Super 8 Kassette Gewicht der Andruckplatte

[Erkan Umut]

Hallo Leute,

 

ich frage mich, was das Super 8 Kassette Andruckplatte Gewicht (in Gramm) ist. Haben Sie irgendwelche Informationen bezüglich dieser seltenen Abmessungen?

 

Außerdem, kann der Polyester basiert Film zu Problemen in Super 8-Kameras führen? Gibt es eine Anpassung, die für die Andruckplatte Gewicht für dünner Polyester-Film gilt?

 

Vielen Dank für jede Info!

 

Erkan

[Film-Mechaniker]

Dieser Quatsch steht auch bei cinematography. Wenn es Erkan Umut ist, dann verstehe ich nicht, wie er darauf kommt. Ansonsten meint die Person ja Andruckkraft, nicht Gewicht. Sagen wir 1,56 Newton, dann ist er zufrieden.

[Erkan Umut]

Dieser Quatsch steht auch bei cinematography. Wenn es Erkan Umut ist, dann verstehe ich nicht, wie er darauf kommt. Ansonsten meint die Person ja Andruckkraft, nicht Gewicht. Sagen wir 1,56 Newton, dann ist er zufrieden.

 

Ja, bin ich Erkan Umut!

(Ich hab ein Mittelstufe Diplom von Geothe Institut, aber leider habe ich meine Deutschkentnisse verloren. Lieber spreche ich Englisch.)

Vielen Dank für Ihre Antwort!

[Film-Mechaniker]

Erkan, do you really want to know about the Super-8 catridges’ film pressure pad spring force?

[Erkan Umut]

Erkan, do you really want to know about the Super-8 catridges’ film pressure pad spring force?

Yes, absolutely!

 

You told before that is about 1,56 N, and I got similar response about 150gr from a Camera Technician (Dom) in Australia. Its almost the same.

 

I have searched several service manuals, and the Soviet GOST standars including some SMPTE without success. Of course you cannot find any info related to that in the Super 8 camera service manuals, 'cause the pad is in the cassette. But I have got these:

Canon DS8 has these characteristics: Pressure plate pressure - 70-90gr, Side gate pressure - 40-60gr, Take-up torque - 60-90gr per cm (100ft), etc.

Canon Canonet 8 (D8): Pressure plate pressure - 40-60gr, Counter pressure - 20-25gr at the tip, Take-up torque - 40-60gr per cm (25ft), etc.

 

Thank you very much!

 

Best,

 

Erkan

[Friedemann Wachsmuth]

If I remember correctly, the "pressure plate" in the S8 cartridge actually isn't a real pressure plate, since it has a predefined distance to the gate -- even without the film.

I am not 100% sure about the specs, but I think the defined distance is between 0.013 and 0.015 mm. Kodachrome was about 0.014 mm, so it basically moved without any "pressure". The plate in the cartridge is more guiding than building up pressure.

 

If you refer to Avichrome regarding Polyester film, it is about 0,0135 (from the top of my head as well) so does not need any tweaks. I tried it in about a dozen of cameras and none of them had any issues with sharpness jitter (nor bad registration).

 

Polyester in my opinion is more suitable for the S8 cartridge than any TAC-base, since it does not remember bending. the torques needed to accelerate film that sit in the cartridge for a couple of days is much lower than the torque needed with TAC-based stocks. That actually improves registration significantly.

 

Or what are you planning? :)