Ilex #5 Shutter - Lagging Blades Question

Oak

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Oak

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High st

A
High st

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Flap

D
Flap

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AZD

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Jun 11, 2021
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Today I looked at a lens for sale. It’s in an Ilex #5 shutter, and the blades are sluggish on the closing action. It seems to work fine otherwise, but it doesn’t reach anywhere near its 1/50th max speed.

Now I happen to be handy enough, so I looked inside my own Kodak 12” f4.5 with the same shutter. It appears - appears… - that a thick piano wire spring may be responsible for snapping the blades shut. Can anyone here confirm whether it is in fact the spring shown below? Seems like a relatively easy repair.


IMG_7486.jpeg
 
OP
OP

AZD

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Joined
Jun 11, 2021
Messages
350
Location
SLC, UT
Format
35mm
You know, I really should get my prescription updated. Turns out it’s a smaller spring a few inches away. Even better, BTW, as it’s within the size of a thick unwound guitar string. They make great springs.

IMG_7488.jpeg
 

F4U

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The spring in the top photo is no good. I would not buy this shutter. Guitar strings make FAIR springs, Not good ones.
 
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