Practical work on the idea of 8mm wide film without sprocket holes to make more room for the frame images. Diagram attached. Here my dead old Sankyo 620 Super-8 camera moves film again with a stepper motor drive repurposing the pinch roller sound drive. Testing here using outdated film with sprocket holes which gives a measuring standard to check out the movement. The “drift” effect is expected. What we are looking for is a smooth steady drift.
There are 2 test cartridges. The other one gives “rough drift” and from that I learn that the Nema 11 stepper motor is running with only just enough torque. I need to evaluate Nema 17 or the physically longer higher torque version of Nema 11. “Rough drift” video:
Photos:
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| About Mod-8mm |
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Home website:
https://mod-8-film.com
Previous post with discussion:
https://www.facebook.com/groups/27648968851/posts/10166353821123852
This post with discussion on Facebook Group "Super 8"
https://www.facebook.com/groups/27648968851/posts/10166569538353852
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