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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Century SA vs JJ Gate Noise

   
Author Topic: Century SA vs JJ Gate Noise
Don Furr
Jedi Master Film Handler

Posts: 509
From: Sun City, Ca USA
Registered: Nov 2002


 - posted 02-24-2011 01:24 PM      Profile for Don Furr   Email Don Furr   Send New Private Message       Edit/Delete Post 
Sorta a dumb question but in your experience are JJ's "louder" (film noise) than SA's? I just retired my SA for a JJ-1 and the gate noise is higher than the SA. There is no excessive tension in the gate and my loop sizes are acceptable. Are JJ gates just inherently louder?

Don

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Brad Miller
Administrator

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


 - posted 02-24-2011 02:43 PM      Profile for Brad Miller   Author's Homepage   Email Brad Miller       Edit/Delete Post 
Nope. Assuming you are comparing 35mm to 35mm, something isn't right there.

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Don Furr
Jedi Master Film Handler

Posts: 509
From: Sun City, Ca USA
Registered: Nov 2002


 - posted 02-24-2011 04:43 PM      Profile for Don Furr   Email Don Furr   Send New Private Message       Edit/Delete Post 
OK Brad......I'll keep checking. Thanks.

Don

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Louis Bornwasser
Film God

Posts: 4441
From: prospect ky usa
Registered: Mar 2005


 - posted 02-25-2011 08:17 PM      Profile for Louis Bornwasser   Author's Homepage   Email Louis Bornwasser   Send New Private Message       Edit/Delete Post 
With a few exceptions, they are the same projector. Alignment is more critical with 70mm. I have found that SA/JJ are either the same or that the JJ is better. Perhaps because more care was taken during manufacturing. Same exact casting. Louis

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Sam D. Chavez
Film God

Posts: 2153
From: Martinez, CA USA
Registered: Aug 2003


 - posted 02-25-2011 09:26 PM      Profile for Sam D. Chavez   Author's Homepage     Send New Private Message       Edit/Delete Post 
In my experience, a lot of operators and techs fooled around with the gate casting to optimize it for either 70 or 35mm so it's possible to get the gate way too close to the film tension bands or the top is closer then the bottom etc,.

This assembly is not pinned so it's possible to get it way off. After that, the gate rails wear unevenly so this could be the problem.

I'll leave to Louis to describe how to set the distance and film tension properly.

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