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Author Topic: Rewind Table Tension ? Ron Crookham Film Handler Posts: 6 From: Las Vegas, NV, USA Registered: Jun 2001 posted 08-08-2001 12:28 AM                     I was wondering how much tension to apply to the drag head of my kelmar rewind table. I'm afraid of damaging the film. Is there a rule of thumb?  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 08-08-2001 07:54 AM                        SMPTE Recommended Practice RP 106 specifies "Film Tension in 35-mm Motion-Picture Systems Operating Under 0.9 m/s (180 ft/min)". Film running over sprockets should never exceed 66.7 N (15 lbf), and should normally range between 1.7 N (6 ozf) and 4.4 N (16ozf). In rewind applications, excessive tension may cause the film to wind unevenly or have "spoking". Winding with too little tension produces a loose roll that may tend to cinch. In general, wind with the least tension that still gives an evenly wound "tight" roll. ------------------ John P. Pytlak, Senior Technical Specialist Worldwide Technical Services, Entertainment Imaging Eastman Kodak Company Research Labs, Building 69, Room 7419 Rochester, New York, 14650-1922 USA Tel: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243 E-Mail: john.pytlak@kodak.com Web site: http://www.kodak.com/go/motion  |  IP: Logged

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