8mm Forum: Eumig 802 Projector Issue

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Posted by Douglas W. Warren (Member # 2159) on September 23, 2010, 02:46 PM:

I received a Eumig 802 Projector through eBay recently. The problem I'm having is that the machine runs at 18 fps, but when switched to 24 fps the spindles don't turn. Any thoughts on what the issue might be?

Cheers,
Douglas [Frown]

Posted by Steve Klare (Member # 12) on September 23, 2010, 02:57 PM:

I guess you can hear the motor running but nothing else is happening?

The 800 series use this interesting method of changing projection speed which is a sliding ball on the motor shaft touching the flat side of a disk. As the ball slides towards the center of the disk the number of motor turns to “walk” around that circle get fewer and fewer, so the speed goes up.

In the world of automobiles this is called a Continuously Variable Transmission.

My guess is the rubber facing on your disk is worn out at the radius for 24 FPS and you are losing traction.

As you slide the speed control just a little slower, does it work again?

Posted by Douglas W. Warren (Member # 2159) on September 23, 2010, 03:20 PM:

Hi Steve,
The motor and lamp appear to be working fine and I test ran an old film through it at 18 fps. But when you set the speed at 24 fps,it stops cold with any weight on the spindles. I'll check what you've suggested and see if I can do anything. Any clue who sells Eumig parts these days? Many thanks for your help.

Cheers,
Douglas [Smile]

Posted by Steve Klare (Member # 12) on September 23, 2010, 03:43 PM:

From what I've heard, this is major surgery if you even can get the parts.

I'm in luck so far because my machine has never had the problem.

Here's some ideas:

Sand It

Clean It and Sand It

If you search there are many more.

If you take the speaker side cover off the machine, you can see this transmission back towards the rear spindle (near the adjustment slider). It's wonderfully simple, but unfortunately it has this weakness with age.

Just take care: when you do this you expose line voltage if you plug it in!

Posted by Josef Grassmann (Member # 378) on September 25, 2010, 07:51 AM:

First try to clean rubber coated disks with spirit (96% to 99% alcohol) and wipe dry. Don`t use other solvents.
We grind rubber disks outside projector, otherwise you will have rubber dust and abrasive particels inside projector causing further problems in near future.

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