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Topic: Christie "Ultra"mittent

David Whitbeck
Film Handler

Posts: 70
From: Tempe, AZ
Registered: Jun 2001

posted 05-15-2002 03:00 PM

The pad on one of our ultramittents is eating at the edges of our film. Spidey is quite the mess now and Star Wars is soon to follow if I don't get this fixed now. I think I just need to move the whole pad assembly up but there are bolts in the ultramittent where I believe it should go. So, would it be okay if I pulled these two bolts and put the pad assembly there? It looks to me that that is the spot at which the assembly is mounted on the other Chrisie we have so I think this one is wrong. If I pull these bolts, will I devastate my ultramittent. This is on a P35C. Need to know before midnight if possible. Thanks.

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David Whitbeck
Film Handler

Posts: 70
From: Tempe, AZ
Registered: Jun 2001

posted 05-15-2002 07:18 PM

I see that nobody wants to help...

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Matthew Bailey
Master Film Handler

Posts: 461
From: Port Arthur,TX
Registered: Sep 2000

posted 05-15-2002 07:28 PM

I don't think removing the bolts would destroy the ultramittent.
Ultramittents are sealed. I think it wold be as much as removing the intermittent sprocket motor from a Kinoton.

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Steve Kraus
Film God

Posts: 4094
From: Chicago, IL, USA
Registered: May 2000

posted 05-15-2002 07:40 PM

Isn't that the same as a Simplex pad?

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David Whitbeck
Film Handler

Posts: 70
From: Tempe, AZ
Registered: Jun 2001

posted 05-15-2002 09:01 PM

Yeah, it seems to be mostly the same concept as on a Simplex. My problem is that the whole assembly sits too low on the ultra. I just tried it, but I don't have long enough bolts to remount the assembly higher up. So, it looks like I'm screwed at this point. The bottom tips of the pad are eating my film. Maybe there's another solution?

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David Stambaugh
Film God

Posts: 4021
From: Eugene, Oregon
Registered: Jan 2002

posted 05-15-2002 09:51 PM

I suspect many of the f-t regulars are kind of busy tonight, hence the lack of replies. ? Surely someone here would have some advice. Have you checked in the Manuals and Tips section? Just a suggestion...

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Randy Stankey
Film God

Posts: 6539
From: Erie, Pennsylvania
Registered: Jun 99

posted 05-15-2002 10:26 PM

On the Christie Ultramittents I worked on there was a black, banana shaped bracket that screwed onto the Ultramittent. Remove those two allen screws and the whole unit, pad shoe and all would come off.

Be careful, though!! Those screws will strip out in a heartbeat. make sure you use the EXACT SIZE Allen wrench to remove them. Be sure the wrench is all the way down into the hole and that it's perfectly straight when you try to turn it.

I have had to deal with many a stripped out screw head from people tinkering where they had no business. If you try to tackle this job do it with deliberate speed... Take it slow and one step at a time.

Now that you have it off you can work on the unit as a whole... replacing or realigning any parts you need to. Put it back on the same way you took it off but in reverse.

I don't believe that you should remount the bracket in another place. It's meant to go on in a certain way. Take the bracket/assembly over to another projector and compare the two.
Is anything bent? Out of place? Put on backwards/incorrectly?
How about seeing if it's just plain worn out? Some Christies have pad shoes that need to be replaced from time to time because they wear down. They are made out of this plasticy material. If they wear down they need to be replaced.

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David Whitbeck
Film Handler

Posts: 70
From: Tempe, AZ
Registered: Jun 2001

posted 05-16-2002 02:45 AM

The pad shoe seems to be perfectly fine. I have compared it to another one of our projectors and it is in fact mounted lower down on the ultramittent in comparison to the one that does no harm to the film. I'm fairly positive that moving it up will take care of the mess. I don't see that there would be a problem in doing this since the other projector is the exact same model, just with the pad shoe assembly mounted one bolt higher.

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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000

posted 05-16-2002 08:07 AM

Here's the manual:
http://www.film-tech.com/manuals/CHRP35GPS.pdf

Here's the parts list:
http://www.film-tech.com/manuals/CPROJECTORSPL.pdf

------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Research Labs, Building 69, Room 7525A
Rochester, New York, 14650-1922 USA
Tel: +1 585 477 5325 Cell: +1 585 781 4036 Fax: +1 585 722 7243
e-mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 05-16-2002 03:32 PM

I'd get the new style delrin pad from Christie to replace it with. They are far easier on film.

That assy can be removed easily with the exact allen wrench size. Just do not remove any of the Blue Goo covered screws. Those hold the front of the movement to the back!
Mark @ GTS

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David Whitbeck
Film Handler

Posts: 70
From: Tempe, AZ
Registered: Jun 2001

posted 05-16-2002 09:37 PM

This isn't a P35GPS, it's a P35C. Will the parts be the same? It's kinda funny cause there aren't any of the goo screws that you're talking about, must've been worked on previously. I actually flipped the pad around and it seems to be helping a little, I'll have to see after a couple more shows if it was effective.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 05-17-2002 08:30 AM

Yes, the parts are all the same. The only differences are inside the movement.
Mark @ GTS

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David Whitbeck
Film Handler

Posts: 70
From: Tempe, AZ
Registered: Jun 2001

posted 05-18-2002 12:42 AM

Well that's one helluva upgrade from C to GPS. I guess it works. Anyway, I will look into those delrin pads that were mentioned and see if it helps. Thanks guys.

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David Whitbeck
Film Handler

Posts: 70
From: Tempe, AZ
Registered: Jun 2001

posted 05-18-2002 02:07 AM

And by the way, by flipping that pad around, I've seemed to have reduced the wear to the film, but not gotten rid of it. The only reason for this is that one end of the pads are a bit sharper than the end, less of a curvature.

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