Zorki 3M full CLA, part 3

A short series on fully servicing a Zorki 3M.
In this episode I'm trying to explain how the curtains' positions can be altered, some thoughts about the first curtain brake and curtain bounce.
I'm also doing the first checks on the shutter right after getting it back into the shutter crate and try to fix some small niggles before answering a couple of questions received from a YT follower.
#apxvintagecameras #camerarepair #shutterrepair #camerarestoration #cameradisassembly

[@atf2940]

Thank you very much, Alin, for addressing my questions. Everything clearly explained, as always. If I remember correctly, the way the drum movement is restricted is different in models 1 and 3 (and sequels): very briefly, in mod 1 there is no pin in the shutter crate that inserts into a partial cut out under the bottom drum gear, right? Whether the novelty has an advantage for the camera operation I don't know but it certainly makes the drum insertion during CLA easier. For the weekend I have a model 4 on the table and will try to understand better what the brake mechanism is supposed to do. [Added: It works exactly as described in the video.]]

[@atf2940]

Inspired by you video 😃, I started on the next Zorki-4. I quickly got into such a disassembly flux that I forgot to investigate the brake mechanism more closely (will do that later on reassembly). But I did note that this is a 4 in which the brake nose really does touch the brake blade. If it didn't, one could bend the blade a little as required. You seem to have a bad specimen in which the nose stops way too short, so that bending the blade won't help.

[@AlinCiortea]

I'm happy you're finding these videos inspiring! As for the brake, indeed this particular camera has an issue but the tension used is so low that there's pretty much no vibration when firing the shutter.