This is topic sticky intermittent on westar 2oo1 j/3 in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.
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Posted by Gary Martin (Member # 1053) on 11-28-2001, 04:18 PM:
an intermittent unit on my westar is giving me trouble at one of my sites when the mech is not running you cant rack it up or down more than 5mm but when the mech is running you can move it maybe 7-8mm either way any ideas by the way this is the most interesting site and most informative site i have found on the net my wife hates it as i have spent countless hours since i was logged in looking through 1000s of posts keep up the good work
Posted by Matthew Bailey (Member # 601) on 11-28-2001, 06:13 PM:
Are you referring to the framing mechanism that rotates the
intermittent? It's most likely the framing mechanism,not
the intermittent itself. Does the Westar use a Century framing mech?
Some of the Westars use a Century framing mech. The parts are maybe too tight,misadjusted or something is obstructing them.
Posted by Gordon McLeod (Member # 33) on 11-28-2001, 07:06 PM:
There is a possability that the vertical shaft has gotten bent
Posted by Mark Gulbrandsen (Member # 72) on 11-28-2001, 07:15 PM:
Examine the area where the verticle shaft goes through the intermittent drive gear. It is likely that the lube that was in there has turned to goo and the thing has frozen up a bit. This should be attended to by a qualified service tech as if the shaft is not yet bent you can easily do so by improper disassembly methods.
Mark @ GTS
Posted by Gordon McLeod (Member # 33) on 11-28-2001, 07:52 PM:
Also check the Key in the vertical shaft that the drive asembly is on to make sure it hasn't gotten nicked/burred/gouged
Posted by Jonathan Worthing (Member # 803) on 11-29-2001, 03:26 AM:
The intermitant drive gear( Fiber gear on vertical shaft behind fly wheel) may need lubricating. On older Westars I have seen these lock solid.Remove the fly wheel an just have a look at the vertical shaft.
If You know how to take out an refit the intermittent, remove it & you may get the gear moving the full rack.
Posted by Pete Naples (Member # 761) on 11-29-2001, 08:03 AM:
Mathew, the Westrex Westar 2001, one of which I'm leaning on in my picture, is almost a carbon copy of the Century, the early Westar Projectors carried a plate which read 'made under licence from the Century projector company New York'. The framing mech and intermittent are different, but are cross compatible. If you fit a Century intermittent into a Westar you will not have full framing adjustment, you have to modify the intermittent carrier (I think that's right, but it's been a while since I've done this).Garry, the most likely cause for your problem is that the sliding area of the vertical shaft has run dry. If you look at it as described above, you'll probably find it's black and sticky, or worse, red with rust. The sliding area is the section of the shaft exposed as you move the framing knob up and down. Don't be tempted to blart it it WD40 to unstick it. It will unstick it, but the dried grease and bits of shaft, rust, dirt etc, which get into the bore of the gear will form a lovely abrasive, and in no time at all you'll start to have ghosting, which no amount of shutter adjusting will get rid of, the reason being that the key and keyway in the sliding gear are now worn away, requiring a new vertical shaft assembly. What you need to is to remove the shaft and strip it down, cleaning and re-greasing thoroughly, or have an engineer visit and do this.
Point of interest. Once upon a time Westrex supplied specific lubricant for this area of the shaft, known as 'anti-fret' grease. Did Century ever do this? If so is it still available?
Posted by Gordon McLeod (Member # 33) on 11-29-2001, 03:41 PM:
I have always wondered what that anti fret greese was
Posted by Matthew Bailey (Member # 601) on 11-29-2001, 07:37 PM:
I had to change out the entire vertical shaft assembly once on my Simplex 1014. While I was at it, I cleaned the star & cam &
the framing gearing,reinstalled the intermittent & retimed & readjusted the shutter.
Posted by Mark Gulbrandsen (Member # 72) on 11-29-2001, 10:31 PM:
You guys have all just learned why it is so importamt to use synthetic oils and grease!! Had it been utilized, the likely hood of this happenning in the first place would have been around 0.
Mark @ GTS
Posted by Francis Casey (Member # 514) on 11-30-2001, 09:08 PM:
So Mark , what type and brand of syn grease do you use on Century projectors ? thanks
Francis
Posted by Gordon McLeod (Member # 33) on 12-01-2001, 01:03 PM:
The original Westrex 5000 specs were for the use of a molyibdinum disulpahte greese on most parts
Century greese is Vasaline (the MSD sheet states Petroleum Jelly)