8mm Forum: Need Help With Eumig Projector

This is topic Need Help With Eumig Projector in forum 8mm Forum at 8mm Forum.

To visit this topic, use this URL:
https://8mmforum.film-tech.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=1;t=007379

Posted by Matt Villagomez (Member # 2919) on August 20, 2012, 07:55 PM:

I recently purchased a Eumig projector model S710D. I was told it was a top of the line machine and I bought it at a very reasonable price. It worked for a little while but all of a sudden it is projecting films at a slow pace. I checked and it is set for 24 fps. It is only a little bit slow but enough to notice. I'm sure there is an easy solution but I am quite new to this hobby and don't know the first thing about taking this machine apart without ruining it. Any help would be appreciated.

Posted by Akshay Nanjangud (Member # 2828) on August 20, 2012, 08:08 PM:

Search for 'Eumig 710' on the forum's search option, Matt. Lots there to think about.

Posted by Zechariah Sporre (Member # 2358) on August 20, 2012, 10:41 PM:

This is usually a pretty easy fix. Just take the back cover off (2 screws) then towards the rear of the projector you will see 2 rubber surfaced discs facing each other. These rubber discs just seem to get slippery with time and age so the drive wheel slips a little on them.
Cleaning them with rubbing alcohol seems to do the trick. I usually just take a q tip and dip it in rubbing alcohol and then hold it against the disc while it's running.
Hopefully this is helpful (I'm pretty sure the insides are close to the same as some of the 800 series, which is what I have).

Posted by Matt Villagomez (Member # 2919) on August 20, 2012, 11:57 PM:

Zechariah, I assume you mean the two discs towards the right of the machine? Those are the only ones that have rubber on them. Do I clean one of them or both?

Posted by Dino Everette (Member # 1378) on August 21, 2012, 12:50 AM:

matt you will want to do both sides. some light sandpaper can do the trick as well..

Posted by Hugh Thompson Scott (Member # 2922) on August 21, 2012, 07:02 AM:

Exactly right Dino, this can be done while the machine is running,
I have found that if the abrasive paper is fastened to a thin piece
of wood,there is less chance of a new hairstyle!

Posted by John Hermes (Member # 1367) on August 21, 2012, 09:26 PM:

I have used brake fluid on the rubber on a couple Eumigs, as it seems to revitalize the discs.

Posted by Gary Crawford (Member # 67) on August 27, 2012, 12:56 PM:

I have also gone to the car parts place and gotten a spray can of "belt dressing"....and put it on the rubber wheel. it helped for while...as did sandpaper, but finally that old Mark S standard 8 sound machine just couldn't run anymore...unless the speed change switch was NOT on 24fps...which was of course where 98% of the films I had needed to be run.

Posted by John Capazzo (Member # 157) on August 30, 2012, 10:12 PM:

The misconception with Eumig machines is when they slow down, sanding the rubber discs is the solution. It's not. You're removing the rubber each time you sand it; even with a light paper 200 grit or what have you. If it slows down again after 6 hours of use, re sanding will further remove the rubber, then the idler in between will have nothing to rub against. After 60 hours of use, you'll have hardly any rubber remaining if sanding continues. The problem are not the rubber wheels but a spring that has too much tension and that spring takes hours to get to.

Posted by Bryan Chernick (Member # 1998) on August 31, 2012, 01:31 AM:

I don't have a Eumig projector but one of my old turntables runs with a rubber wheel in contact with the metal on the inside of the record table. When it starts to slip I clean the rubber with a rubber conditioner and the metal on the table with rubbing alcohol. The rubber conditioner is the type they sell for printers and copiers. One cleaning lasts quite a while. It's a 50 year old turn table and I assume the rubber is that old as well.

Tech Spray Rubber Rejuvenator

Posted by David Kilderry (Member # 549) on August 31, 2012, 01:52 AM:

I overcame my Eumig 940 speed problems ( alcohol, and the slightest roughing of the surfaces), but alas the sound heads have worn where now it won't reproduce the balance track and it is not as clear on the main track. This is the problem that will bury these fine projectors as they age.

Anyone have any sound head replacement options for the stereo Eumigs?

Posted by Maurizio Di Cintio (Member # 144) on August 31, 2012, 09:43 AM:

If it's not too late, you should be able to have your sound head reprofiled (it's been discussed in the forum in the past).

As for sanding the rubber discs: once they've been rubbed, they shoud last at least for some years without need of further sanding. True it is you are "destroying" their surfaces but it is really superficial, I mean on the extreme outer surface and this won't affect speed. INdeed such operation only takes away the hardened outer surface of the discs (rubber tends to harden over the years); nothing more. ANd it will last as it did (and dors) on my Eumigs. If the projector slows down again after sanding the discs, then there must be another problem, possibly one of hardened old grease (lubricant): this puts much more strain on the motor and the whole mechanics and eventually mau make sanding the discs useless. In this case you have to remove the old lubricant and re-grease all the rilevant moving parts; only then you can sand the discs.

I undertstand after 4-5 sandings, the discs will be useless, but this will have granted themachine at least some more 10 years of working life. Then changing the discs altogether is certianly an option to consider.

Posted by Hugh Thompson Scott (Member # 2922) on December 20, 2012, 05:42 AM:

Hi David I did put up a couple of addresses on the forum regarding
reprofiling of soundheads for EUMIG projectors,one of the
proprietors of the company told me that soundheads can still be obtained for EUMIGS.Both firms are in the UK.

Posted by Vincent Zabbia (Member # 2453) on December 20, 2012, 10:38 AM:

John Capazzo is correct. Sanding is a quick fix and not the solution. The spring tension is the problem. It's hard to fix on the 710. Easier to fix on the 800 models, (easy access).....The ball needs more pressure to the rubber discs. A well used eumig with grooves formed in the rubber will be another major problem...

Posted by Ronald Kwiatkowski (Member # 3349) on December 20, 2012, 11:22 AM:

Something like this, Vincent?

I got an S938 on ebay, and I noticed it slowing down and rattling, once the take up reel gets fuller. There's a thread with more pictures here: . 8mm Forum

When you said "grooves", I suppose you mean the "rings" on what I called "big wheels". What can be done about that? Haven't done anything with them wheels yet... Thanks a lot...

Posted by Vincent Zabbia (Member # 2453) on December 20, 2012, 02:21 PM:

Not much can be done other than replacement. years of the metal ball riding on the same spot makes for poor contact. Wish it was as simple as replacing a belt. Keep an eye out for a broken projector at a low price. Try to find one that was owned by someone who only watched home movies on it. It's more likely that it doesn't have many miles on it....

UBB.classic^TM 6.3.1.2