@Dan Daniel and @monopix
Thank you both for your very, very helpful assessment—it all makes sense now:
And indeed, the winding stop arm was adjusted to the radius of the rotary disc without the claw running inside. It should have been adjusted to the radius of the claw running inside, as can be seen in the monopix video. That's why it kept getting stuck instead of running smoothly.
To my surprise, it could actually be bent into shape by hand without tools, I tried to do the best I could, as the metal seems rather brittle.
Apart from the lack of lubrication, and the now really worn out used film, which gave additional resistance, it now runs perfectly in my opinion.
Please take a look at the video:
Thank you both for your very, very helpful assessment—it all makes sense now:
And indeed, the winding stop arm was adjusted to the radius of the rotary disc without the claw running inside. It should have been adjusted to the radius of the claw running inside, as can be seen in the monopix video. That's why it kept getting stuck instead of running smoothly.
To my surprise, it could actually be bent into shape by hand without tools, I tried to do the best I could, as the metal seems rather brittle.
Apart from the lack of lubrication, and the now really worn out used film, which gave additional resistance, it now runs perfectly in my opinion.
Please take a look at the video: