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This topic comprises 5 pages: 1 2 3 4 5
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Author
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Topic: Curtains do you use them?
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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
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posted 10-13-2009 06:43 AM
quote: Jack Ondracek That all stopped around 12 years ago, when the cables slipped off of a pulley and jammed. The owner was 10 miles away at his drive-in. They did get the curtains opened manually, but that one occasion was enough that he didn't fix the problem and never used the curtains again.
And there it is...cables don't just "slip off the pulley" cables are not maintained. Cables stretch with all of the weight/friction they have to overcome.
Have you all ever noticed that even on maskings...the stops seem to drift or the image seems to no longer be centered? It isn't a mystery. Cables stretch, pulleys get tugged out of position or also wear out. Anything that is mechanical and moves is also aging.
All motorized drapery should be checked regularly. Slack needs to constantly be taken out of the cables (ideally checked once per month)...check pulleys and such once a year. Lubricate the carriers and pulleys once per year (you'd be amazed how much quieter they run...none of that "clack, rrrrrr, clack, rrrrr, clack....etc" as they open/close.
Also, pay attention to the grand drape...it is GOING TO STRETCH and possibly hit the ground (Depending theatre design). The grand drape can NEVER drag on the ground. That puts unbelievable stress on the system. Not only are you pulling the weight of the curtain but now you are pulling the friction of the curtain...it can more than double the load of the system. The curtains stretching is also an indicator that the grommets at the top are likely also starting to pull loose from the fabric...they should be checked over.
Again, put in good stuff (good fabric, good motor, good rigging) and keep it up, just a little bit, and it isn't going to be a problem. If you "set it and forget it" you have a disaster coming your way, and it will be your fault.
Steve
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This topic comprises 5 pages: 1 2 3 4 5
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