limnidytis
Member
Hi,
I recently disassembled a Minolta 7s Seiko LA shutter to fix stuck blades. Most of the blades except one came out as glued together mass. One blade, I believe #1 was displaced when I separated the two halves of the shutter. After I got the blades apart, I discovered there were 6 blades - one extra. I've fixed a number of Canonet Copal shutters with the spacers but never a shutter that has extra blades. I know that some shutters have the extra blades - but the purpose of the extra blades is unclear to me. I took a photo of the blade positions before I removed them from the shutter so I know the order - I need to know where the extra blade goes. I could not find a repair manual for this version of the camera. I have the manual for the 7sII - but the shutter is different and has 8 blades - 3 extra - the first 3 blades are duplicated. I'm looking for insights for the blade order for the 7s shutter.
Thanks
I recently disassembled a Minolta 7s Seiko LA shutter to fix stuck blades. Most of the blades except one came out as glued together mass. One blade, I believe #1 was displaced when I separated the two halves of the shutter. After I got the blades apart, I discovered there were 6 blades - one extra. I've fixed a number of Canonet Copal shutters with the spacers but never a shutter that has extra blades. I know that some shutters have the extra blades - but the purpose of the extra blades is unclear to me. I took a photo of the blade positions before I removed them from the shutter so I know the order - I need to know where the extra blade goes. I could not find a repair manual for this version of the camera. I have the manual for the 7sII - but the shutter is different and has 8 blades - 3 extra - the first 3 blades are duplicated. I'm looking for insights for the blade order for the 7s shutter.
Thanks
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limnidytis
Member
OK, after poking around with Google I found a Hi-Matic 9 repair manual on the Yahoo minoltarangefinders group - fortunately, a tech had drawn an diagram of blade order on one of the pages - the first blade is the duplicated blade. I'm still unclear on the role of the duplicated blades, and why the 7sII has 3 duplicated blades.
btgc
Veteran
I personally haven't met in life, but have read some shutters duplicate one blade.
hellomikmik
Well-known
Have you put it finally together? I had the same question for about 20 seconds in my head one month ago. I just placed the extra blade over the last one (the last one under the first one so it was in between). I did one roll and nothing special happened. Mine is Hi-matic 7.
limnidytis
Member
No, not enough time - too much work. Blade #6 goes on top of the first blade. The first blade goes on the stud to the right of the self timer lever and the blades are installed counterclockwise.
farlymac
PF McFarland
I believe it's for extra support. Some shutters I've worked on have little stub blades along with the regular blades.
PF
PF