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Topic: Aerated Oil

Louis Bornwasser
Film God

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

posted 08-10-2005 05:46 PM

Of all the projectors, the Simplex "XL" is the easiest to overhaul; however, as stated above it is another matter to do it well.

My company(Hadden Theatre Supply)also does this work. Our fully rebuilt Simplex intermittents were installed at Universal in the quality control room for the "Grinch."

Louis

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 09-03-2005 10:30 AM

We have been testing a new oil recently based on reccomendations from Chevron. Its called GST oil and is available in the same ISO weights as Capella and other normally used oils for Simlpex and Century and ohers. This oil is working remarkably well and doesn't exhibit the high foaming levels that Capella and other oils do. Its also one of the purest oils I've ever worked with in these ISO weights.... its so clear that when glancing at the the sight glass it look like the projector is filled with water. All that this oil contains as an additive is an anti-rust inhibitor and nothing else at all. On X-L's that had a tiny bit of clicking noise in the movement that noise all but disappears after an hour or so of running with GST oil.

BTW: GST oil is basically a high speed turbine oil that was formulated for power plant turbines and maritime use in ships reduction gearing so obviously its an excellent oil and it also has a very very long life, far longer than any of the Capellas. GST is also approved for limited non-contact food service use which tells me that its also not as dangerous an oil to handle as Capella is.

Has anyone else out there used this oil in projectors yet???
GST OIL

LINK -2

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Louis Bornwasser
Film God

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

posted 09-03-2005 12:18 PM

Mark: we once used OC-30 oil. I believe the GST is what we have sold the last 8-10 years after OC-30 was de listed. The oil is so clear that you can peer down into a 55 gallon drum and see writing on the drum bottom. One intermittent overhaul shop buys oil
from us and was VERY unhappy with the oil. His concern is that it took too long to run in intermittents with our oil. He went back to Simplex oil, with my blessings.

Also we package oil in bottles that look a lot like those Chlorox uses. The metal cans are expensive, damage easily, and don't pour well. They are, however, less likely to cause trouble in a fire, if that is a concern.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 09-03-2005 12:44 PM

quote: Louis Bornwasser
One intermittent overhaul shop buys oil
from us and was VERY unhappy with the oil. His concern is that it took too long to run in intermittents with our oil.

That fact tells me that GST is far superior!! So far around here the GST oil looks to be far better than Capella(and alot less expensive) but not as good as LaVezzi oil. I don't think I will be seeing clogged oil spirals running with GST oil that I usually see from 15 to 20 year old X-L's that have run for years with Capella.

Well, you generally don't run in the parts with JUST oil**IF** anything really needs running in at all. Generally one adds a tiny bit of running on compound to the oil, then the parts should be ultrasonically cleaned to get all the grit out afterwords. Today the majority of parts are sent out so accurately machined that there isn't much running in to do..... The use of go-no go hole gauges on the bushings tells the story there and selection of the correct hole gauges allows clearance for the normal oil film to be there right from the beginning. I don't believe in running in things to **Achieve** the correct clearances as it imposes to much wear on the brand new parts. I would consider the running in of a rebuilt movement today more of a just bench test to check for any heating up, and then we usually screen test them too. With LaVezzi oil it would take months to run in a movement but the parts that come out of LaVezzi today are far more accurate than they were 20 years ago... they don't require run in ... just a test run....

Mark

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Louis Bornwasser
Film God

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

posted 09-03-2005 09:21 PM

I agree that the LaVezzi parts now are just about perfect; not always matched in the kits, but close enough.

My problems revolve around out-of-square cases on XL & Century; many from long ago. Cost conscious exhibitors don't care how much touch up is necessary to bring these dead on. We do it anyway. (In my life I never saw a JJ case that was square until we started going the extra mile.......28 thou off one side of one.) Louis

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