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Author Topic: scratches- what am I missing?? Barry Hans Film Handler Posts: 92 From: Minneapolis, MN, USA Registered: May 2000 posted 01-24-2002 11:05 PM                        I am getting some light horizontal scratching on the inboard or non soundtrack side of film. This is a two projector booth with Century "c"'s and r3 sound heads and Kelmar arms. The problem is happening on one projector. It is happening on the base side ( if I am remembering right the base side is against the trap right? ) and goes from sprocket hole to just into the image area. I've checked pad rollers, the adjustment is good ( 2 film thickness clearance), the trap is good without burrs, although there is slight movement back and forth with my trap tool. Gate pressure is good- film slides through trap smoothly. The lateral guide roller on the sound head is spinning freely and everything is lined up well. What am I missing?? Nothing is jumping out as a probable cause and I'm kinda looking at the projector scratching my head. Any ideas?  |  IP: Logged Stan Gunn Expert Film Handler Posts: 176 From: Clematis, in the hills near Melbourne Australia Registered: Aug 2000 posted 01-24-2002 11:29 PM                        Looks like a rewinding problem to me, the film is rubbing on the side of the spool as the is being rewound. Or the takeup or supply spools are out of line causeing the film to rub on the spool edge. ------------------ ALL PARTS FOR VICTOR AND KALART VICTOR 16MM PROJECTORS. SERVICE TO 35 AND 16MM PROJECTION EQUIPMENT. 35MM Sprockets made to order.  |  IP: Logged Barry Hans Film Handler Posts: 92 From: Minneapolis, MN, USA Registered: May 2000 posted 01-25-2002 12:37 AM                        I thought about rewind also. But when I ran a unrun preview on a 20min. house reel and hand rewound it is still happening. Also it is only happening on one of the two machines. The film runs off and onto reels in a good straight path with equal contact to roller flanges on take- up and feed arm rollers and the rollers spin easily with no flat spots.  |  IP: Logged Stan Gunn Expert Film Handler Posts: 176 From: Clematis, in the hills near Melbourne Australia Registered: Aug 2000 posted 01-25-2002 01:01 AM                        Horizontal scratches are of course made by the film moveing sideways or something in the film path rotating against the film. Could you please describe the marks in more detail. Do they get worse as the screening numbers increase? ------------------ ALL PARTS FOR VICTOR AND KALART VICTOR 16MM PROJECTORS.SERVICE TO 35 AND 16MM PROJECTION EQUIPMENT. 35MM sprockets made to order.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 01-25-2002 06:55 AM                     Check your pad roller clearances  |  IP: Logged

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