Difficulty of putting the copal shutter blades back on the plate of yashicaflex s

corydon

Member
Joined
Apr 13, 2025
Messages
8
Location
NZ
Format
35mm
Hi buddies, my Yashicaflex S has copal shutter blades got jammed. The one of 5 has some broken at the edge and 2 of 5 have ring ears distorted. I found it is very hard to put them all in the places. I wonder if there is a better way to do it?

Thanks.
 

Attachments

  • WechatIMG52.jpg
    152.5 KB · Views: 40
  • WechatIMG51.jpg
    92.4 KB · Views: 41

Don_ih

Member
Joined
Jan 24, 2021
Messages
8,284
Location
Ontario
Format
35mm RF
Whenever I've done it, I've found it helpful to not even breathe.

I think some people use Rodico (a cleaning putty used by watchmakers) to hold them in place (leaves no residue). I've only ever just gingerly put them where they needed to go and kept doing it until they all stayed long enough to get it together.

That chewed up blade looks pretty bad. You'll want to sand that damaged part as smooth as possible and I think it's still likely it'll mess up again.
 
OP
OP

corydon

Member
Joined
Apr 13, 2025
Messages
8
Location
NZ
Format
35mm
Thanks Don. What size sand paper is suitable? And any other way to replace the chewed one.
 

Don_ih

Member
Joined
Jan 24, 2021
Messages
8,284
Location
Ontario
Format
35mm RF
More like a very fine grinding surface. You need no burrs and the blade need to be perfectly flat and smooth. Other than getting a blade from another shutter (one that matches), I don't know where else you could get one.
 

Dan Daniel

Subscriber
Joined
Jul 4, 2009
Messages
2,969
Location
upstate New York
Format
Medium Format
A US dime fits in the center hole nicely to hold blades up. A nickel behind that, and then you can stack more coins, find a small bottle cap, or whatever to hold the dime in place.

Or assemble with blades open. Need to slide blade ring to open position of course.
 
OP
OP

corydon

Member
Joined
Apr 13, 2025
Messages
8
Location
NZ
Format
35mm
corydon said:
Thanks Don. What size sand paper is suitable? And any other way to replace the chewed one.
Click to expand...

Someone advised to fill the lens hole with some tissues to hold the blades. It did work. I finally put all 5 blades back to the shutter ring after trying 10+ times. . Now I meet the next blocking. In order to trigger the shutter release via shutter lever correctly, a cap and a spring should be mounted. But I couldn't figure out how to secure them. Please could you advise? Thanks! I tried to insert the cap inside the lever slot but the shutter just release half way.
 

Attachments

  • cap-1.jpg
    91.8 KB · Views: 24
  • cap-2.jpg
    85.5 KB · Views: 20
  • WechatIMG55.jpg
    236.2 KB · Views: 22
  • WechatIMG58.jpg
    167.5 KB · Views: 20
You must log in or register to reply here.
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…