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Topic: Black "film" in gear box of Simplex 35 mystery.

Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 03-24-2005 07:38 PM

quote: Monte L Fullmer
I basically did the same thing, yet used carburetor cleaner spray.

Yes! We use alot of carb cleaner in the shop and you have to watch what kind you buy. John is definately correct in what he says and that gray paint in some of the old Simplexs may blister or wash away. We primarily use it to remove metal blue after parts are machined but its also useful at removeing other greasy messes. Just use it with care.... it also EXTREMELY flammable! So keep it away from sparks(ignitors) and heat sources.

Mark

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Will Kutler
Phenomenal Film Handler

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

posted 03-25-2005 12:47 AM

When it comes to engine cleaners and carb cleaners, I perfer Berrymans. Their products are a little more expensive, but are enviornmentally friendly and do not put out the noxious fumes as other products. And actually, I do feel that their products do an all around better job than others on the market.

Watch out for carb cleaners...they will eat paint, gaskets, etc, etc.

Mark, you have metal blueing as part of your machining processes????? Seems like incorrect machining perimeters...maybe incorrect cutters, speeds, feeds and/or chip loads???? Take a look at the Machinery Ready Reference for info about calculating Machining Optimization, which will extend tool life, etc, etc, etc.....

Cheers

K.

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John Hawkinson
Film God

Posts: 2273
From: Cambridge, MA, USA
Registered: Feb 2002

posted 03-25-2005 01:09 AM

I believe Mark means layout fluid.

--jhawk

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Monte L Fullmer
Film God

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

posted 03-25-2005 02:44 AM

quote: Brad Allen
Not to doubt Monte, but isn't Carb Cleaner pretty harsh stuff?
Wouldn't it remove the paint in the oil bath area?

I agree with what you and Mark had mentioned on this and I was careful on the cleaning that I did. For I just lightly sprayed and sparingly in areas that looked like needed attention. The machine that I sprayed on was the later grey model 1050, not an actual XL with the white enamel machine side. And I wiped off the residue immediately after the spray, then immediately coated the sprayed area with oil.

I did this treatment after the close of the night to prevent any sort of fire hazard.

Next time, though, I've been thinking of using WD-40 for cleaning a dirty inside..probably would be better than the carb cleaner-being a mineral oil based content than the corrosive content of the carb cleaner.

thx-Monte

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Will Kutler
Phenomenal Film Handler

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

posted 03-25-2005 03:24 AM

If Mark meant layout dye, or Dykem, which is the most well known brand of layout dye, then acetone and either a cloth shop rag or paper towel is good enough for quick and complete removal.

Monte: You should examine the product warning/instruction label before using. Many cleaners will agressively attack and either damage or remove many types of protective coatings. And many manufacturers suggest that you test the product on a small test piece prior to full useage.

Carburator cleaner will agressively attack and ruin many a coated surface!

Cheers.

K

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Monte L Fullmer
Film God

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

posted 03-25-2005 05:24 AM

Thx Will, for your input on the concern that you shared for me. -Monte

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 03-25-2005 08:01 AM

quote: Will Kutler
Mark, you have metal blueing as part of your machining processes????? Seems like incorrect machining perimeters...maybe incorrect cutters, speeds, feeds and/or chip loads???? Take a look at the Machinery Ready Reference for info about calculating Machining Optimization, which will extend tool life, etc, etc, etc.....

Yes, Blue Dykum... generally I use the spray on type on certain larger parts that I machine. My eyes are NOT what they used to be and its there as more of a safety thing. Since our mill does not have either DRO or dial indicators on it the blue dykum helps at times, also with the larrge number of interruptions I get it serves as a good reminder of what I was foing before I answered that theatre in distress phone call. I am also very familiar with speed and feed calculations...... learned that stuff about 30 years ago..... I get the biggest charge out of watching other employees that don't know burn up drill bits while drilling at mach 7.

Some of those DP-70 cast iron sound heads I frequently machine for reverse scans are some of the hardest to machine material I've ever encountered... much worse than some tool steels or stainless, definately age hardened stuff!

quote: Will Kutler
If Mark meant layout dye, or Dykem, which is the most well known brand of layout dye, then acetone and either a cloth shop rag or paper towel is good enough for quick and complete removal.

Actually carb cleaner just literally sprays it away. The carb cleaner I use doesn't smell much and being somewhat environmentally concience I prefer not to waste large numbers of trees just to wipe the stuff away.

Mark

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Louis Bornwasser
Film God

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

posted 03-26-2005 09:37 AM

Greetings, Brad!

Two possibilities: 1. The oil washing grease out of the bearings. 2. I had Simplex oil tested about 20 years ago and found some concentration of varnish or tar. I only use 10 weight non detergent oil. In the years I have used 10# I have never seen this problem; Pictures don't lie, though, and, judging from the difficulty we have removing gears from shafts in rebuilds, I think it (the problem) has been around a long time.

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Brad Allen
Jedi Master Film Handler

Posts: 688
From: Evansville, IN, USA
Registered: May 2000

posted 04-02-2005 02:37 PM

Hi Louis!
Glad to see your still a' kickin. [beer]

Actually, these projectors used the oil you sell for the past 10 years. After 3 oil changes, The black has almost completely disappeared.

If the grease is being washed out of the bearings, should the bearings be replaced?

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 04-02-2005 03:44 PM

Brad, No, the oil is actually better for the bearings than the tad bit if grease that put in them at the factory. With the oil bath circulating oil(and who knows what else)through the projector constantly it actually keeps the bearings flushed with clean(?) oil. ONe of the biggest mistakes the factory does is to leave the shields in place on the bearings to keep them for getting any of that oil. Many new machines have suffered pre-mature bearing failure as a result of that. The DP-70 isa good example ofa projector assembled correctly at the factory... no shields and the oil flowing through the bearings has definately contributed to the very long life of that machine.

Mark

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