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Author Topic: Film Raising on Platter Joe Redifer You need a beating today Posts: 12859 From: Denver, Colorado Registered: May 99 posted 07-07-2009 01:51 PM                        I had a print recently that had similar damage. It laid flat on the platter, but it was very spongy and a bit unsteady onscreen, but not so much that people would likely complain. Since we have Simplex projectors and Strong platters, what likely had happened is that someone went to engage the rewind deck, let it "crash" and that pulled the tension on the bottom sprocket too tight. I had to replace the damper because it was slightly bent.  |  IP: Logged Jeremy Weigel Phenomenal Film Handler Posts: 1062 From: Edmond, OK, USA Registered: Mar 2007 posted 07-07-2009 04:31 PM                     We received a used print of Hangover that must have come from a reel-to-reel operation (the tail on the 3rd reel wasn't cut) that had their tension set too high and slightly damaged the leading edge of the sprocket holes. This caused the film too wind very loose and buckle inwards like in Randy's pic. The film did play steady, but I went ahead and had it replaced.  |  IP: Logged Matt Young Film Handler Posts: 36 From: Kearney, NE, USA Registered: Jun 2009 posted 07-07-2009 06:48 PM                        The film is rewinding nice and tight on the platter deck. Next run I'll check to see if the film is damaged in certain places like some of you have said. I'f I dont find anything, I'll try winding it head down on the platter and report back. thanks for the help thus far!  |  IP: Logged Mike Moreno Expert Film Handler Posts: 200 From: culiacan sinaloa mexico Registered: Jul 2008 posted 07-08-2009 10:59 AM                        i have big sky platters and this problem hapend when the center of the plater is a little lose or the bearing is broken. anotherthink you can check is the last roller in the take up system of that platter, you can move it up and down, it has 2 allen screws.  |  IP: Logged Matt Young Film Handler Posts: 36 From: Kearney, NE, USA Registered: Jun 2009 posted 07-08-2009 12:19 PM                        ok, I checked the film last night when it was running through and some of the film is actually damaged. the edge opposite the sound head felt slightly rolled, that must be causing it to raise like it does like some of you said. I'll check all the pad rollers, pinch rollers and such and make sure everything is in spec.  |  IP: Logged Dan Reiter Film Handler Posts: 74 From: Easton PA Registered: Jul 2002 posted 07-08-2009 01:52 PM                     Check the alignment of the feed roller that guides the film onto the deck. Also check for any tension in the rollers or the slider itself, it looks like it's wrapping too tight.  |  IP: Logged Matt Young Film Handler Posts: 36 From: Kearney, NE, USA Registered: Jun 2009 posted 07-08-2009 05:06 PM                        Feed roller alignment - Check!... Slider roller tension - Check! I'll go back and check the pad rollers, that's the only thing I can think of that would have done this...  |  IP: Logged Jeremy Weigel Phenomenal Film Handler Posts: 1062 From: Edmond, OK, USA Registered: Mar 2007 posted 07-08-2009 05:30 PM                     Just out of curiosity, did your print of Star Trek rewind this way during its run through after it was built up? If so, the damage could have happened on the make-up table.  |  IP: Logged Matt Young Film Handler Posts: 36 From: Kearney, NE, USA Registered: Jun 2009 posted 07-08-2009 05:51 PM                        Star Trek didnt start doing this until we moved it to this auditorium (#8). Before that it always ran perfectly fine, so I know nothing happened on the make up table  |  IP: Logged Randy Stankey Film God Posts: 6539 From: Erie, Pennsylvania Registered: Jun 99 posted 07-08-2009 08:51 PM                     Assume you know how to adjust pad rollers. Yes? In my experience it is either the first sprocket (upper feed sprocket) or the very last (soundhead) sprocket that is the culprit. If it was the intermittent sprocket that was jumping the track the picture wouldn't play right, if at all. If it was the constant speed sprocket after the intermittent your sound would likely go out of whack. Out of the remaining two, if it was the bottom sprocket the failsafe would be likely to fail. Therefore, my main suspect would be the upper feed sprocket at the top of the projector. The most likely cause would be a misthread or a maladjusted pad roller. A crummy splice or a broken sprocket hole can also cause the film to jump the track. These are not the only things that can cause this kind of problem but in my experience of cleaning up messes left by other people this would be my first suspect. The shitty thing is that the problem might not happen all the time. Either a slightly maladjusted pad roller or an inexperienced operator who makes this mistake infrequently can make it appear like the problem comes and goes. One day all your film will be perfect. The next, you'll come to work to find a damaged print. Then, once you think you have solved the problem, it will disappear for several weeks only to appear again when you least expect. (Most likely on a Friday night with a packed house... Thank you Mr. Murphy! )  |  IP: Logged John T. Hendrickson, Jr Jedi Master Film Handler Posts: 889 From: Freehold, NJ, USA Registered: Apr 2001 posted 07-09-2009 07:23 AM                     I once experienced another cause of sprocket damage. I came in one morning and noticed one of our prints looked like a wet noodle, but the trailer pack was wound properly and the damage did not begin until the beginning of the feature. After inspection, I found the cause. The person who made up the print had placed a long piece of cue tape over both sides of the film, completely covering the sprocket holes. You could see right where the tooth marks dented the tape and then ran off onto the area between the sprocket holes. So, when it hit the first sprocket, the teeth did not punch through, the film jumped, and left sprocket tracks on the whole print. Cue tape should be attached so that it does not cover the sprocket holes and cause this type of problem.  |  IP: Logged Justin Gorka Expert Film Handler Posts: 174 From: High Wycombe, England Registered: Apr 2006 posted 07-09-2009 12:39 PM                     Sprocket run off..why the waffle?  |  IP: Logged

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