How do you adjust a Copal No. 3 shutter (1 stop slow @ 125th sec.)

[Deleted member 55]

4 of My Copal No. 3 shutters are 1 stop slow @ 15, 30, 60, and 125th sec.

Any help would be most appreciated!

 

[leonardobarreto.com]

Will, I don't know how to do that, but I may also have to do some engineering with a lens I won on eBay. This is a nice multicoat Schneaider-S but the Copal 0 is not working, so I'm thinking to transfer the glass to the one that came with my 6x9 that is also a Copal 0. I have never attempted this and don't know if is even possible.

Take care Will

 

[Ray West]

Hi Will,

You did ask for 'any help ...'

I found this http://daniel.mitchell.name/cameras/copalmxv/copalmxv.html

I have found that for similar mechanisms, that over time the oil deteriorates, and gums up the works. It used to be easy to degrease similar devices by suspending the mech. over a small container of carbon-tetra-chloride, (inside another larger container) for a period of a few days, the fumes 'dissolved' the grease. You probably have to use safer chemicals today, but they are possibly not so effective. If you know of a local mechanical watchmaker, he may be able to advise, and supply a few drops of a suitable light oil. To apply the oil to pivots, then a sharpened wooden matchstick is ideal, you can get the right sized drop on the point, then deftly transfer it to the pivot. If all else fails, then wd40 may suffice as a lubricant - not sprayed on of course.

If everything in the mechanism is metallic, then immersion in an ultrasonic cleaner may be a good option for degreasing - even the domestic dishwasher, (but make sure it's rinsed and well dried ;-).- before re oiling.

Best wishes,

Ray

 

[Asher Kelman]

Just for clarification. The obvious: remove the lens from the shutter before any of these procedures!

Asher

 

[Duke Beattie]

You can buy a manual here... http://manuals4less.com/shutters.htm It's only a take apart view, but it might help.
Only $5
WD40 is great for dissolving old grease and freeing up equipment. We use it to clean gummed up microscope focus mechanisms. It can be cleaned off with alcohol and then you can re-lube with some other oil or grease. I am not real fond of it for a precision lube, but for clean stuff it's great.

 

[Deleted member 55]

Just for clarification. The obvious: remove the lens from the shutter before any of these procedures!

Thanks Asher, And to think I was going to dunk the whole thing in the left over drainings from my last trip to Jiffy Lube!

I found this http://daniel.mitchell.name/cameras/copalmxv/copalmxv.html

Thanks Ray, This link was very helpful. Too bad they only name the parts and do not show You what they look like so You have to guess what part in the photographs they are talking about! (Sort of like telling a non trekie to put a wiener on the Warp Drive but not telling them where to find the Warp Drive and what it looks like! of-course some trekie might not know what a wiener is either???)

 

[Deleted member 55]

WD40 is great for dissolving old grease and freeing up equipment.

Thanks for the link Duke.

And WD40 is good as a flame thrower too.


Ray and Duke,

I was thinking a few drops of No 2 Diesel for a thin lubricant.