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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » P35GPS Dowser Question (Page 4)

 
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Author Topic: P35GPS Dowser Question
Manuel Francisco Valencia
Expert Film Handler

Posts: 151
From: Oklahoma City, OK, USA
Registered: Dec 2000


 - posted 09-22-2002 10:43 PM      Profile for Manuel Francisco Valencia   Email Manuel Francisco Valencia   Send New Private Message       Edit/Delete Post 
Thanks for all the information. I have received some of the new dousers and they fell a hell of a lot stronger than the old ones. I'll do a little tweaking to the machines too. Or I can always use the all purpose hammer. All the information has been great guys. Also, Brad what automation do you have?

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Brad Miller
Administrator

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


 - posted 09-22-2002 10:46 PM      Profile for Brad Miller   Author's Homepage   Email Brad Miller       Edit/Delete Post 
Personally I use the magnificent Cadillac of automations, the CA21 in my screening room. However I service many others. Why do you ask? Is there a question hiding?

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Will Kutler
Phenomenal Film Handler

Posts: 1506
From: Tucson, AZ, USA
Registered: Feb 2001


 - posted 09-23-2002 08:25 PM      Profile for Will Kutler   Email Will Kutler   Send New Private Message       Edit/Delete Post 
In my last post in this thread I made a comment about Lubriplate being a product of Detroit. I may have made a mistake...This other product has a slightly different spelling...sorry.

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Manuel Francisco Valencia
Expert Film Handler

Posts: 151
From: Oklahoma City, OK, USA
Registered: Dec 2000


 - posted 09-23-2002 10:16 PM      Profile for Manuel Francisco Valencia   Email Manuel Francisco Valencia   Send New Private Message       Edit/Delete Post 
Just wondering on what you have and where mine stands when compared to others. There is plenty of talk on which projectors, consoles, platters, etc. are the best but hardly ever automation.

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Michael Elam
Film Handler

Posts: 84
From: Clarksville, IN, USA
Registered: Mar 2001


 - posted 09-27-2002 09:31 PM      Profile for Michael Elam   Email Michael Elam   Send New Private Message       Edit/Delete Post 
The folks at Christie swear there is NO problem with their dousers, strange that one of their 'factory' techs came out couldn't get them to work but came up with a idea that would work...take the turret control and rotate it backwards so the pushbuttons are facing the
console., replace the rod with a straight one drilling a hole so it
can come straight up, you will need to replace the dovetail network
on the gear rod...it does work.

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System Notices
Forum Watchdog / Soup Nazi

Posts: 215

Registered: Apr 2004


 - posted 08-23-2006 05:48 PM      Profile for System Notices         Edit/Delete Post 

It has been 1425 days since the last post.


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Carey Barber
Expert Film Handler

Posts: 143
From: Newport News, VA, USA
Registered: Jan 2003


 - posted 08-23-2006 05:48 PM      Profile for Carey Barber   Email Carey Barber   Send New Private Message       Edit/Delete Post 
I also have a Christie P35GPS with douser issues.

I have replaced the older, warped dousers with the newer and tougher dousers (the ones with the circle in it)

The problem is that, even after replacing the douser, the blade still sticks. When the show ends, the douser is not able to drop, and the customers end up seeing a lot of junk at the end of the last reel they should not see.

I have searched thru Film Tech and read every posting I could find about this issue...

MODIFICATIONS
I do not think I will get approval from our tech for installing the Kelmar changeover. We are a 24-plex and part of a large chain, so this would be costly and they like things to be pretty uniform.

The same thing goes for the suggestion to just remove the douser completely and rewire the automation (in this case, CNA-200). I do not think I can get approval for such an alteration.

MY QUESTIONS
Are there any other hints for getting these to move smoothly? I do not see where it could be binding on anything.

Is there a 'sweet spot' for how far you put the rod and/or the flexible cable into the douser plate?

It was mentioned that you could lubricate the rod or bore the hole bigger. Has this helped anyone?

Any hints that anyone has for getting these brand-new, un-warped douser plates to work would be greatly appreciated.

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Ken Lackner
Phenomenal Film Handler

Posts: 1907
From: Atlanta, GA, USA
Registered: Sep 2001


 - posted 08-23-2006 07:42 PM      Profile for Ken Lackner   Email Ken Lackner   Send New Private Message       Edit/Delete Post 
Drilling out the hole that the douser rod goes through to make it wider and easier for the rod to slide up and down usually works wonders.

Even for simple modifications like that you should always get approval from your engineer. [Wink]

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 08-23-2006 08:08 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Also be aware that if someone repeatedly holds the C/O button down for any great lengths of time the stator of the solenoids can heat up and distort and cause exactly the same sticking problem. I've seen this a number of times but too much in the last year. The same thing can happen on Kelmar/Strong dowsers too.

Mark

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Monte L Fullmer
Film God

Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004


 - posted 08-24-2006 01:05 AM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
I've noticed that Christie has, or is getting ready to come out with an excellent upgrade to the cable drawn dowser, and that is the side swinging dowser to replace this small weakness that the P35 units have (or had..).

Saw the demo at ShoWest this last spring - an excellent upgrade, to say the least.

-Monte

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Darryl Spicer
Film God

Posts: 3250
From: Lexington, KY, USA
Registered: Dec 2000


 - posted 08-24-2006 03:14 AM      Profile for Darryl Spicer     Send New Private Message       Edit/Delete Post 
quote: Monte L Fullmer
I've noticed that Christie has, or is getting ready to come out with an excellent upgrade to the cable drawn dowser, and that is the side swinging dowser to replace this small weakness that the P35 units have (or had..).

Saw the demo at ShoWest this last spring - an excellent upgrade, to say the least.


That is actualy a design that Cinemark and Christie worked together on. It should be in the next edition of the christie parts manual. I love that dowser style. No problems at all so far.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 08-24-2006 08:33 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
The Ballantyne Pro(?)35 uses a simnilar rotary solenoid dowser design. It was not what I'd call fault proof but I still prefer this type. I just had to repair a rotary type solenoid on an FP-16. Anything is better than the stupid arrangement that Christie built inside it's projector.

Mark

P.S. Of course and as usual all of the parts for the present dowsers will suddenly become obsolete from Christie.

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Darryl Spicer
Film God

Posts: 3250
From: Lexington, KY, USA
Registered: Dec 2000


 - posted 08-24-2006 10:17 AM      Profile for Darryl Spicer     Send New Private Message       Edit/Delete Post 
quote: Mark Gulbrandsen
The Ballantyne Pro(?)35 uses a simnilar rotary solenoid dowser design. It was not what I'd call fault proof but I still prefer this type. I just had to repair a rotary type solenoid on an FP-16. Anything is better than the stupid arrangement that Christie built inside it's projector.

That's the one where after so much use the bracket that holds the solenoid either becomes loose or breaks off. I remember having to tighten or replace several of these years ago.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 08-24-2006 05:01 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Yea, I love it when they break off and fall in the rotating shutter [thumbsup] . Nice repair bill!

Mark

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Monte L Fullmer
Film God

Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004


 - posted 08-26-2006 03:49 AM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
Yea..those rotary dowsers of those "boat anchors" really suck when they love to have a mind on their own, especially with the selinoid that holds the things open.

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