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Leningrad film advance keeps getting stuck
Old 01-09-2017   #1
almost
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Leningrad film advance keeps getting stuck

Hi
I have a nice Leningrad which is fully working. When shooting dry there are no issues at all. But when I put a film in, I can never go through a whole roll. Even if i am very careful and basically rewind the spring after every couple of rolls, after the first 10 or so frames i start having problems. The film will not advance, or will advance just a little. Then if i "rest' the camera and try again, sometimes i can get to the end of the roll. I thought I could use Foma 24 exp rolls as a sort of workaround. With the shorter roll I still get stuck sometimes, and even though i do manage to finish the roll i find I have some blanks, some streaks, some partial double exposures due to insufficient advance of the film.
As i said when shooting dry the film advances well and the spring feel really strong.
any ideas? I really do not know what else i can do… probably nothing eh?
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Old 01-09-2017   #2
sevo
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Don't know about the Leningrad, but the problem of mid-roll transport failures is almost always due to some synchronisation issue between the perforation sprocket drum and take-up spool, most frequently a loose or entirely disengaged take-up clutch (resulting in the sprocket pushing more film towards the spool than the failed spool transport can pick up).
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Old 01-09-2017   #3
almost
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Leningrad has unique transportation system, no spockets. thanks for your info but does not apply to leningrad, which is somewhat of a unique camera.
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Old 01-09-2017   #4
sevo
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Quote:
Originally Posted by almost View Post
Leningrad has unique transportation system, no spockets. thanks for your info but does not apply to leningrad, which is somewhat of a unique camera.
Does it make an attempt at constant spacing? If so, that mechanism is what I'd be looking into first - in medium format cameras, that is usually the first thing to go bad. Or it might be a torque problem - as the take-up spool fills, more torque is needed due to the increased diameter, and a spring loaded or motor driven camera will become stuck as soon as the required torque exceeds what the drive can deliver.
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