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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Problems, not sure why. (Page 2)

 
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Author Topic: Problems, not sure why.
Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 07-07-2002 02:56 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
There is a drivein not far from Ithica NewYork that has Motiograph AA's

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Mathew Molloy
Master Film Handler

Posts: 357
From: The Santa Cruz Mountains
Registered: Nov 2000


 - posted 07-07-2002 04:28 PM      Profile for Mathew Molloy   Email Mathew Molloy   Send New Private Message       Edit/Delete Post 
Paul, that screening room still has Motiographs but does not have carbon-arc anymore.

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Paul G. Thompson
The Weenie Man

Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000


 - posted 07-07-2002 07:00 PM      Profile for Paul G. Thompson   Email Paul G. Thompson   Send New Private Message       Edit/Delete Post 
Bummer.....

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Brent Arnold
Film Handler

Posts: 20
From: Grapevine, TX, USA
Registered: Feb 2002


 - posted 07-08-2002 03:42 PM      Profile for Brent Arnold   Email Brent Arnold   Send New Private Message       Edit/Delete Post 
Well I will find out what kind of Projector Head we have.

But, our platters are on the left side of the projector... if you are facing the setup from behind.

When I was told to thread my projector, I was told to have tension to the sound head, quite a bit, so I dont get a Wobbly sound... I guess I can have a little less tension there.

I checked my gate after showing, and it was clean. But, I am thinking it could of been too thick of a splice going through. This film had sometimes 6 or 7 splices in a row(sometimes with more than one layer of tape). I couldn't figure out if it would be worse to take out that film, or leave the splices. I guess when in doubtb, next time, I will take out some of the film, so no more than one splicee goes through. I didnt think about the film not being able to flex enough.

Oh yes, I was not really trained on the projector. I had one day worth of training. I had been doing technical work (live theatre) for a while, and they assumed I didnt really need to be trained on film, so I wasnt really trained, so I was learning film for the first time, while learning how to thread this projector.

I always thread my platters with the sound towards the post, is that the correct way of doing it?

The platter deck we have is the Christie AW3.

Thank You.

Brent


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Paul G. Thompson
The Weenie Man

Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000


 - posted 07-08-2002 04:01 PM      Profile for Paul G. Thompson   Email Paul G. Thompson   Send New Private Message       Edit/Delete Post 
Brent, which way you want the sound track pointing is up to you. It depends on how the film "falls" and how severe a twist you have from the upper feed roller on the projector when you thread it up.

I prefer the sound track away from the tree on pay-out, and towards the tree on take-up. You might want to experiment on how you want to do it. Sometimes it might look like the film is fighting the rollers if the twist is in the position it does not like.

I have noticed that the film likes to flop counter-clockwise if you let it go from your fingers about 1 foot or so from the pay-out head. This appears to be a natural twist, that that is what you would like to have. That would put the sound track pointing away from the tree.

I have also noticed an occassional derail on the first roller from the pay-out head if the film is twisted towards the tree, especially those platters that don't have a keeper on them.

I never recall having a derail on that roller if I have the sound track pointing away from the tree.


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Scott Norwood
Film God

Posts: 8146
From: Boston, MA. USA (1774.21 miles northeast of Dallas)
Registered: Jun 99


 - posted 07-08-2002 04:11 PM      Profile for Scott Norwood   Author's Homepage   Email Scott Norwood   Send New Private Message       Edit/Delete Post 
Are you running soundtrack-up or soundtrack-down on the platter?

With platters, I always run soundtrack-up (emulsion out) and thread with the soundtrack side away from the post; with reels, I use the conventional "S-wind" (heads-out/emulsion-out and tails-out/emulsion-in). There are differing opinions on this, however, and it's probably best to do whatever the people you work with are doing in order to avoid confusion.

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Jan Hackett
Expert Film Handler

Posts: 148
From: Albuquerque, NM, USA
Registered: Apr 2002


 - posted 07-08-2002 08:33 PM      Profile for Jan Hackett   Email Jan Hackett   Send New Private Message       Edit/Delete Post 
Definitely in agreement with group here...a bad splice or series of close together slices will cause you to lose loop.....Had it happened too many times.....I can hear the sound it makes when it goes thru the intermittent and winds tight agains the roller..........ouch........

------------------
Jan Hackett
Theater Operations Manager
Extreme Screen Dynatheater
NM Museum of Natural History Foundation

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Brent Arnold
Film Handler

Posts: 20
From: Grapevine, TX, USA
Registered: Feb 2002


 - posted 07-08-2002 09:14 PM      Profile for Brent Arnold   Email Brent Arnold   Send New Private Message       Edit/Delete Post 
Ok I am starting to believe it is a bad splice.

I run sound up on the platters.

