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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » How do I time the Christie AW3 Platter without a rpm meter (Page 1)

 
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Author Topic: How do I time the Christie AW3 Platter without a rpm meter
Michael Dolan
Film Handler

Posts: 77
From: Deerfield Beach, fl.
Registered: May 2008


 - posted 05-27-2008 06:15 PM      Profile for Michael Dolan   Author's Homepage   Email Michael Dolan   Send New Private Message       Edit/Delete Post 
I was told in order to properly time the Christie AW3 platter system you had to have an RPM meter I was wondering if anybody new of another way to do it.

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Monte L Fullmer
Film God

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


 - posted 05-27-2008 06:25 PM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
You can print this Manual out on the AW3 for your reference.

20+1 Rpm is factory norm. 5 rev per 15 seconds is close enough. Put a mark on the deck and begin counting.

good luck

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Galen Murphy-Fahlgren
Master Film Handler

Posts: 405
From: Canton, MI, USA
Registered: Oct 2007


 - posted 05-27-2008 06:32 PM      Profile for Galen Murphy-Fahlgren   Email Galen Murphy-Fahlgren   Send New Private Message       Edit/Delete Post 
I use two Christie P/N 196363s (Bevan-Poo, I believe they call it) and my wristwatch. Put one Bevan-Poo closer to the middle to avoid it being thrown, and stick another in the brain to hold the arm at the proper position.

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Brad Miller
Administrator

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


 - posted 05-27-2008 06:43 PM      Profile for Brad Miller   Author's Homepage   Email Brad Miller       Edit/Delete Post 
here

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Sean McKinnon
Phenomenal Film Handler

Posts: 1712
From: Peabody Massachusetts
Registered: Sep 2000


 - posted 05-28-2008 10:52 AM      Profile for Sean McKinnon   Author's Homepage   Email Sean McKinnon   Send New Private Message       Edit/Delete Post 
I use the RPM meter religously. I have not seen a Christie platter timed as perfect without using it. It is really worth it in my opinion, I wouldn't time a Christie platter without it!

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Mike Olpin
Chop Chop!

Posts: 1852
From: Dallas, TX
Registered: Jan 2002


 - posted 05-28-2008 08:09 PM      Profile for Mike Olpin   Email Mike Olpin   Send New Private Message       Edit/Delete Post 
The timing is easy to achieve with just a piece of tape placed at the edge of the deck and a stop watch. Simply count the number of times the tape passes the mast in a given duration. Does not have to be perfect to the mark, just fairly close. I'm good to about a quarter of a revolution.

The timing suggested on Brad's link yields excellent results, especially if you find your platter acts a little "jumpy" when calibrated to Christie's specifications.

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Joe Redifer
You need a beating today

Posts: 12859
From: Denver, Colorado
Registered: May 99


 - posted 05-28-2008 08:15 PM      Profile for Joe Redifer   Author's Homepage   Email Joe Redifer   Send New Private Message       Edit/Delete Post 
Just buy a Film-Tech Platter Safety Ring and crank both the High and Low trimpots up to 100%! [Wink]

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 05-29-2008 11:25 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
quote: Sean McKinnon
I use the RPM meter religously.
I do too, especially in a complex full of AW-3's. My boss prefers a digital tach but I can get through timming three platter systems by the time he's done farting with the first one. Although the Christie Tach has a fairly high end Stewart Warner movement I still double check the calibration on mine(against his digital readout one) every couple of months just to be sure its correct.

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Tristan Lane
Master Film Handler

Posts: 444
From: Nampa, Idaho
Registered: Feb 2002


 - posted 05-30-2008 04:10 AM      Profile for Tristan Lane   Email Tristan Lane   Send New Private Message       Edit/Delete Post 
Grainger Tach

Even thought the tach has a "Westward" brand name, it was assured to me by a grainger rep that it was in fact, made by SW and is the exact same animal that Christie minus the branding.

You can order the tach from Grainger, and then give Jim Graton a call at Christie to get the drive wheel and bushing part#'s for the tach. I've had to call him a couple of times about this part number (I wish I'd written it down somewhere)

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 05-30-2008 07:42 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
But does it have the correct diameter rubber contact wheel on it's input shaft?

Mark

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Sean McKinnon
Phenomenal Film Handler

Posts: 1712
From: Peabody Massachusetts
Registered: Sep 2000


 - posted 05-30-2008 05:22 PM      Profile for Sean McKinnon   Author's Homepage   Email Sean McKinnon   Send New Private Message       Edit/Delete Post 
quote: Tristan Lane
and then give Jim Graton a call at Christie to get the drive wheel and bushing part#'s for the tach

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Monte L Fullmer
Film God

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


 - posted 05-31-2008 01:46 AM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
Christie Taco-meters cost less than these Grainger units and include a real time wheel, or the two times rpm wheel.

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Tristan Lane
Master Film Handler

Posts: 444
From: Nampa, Idaho
Registered: Feb 2002


 - posted 05-31-2008 04:19 AM      Profile for Tristan Lane   Email Tristan Lane   Send New Private Message       Edit/Delete Post 
Monte, I'm not sure that's correct. Last time I price them, the Christie tach was priced at over double the grainger tach (drive wheel included)

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Ken Lackner
Phenomenal Film Handler

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


 - posted 05-31-2008 08:05 AM      Profile for Ken Lackner   Email Ken Lackner   Send New Private Message       Edit/Delete Post 
What is a Taco meter? Do they make a Burrito meter as well?

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Sean McKinnon
Phenomenal Film Handler

Posts: 1712
From: Peabody Massachusetts
Registered: Sep 2000


 - posted 05-31-2008 09:21 AM      Profile for Sean McKinnon   Author's Homepage   Email Sean McKinnon   Send New Private Message       Edit/Delete Post 
Also just FYI the meter I used to have which I think was from Grainger required that you multiply the reading by 2 to get an accurate RPM reading for the AW3, If it said ten RPM, that was really 20 RPM.

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