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Author
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Topic: Eumig S710-D running slowly
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Christian Bjorgen
Jedi Master Film Handler
Posts: 996
From: Kvinnherad, Norway
Registered: Oct 2009
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posted December 13, 2009 07:42 AM
I've bought a new projector now, an Elmo, to use as a main projector, but I still want to have this one running smoothly for my regular 8 needs, so I'm not giving in just yet.
And yes, I know theres already an old thread for this subject, but it's 3 pages of stuff now, so I thought I would rather create a new one and sum up the problem and what that has been done so far.
The problem:
My EUMIG S-710D runs too slowly. It is not noticeable on the picture, but is very audible. It can be seen here:
http://www.youtube.com/watch?v=3j8ZXBPadYo
Most comments I've gotten, plus my own evaluation of the speed, puts it at about 3-4 fps too slow.
Possible causes and what I've done:
* The drive discs are worn and needs to be sanded or/and cleaned. The drive/motor ball also needs sanding/cleaning.
I've done this and it improved the speed slightly, but it's still alot too slow.
* The entire projector is stiffened in the grease and needs to be re-lubricated.
Done, had no effect on the speed, but made it run smoother.
* Pivot bushes are stiff/broken.
I did all tests suggested to me on the pivot bushes and also lubricated them. Had no effect on the speed.
* The speed control assembly need re-adjustment.
The only thing I've not tried yet, and the reason that I still need some more help. Martin has been so nice as to repeat his post on how to do this at least 10 times, but I'm still abit shy on the technical English. ![[Smile]](smile.gif)
Here's the post in question:
"The speed range of the Eumig 8xx is set by a large, shiny-metal screw just above the shaft that carries the two rubber-faced drive disks. This runs through a slot in black metal plate through which the 50/60 Hz switch passes. It clamps a shiny-metal bar through another slot. The further down this bar is, the faster the projector will run. Usual top speed is in the range 27.5 to 28 fps. "
So I've edited my picture of the projector to see if I'm on the right track.
http://bjoergen.org/vault/Projectoredited.jpg
Please have a look at the following picture and tell me if I'm wrong.
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Also, I had a thought as to WHY it runs too slow. It's a dual projector, both Super and Standard 8mm. Now, Standard 8 frames are alot smaller than Super 8 frames, meaning that it takes less speed to make R8 run at 24fps than it does with S8. Could it be that the previous owner adjusted the speed to run R8 smoothly at 24 fps, and therefore, slowing down the Super 8 setting?
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Well who’s on first? Yeah. Go ahead and tell me. Who. The guy on first. Who. The guy playin’ first base. Who. The guy on first. Who is on first! What are you askin’ me for? I’m askin’ you!
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