-Brent

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Frank Angel
Film God

Posts: 5305
From: Brooklyn NY USA
Registered: Dec 1999


 - posted 07-10-2002 11:56 PM      Profile for Frank Angel   Author's Homepage   Email Frank Angel   Send New Private Message       Edit/Delete Post 
Brent,

You may be inexperienced; because of the way you were thrown in the booth, the lack of training obvously isn't your fault. But brent, you have the right stuff. You are caring enough to want to run a perfect show and humble enough to ask questions when you don't have the answers yourself. Congratulations -- you will make a great projectionist.

Try to get your hands on all manuals for the each piece of equipment in the booth. Those manuals are usually stashed away SOMEWHERE in the theatre. There is a wealth of manuals right here on Film-Tech. Read as much as you can and, as you can see from the posts here to your questions, there are others of us who have been around the block a few times (and up and down the stairs to the booth even more) who are happy to give you any help we can. Pick our brains; when you come in contact with other projectionists who you think are knowledgeable, don't be afraid to pick their brains.

Thing is, don't get discouraged --we've all had stop-stoppers. John mentioned film playing out on the floor instead of on the take-up reel. It's happened to all of us. In a booth I worked at, before they got a supply of good aluminum "house reels," we had to use those old bent up sheet metal shipping reels. No matter how meticulously you tried to get the kinks out of those metal flanges -- bending them with plyers and wacking them with hammers, they were always one revolution away from jamming in the magazines -- which is why we ran with the magazine doors tied opened. And when we DID look over only to see 10 minutes of film piled up on the floor all around the projector, we quickly learned how to run to get a better reel, swap it out with the problem reel, find the end of the film, threading it into the new empty reel and feed all the film that had collected on the floor BACK onto the new reel -- all without stopping the show!

Tricks you learn by being there, doing it, and then tucking the fixes that you discover by trial and error in the back of your brain for future reference. Next thing you know, you will be posting your favorite tricks and tips and weird experiences here instead of asking questions.

One thing, though, when you get a print of a classic film like DR ZHIVAGO, you have to keep in mind that, unlike any new film that might be in current release that you might run, these classics probably have only a handful of prints, and it's not very likely that more prints will be struck any time soon. So when they come into your hands, you become more of a curator than a projectionist. It becomes supremely important to handle these precious classics with special care. Whereas with a print that is in current release, you may side with cutting damage out; with a rarer classic print, you always want to side with KEEPING frames rather than cutting them out, and still making as good a repair as possible. Try to take as conservative an approach as possible with film repair. Almost any damage can be repaired with the right tools and today's technology, even though the average theatre may not be able to do much more than cut and splice. In the hands of a film preservation house, that same multiple spliced footage most likely can be made runable. If you do think a series of splices or damaged sprocket holes might not run through your projector and you opt to cut the section out, then at least put the damaged film back in the can, roll it neatly if it is a long section or place it in a manila envelope if it is just a few frames, so that either the distributor or the next art house can opt to make a more substantial repair when they get the print. And don't be afraid of multiple splices in a row. They may look scarry, but if they are properly made, they will run through any well maintained projector head. And no doubt, very soon you will be able tell if a piece of film with splices will play, just by looking at them and feeling with your hand.

Usually the real problem with splices is that they have been cut with misaligned splicers so that when the two frames are butted against each other in a correctly aligned splicer, there is a minute gap and the two film ends do not support itself each other at the joint. This will cause the film to "fold" at the joint a make that WHACK sound as it goes through the gate. Lots of stress is created at that splice and sooner or later it will snag or jump as it enters or exits the gate (and who knows what happens as it journies in those platter contraptions ). There are even tricks to help such poor splice joints other than cutting out and loosing a frame.

So keep up the good work. And continue to ask questions. There isn't anything that will do a guy in faster than thinking he knows it all.



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Paul Turner
Expert Film Handler

Posts: 115
From: Corvallis, OR, USA
Registered: Apr 2001


 - posted 07-11-2002 12:33 AM      Profile for Paul Turner   Email Paul Turner   Send New Private Message       Edit/Delete Post 
As a single screen art house (that runs and loves its Motiograph AA, 9030, and Lume-X), we play a lot of films that are other than "fresh from the lab." One of the common frame slippers we get is people who somehow got the idea to splice on only one side of the film. If they don't peal apart, they can flap like crazy. It's getting so you have to ck for more than just the presence of a splice . . . .

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Leo Enticknap
Film God

Posts: 7474
From: Loma Linda, CA
Registered: Jul 2000


 - posted 07-11-2002 04:52 AM      Profile for Leo Enticknap   Author's Homepage   Email Leo Enticknap   Send New Private Message       Edit/Delete Post 
The bottom line is that older prints need extra care for three reasons:

1. Because (assuming the print is triacetate) the film base itself will be physically more fragile than newer stock. As it deacetylates it becomes brittle, and it may also have shrunk slightly.

