lenes
Mamiya 6 folder, Certo Dolly Super Sport RF
Voigtlander Alpin, Calumet 4x5, Robot Star 50, Robot II, Robot Star, oh yeah and a crappy minolta digital camera
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04-30-2010
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#11
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Registered User
bobkatz is offline
Join Date: Apr 2007
Location: Just here
Posts: 293
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Quote:
Originally Posted by trittium
I was able to manipulate the aperture diaphram through the screw holes with a pin. So it is fixed. Yey! Thanks for the support.
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Glad hear thih..what about a DIY for CLA the coll cron??? 
I have one coll, Id like to clean a Bit...
Bob. |
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