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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Gate Focus problem on Century Model C Projector (Page 2)

 
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Author Topic: Gate Focus problem on Century Model C Projector
Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 05-03-2007 11:03 AM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
In this case John, the advice is good for all applications.

Steve

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 05-03-2007 11:18 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Actually John.... Tim is correct on this post [Cool] [Smile] [thumbsup] ... But the best thing to do is to completely remove those guides... but don't throw them away as the tech may need to use one of them to set the gate depth(on an SA). Not only do they do absolutely nothing they also make cleaning the trap very difficult. Removing them in every case has also improved lateral steadiness since the film is not bouncing off the rails. I rarely leave them on and cleaning things gets to be alot easier.

Mark

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John Hawkinson
Film God

Posts: 2273
From: Cambridge, MA, USA
Registered: Feb 2002


 - posted 05-03-2007 11:21 AM      Profile for John Hawkinson   Email John Hawkinson   Send New Private Message       Edit/Delete Post 
I see I was unclear...I wasn't suggesting it was wrong to remove them. I was trying to say that I think it's important to say WHY. Sorry about that.

So, why is it good to remove the studio guides? What changed such that their presence became a liability, or was it just a bad engineering decision?

--jhawk

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Scott Norwood
Film God

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


 - posted 05-03-2007 12:09 PM      Profile for Scott Norwood   Author's Homepage   Email Scott Norwood   Send New Private Message       Edit/Delete Post 
Should they be removed on SAs, too? And how does one use them to set the gate depth?

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 05-03-2007 02:38 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
quote: Scott Norwood
Should they be removed on SAs, too? And how does one use them to set the gate depth?
Yes... even with the factory gauge they still can pose more of a problem than not and literally... there is no need for them except setting the 1/4" gate depth accurately. The setting is covered in the SA instruction Manual... page 15, here on F-T.

Mark

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 05-03-2007 03:54 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
Pay no attention to Mark anymore...his mind rambles...

On straight gates, the studio guides form the stop for the gate mechanism.

On rare occasions, I've had to remove one guide or the other because of film interferrence...other than that, never the need and they make sliding the aperture plate in much easier (and block light leakage). As far as guides go...I don't like em so spreading them is good enough for me.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 05-03-2007 04:07 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
quote: Steve Guttag
On straight gates, the studio guides form the stop for the gate mechanism.

Not if the machine is assembled right. The knob, in fact all Century Gate knobs should stop the gate AND lock it in place. Every Century model I've worked on is this way, even the VV machines are which are also straight gate...

Mark

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Louis Bornwasser
Film God

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


 - posted 05-03-2007 07:40 PM      Profile for Louis Bornwasser   Author's Homepage   Email Louis Bornwasser   Send New Private Message       Edit/Delete Post 
Spreading them is good enough for me, too. Part of this problem lies at the foot of Jerry Kambel who, at ORC, set every one of them to less than 35.000 mm. Louis

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Tim Reed
Better Projection Pays

Posts: 5246
From: Northampton, PA
Registered: Sep 1999


 - posted 05-03-2007 10:14 PM      Profile for Tim Reed   Author's Homepage     Send New Private Message       Edit/Delete Post 
quote: Mark Gulbrandsen
Actually John.... Tim is correct on this post
...but not on any others? [Razz] [Big Grin]

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 05-04-2007 07:22 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
quote: Tim Reed
...but not on any others?

Donno, I don't usually read your posts.....

quote: Louis Bornwasser was the last to post
Spreading them is good enough for me
Louis... you must stock those Q-Tips and tooth picks with the 90 degree bend in them!

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Amanda Mundin
Expert Film Handler

Posts: 122
From: Belper, Derbyshire, UK
Registered: Sep 2005


 - posted 05-04-2007 02:20 PM      Profile for Amanda Mundin   Email Amanda Mundin   Send New Private Message       Edit/Delete Post 
Does this also apply to the Westar 2001 too, that the studio guides should either be spread wide or removed?
Not sure if the Westar 2001 is basically the same projector as the Century C but by a different name or not, but looking at the manual it looks very similar.

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Gordon McLeod
Film God

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


 - posted 05-04-2007 08:51 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
Westrex was built under license of Century in the deal that allowed the Western Electric patents to be used in the cnetury soundhead
The Westar is better built than many centurys

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Louis Bornwasser
Film God

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


 - posted 05-04-2007 09:22 PM      Profile for Louis Bornwasser   Author's Homepage   Email Louis Bornwasser   Send New Private Message       Edit/Delete Post 
I am told that Westrex #1-50 were actually rebranded Century C. Louis

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 05-04-2007 09:36 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
My boss was for many years the US factory tech. for Westrex USA. So we do have many of the Century clones out here and a pair of Model 5000's still churning away. The amazing thing is that all of them all have their original gear trains and intermittents and all of them run like a million bucks. Back when someone actually knew how to build projectors....

Mark

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