Super 8 200 ft. plastic cartridges??

[Carlos8]

Where can I get some diagrams of the conventional 200 ft. plastic cartridges? (Not the Beaulieu one)
I need to know how it works, their internal construction, etc.
I will thank to anyone that can give me that information.
Carlos

[tom hardwick]

I think I still have one but I'be never seen the internal workings of it. I think the film is taken up on a big "watch" spring.

tom.

[Carlos8]

Thanks for your information!!
It works with a spring motor?
I wanna build a reloadable cartridge, but i need more information.

[#Pedro]

I?m not shure how it could work with a spring motor. I know, that the Beaulieu cameras could reverse the whole film length of these 200 ft plastic cardiges to do double exposures. But how it was possible to reverse the film, when the take-up reel is spring driven?
Pedro

[tom hardwick]

It wasn't spring driven, only a spring assist. The 200 foot of film forms a pretty hefty lump and to assist the take-up mechanism built into the camera the big cartridge had this big "escapement" spring that kept the takeup spool under tension.


I'll try and remember to open my cartridge tonight and take a look. I'll report back.

tom.