Sonector 8 Agfa Film tension

[Leo Chassey]

Hello everyone,
I recently bought, the Sonector 8 with a short film. I have trouble running the film in one go as the film tends to tighten on the top part.
Therefore I need to untight the loop several time to be able to watch the film entirely.
If anyone has an idea on how to fix this problem I would be glad to hear about it.

thank you,
a 8mm enthusiastic.

[Mark Todd]

Hi Leo nice looking little machine there.

It looks like a top/1st sprocket issue and film not quite making it past the 1st sprocket as the 2nd after gate loop is holding OK. The 1st sprocket teeth sort of slipping out of the film perforations if you will, so not advancing.

Is the feed reel with the film on running freely, or is it a little tight causing the film to work over the first procket ? and not be moved on if you will.

Just be sure the little rollers and guides that sit under the 1st sprocket are holding it against the sprocket OK, and is that first sprocket shue staying up against the 1st sprocket as it should be. If its falling away a bit so the sprocket may slip past the film/perfs. Something like that seems to be happening.


It will clip against it or be a little spring holding it against it.

Anyway good luck and sure its sortable, nice projector.

Best wishes Mark.

[John Burgess]

Used to have one of these projectors, they run well and v quiet. Never had your problem but wondered whether the top sprocket
may need tightening on the shaft. If it was slipping it would cause the film to become tight over the lamp house top. Just a thought but worth checking. Good luck Leo.


John

[Leo Chassey]

Thanks Mark for this quick response.
1st Sprocket seems to be just fine, I tried to make it failed by hands, and the culprit may be the bad quality film. As when jumps occur, but it corresponds to broken film gaps.
I'll try with other film, which I don't have for now.

Best regards, Leo.

[Leo Chassey]

Thanks John, I'll look on that.

[Nantawat Kittiwarakul]

Hard to see from the pics, but is the film securely seated to the sprocket wheel?
I'm thinking about excessive clearance between the sprocket wheel vs the sprocket shoe that would let the film slip out. Additional close inspection/adjustments would be necessary.

[Maurice Leakey]

...The culprit may be the bad quality film. As when jumps occur, but it corresponds to broken film gaps...

Leo
I agree with your diagnosis, the film is being pulled off the sprocket teeth due to its damage.
Try a film which has no damage.