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Recent content by Don Warr

  1. Don Warr

    Pinch Rollers Whats going on with my model

    I may have used the wrong term "pins" but the "axel pin thing" I have, was designed by Philips to be used in the transport of the film using the sprocket holes... And it works, But badly for old film... There is a "HIGHLY expensive" machine made for Library's, who's main design is to protect old...
  2. Don Warr

    Pinch Rollers Whats going on with my model

    Yes, "3DDave" I have 2 different diameter shafts with pins that are especially for the sprocket holes, and that works but have found they have no "give" and can and usually damage or break 40 year old Supper 8 film.. We had one Pinch roller prototype, like in the picture I posted, that worked...
  3. Don Warr

    Pinch Rollers Whats going on with my model

    Thanks, Compositepro Your answer makes good sense,,, I'm an Electronics Engineer not mechanical, but I'm trying to make this work... I can easily change the design and TRY the metal stepper shaft, lowering parts count.. I just thought 2 rubber rollers would be better..(NOT),,, Speed is not a...
  4. Don Warr

    Pinch Rollers Whats going on with my model

    I have 2 rollers of the same thickness (5mm) made of TPU98(soft rubber)... They are to move 8mm Supper 8 film pinched between them.. The Idler roller is 23mm diameter and can be forced against the main roller using a 3mm screw.. the main rollers diameter is larger at 30mm and is being driven by...
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