2. Becuase it will have received a lot more handling, some of it from people who don't know and/or care how to handle film properly. The result will be physical defects (e.g. faulty joins or damaged perforations) which need to be repaired before the print will run without breaking.

3. Because the picture and/or sound format may be an unusual and non-standard one, which you will need to be able to recognise.

Once you're able to put on a good, reliable show with a 1970s print the new releases will seem like kids' stuff...

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Brad Miller
Administrator

Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99


 - posted 07-11-2002 05:29 AM      Profile for Brad Miller   Author's Homepage   Email Brad Miller       Edit/Delete Post 
Brent, you're only in Grapevine. Tell me what theater you are at and I'll make arrangements to swing by sometime and give you some tips, or come visit me at a theater in the Dallas area. Email me.

Also, if you get a used print that has a bunch of ID frames spliced together on the leaders, never EVER run those through a projector! Always peel the tape off of the last solid frame and splice there, leaving the fanfold menagerie of ID frames on the leader. You are just begging for problems by running those and are doing your customers a disservice, as one quick jump in the action is far less annoying than seeing a bunch of horribly mis-registered frames and loud pops in the soundtrack as they run through.

Regarding the AW3, there is less of a twist if when running soundtrack up if the soundtrack always and without fail faces the tree. Most other platters are happier when the soundtrack is turned away from the tree on payout. However if the film is derailing on an AW3 when twisted in this manner, the rollers on the post are not aligned properly. A quick comparison of the film threaded both ways while standing directly opposite the tree will reveal the twist is less when the soundtrack is toward the tree.

Also, in almost every instance, if the platter is on the non-operator side of the projector, the soundtrack should be AWAY from the screen to and from the projector. There is an age old "law" that says the film must be twisted so that the soundtrack points toward the screen when it is traveling to the projector, but pointing away from the screen when returning. This is just stupid, as if the platter is perfectly and exactly aligned beside the projector, the film will do a 90 degree twist which means neither way matters. However in almost every instance I see the platters are just a bit farther back from the wall than the upper magazine roller of the projector is, which means that to put the least stress on the film, you want that soundtrack away from the wall at all times.

Also, upper magazine rollers should always be aligned directly above the input roller, for rollers that are swung outward toward the screen must be angled. This angling can cause scratching if not aligned perfectly and wears out the threading leader many times faster than a roller that is aligned so that the film travels directly downward. Remember that it is common to find one brain on a platter exhibits a bit more back-tension than another, so an angled roller can only be properly aligned to one brain. Also, any bounce coming from the platter on payout can cause the film to intermittently scratch on a roller flange. This is why I detest seeing rollers set up in this manner, yet damn near every installation I see they are done like that. There is no excuse for that sort of nonsense. The only way to guarantee that regardless of how bad the bounce is or what the back-tension is that the film will not get damaged is for an upper magazine roller to be straight up and down. Of course the lower roller doesn't matter how it is angled because the platter will always pull with the same amount of tension.

Below is a good alignment


Below is a bad alignment



Regarding the regular threading of a platter to minimize twists, I can take some pictures for you if you need.


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Mike Jones
Expert Film Handler

Posts: 108
From: Birmingham, MI, USA
Registered: Jul 2000


 - posted 07-12-2002 12:04 PM      Profile for Mike Jones   Email Mike Jones   Send New Private Message       Edit/Delete Post 
Brent, did anyone reply w/ how to adjust the pad roller clearance? I've seen this problem a few times in the past and knew right away it what it was.

i agree, could have been a bad splice, or maybe a "fat" splice with multiple layers of tape??

to adjust: attached to the pad roller arm is a screw with a nut on it. losen the nut, and back off the screw so the gap isn't so large. the distance should fit two layers of film (not too snug, not too lose). play w/ it.

Mike

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Christopher Seo
Jedi Master Film Handler

Posts: 530
From: Los Angeles, CA
Registered: Jun 99


 - posted 07-12-2002 01:21 PM      Profile for Christopher Seo   Email Christopher Seo   Send New Private Message       Edit/Delete Post 
Just to clarify... with a JJ, the above instructions apply to the pad roller for the lower feed sprocket only (sprocket right after the intermittent sprocket). The other two pad roller assemblies can be adjusted by loosening the 3 equal-spaced mounting screws at the back of the assembly (where it mounts in the main casting) and wiggling the entire assembly back and forth.

To identify a Century JJ... the most obvious is that it has dual 35/70 sprockets. The two rows of 35mm teeth are inside the two rows of 70mm teeth, and recessed a bit.

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