8mm Forum: Elmo SC-18 belt problem

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Topic: Elmo SC-18 belt problem

Vidar Olavesen
Film God

Posts: 2232
From: Sarpsborg, Norway
Registered: Nov 2012

posted May 22, 2015 10:16 AM

I put new belts in this projector a short time ago.Almost daily the belt falls off. Mostly when going backwards or rewinding. If I clean the belt, it usually runs the rest of the day. Next day the belt feels slightly oily again. Any tips on how to make it stay on? Any adjustments? Thanks

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Jean-Marc Toussaint
Film God

Posts: 2392
From: France
Registered: Oct 2004

posted May 22, 2015 12:55 PM

It's a known issue on the SC18. Granted, it can be annoying. Generally it's because the belt is a notch too loose and if you switch too briskly from forward to rewind it will jump off the pulley.
I've tried adding a small tension roller on a previous machine, it worked ok but wasn't 100% fail-proof.
On another one, I made my own belt (belt material + soldering iron) with a slightly (and I mean slightly) smaller diameter. That solution was a bit better.

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The Grindcave Cinema Website

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Niels Peter Buch
Film Handler

Posts: 76
From: Hvidovre, Copenhagen, Denmark
Registered: Jun 2013

posted May 22, 2015 03:23 PM

Hello Vidar.
I havent got any expirience with your Elmo !
Maybe a general overhaul -oiling/greasing of the projector, could make less "resistance" on the pulley.

Kind regards

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Niels Peter Buch

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Vidar Olavesen
Film God

Posts: 2232
From: Sarpsborg, Norway
Registered: Nov 2012

posted May 22, 2015 07:25 PM

Thanks, but it runs quite fine and think it's just been oiled. The idea of slightly more tension is one I could look into. Might be the belt I got for it, isn't correct either. Got another belt from same supplier for the GS-1200 and it was all wrong. Some plastic belt instead of a rubber one, too stiff and not possible to get on unless the motor of the GS was loosened.

Will check out another belt too.

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