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The following page was printed from RemoteCentral.com:
Topic: | Projector shaking This thread has 12 replies. Displaying all posts. |
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Post 1 made on Wednesday October 7, 2015 at 19:07 |
ggarza270 Long Time Member |
Joined: Posts: | November 2010 158 |
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Hi I have a job where the projector keeps shaking. The projector was already there and was hung on a mount that they had. The mount that was there was real flimsy and had a real skinny pole so we swapped the mount out for a sturdier chief mount. The mount is installed straight to the steel rafters, it's a commercial building. We installed a rubber pad between the rafter and the mount as kind of a buffer.
So before the projector would shake when the door was opened or closed but now the projector shakes all the time. It doesn't get worst when the doors open or close but it has a slight vibration to it.
Has anybody had any experience with this. They want me to fix it before the 13th cause they are having a party and wanted to show holloween movies on it.
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Post 2 made on Wednesday October 7, 2015 at 19:21 |
Trunk-Slammer -Supreme Loyal Member |
Joined: Posts: | November 2003 7,459 |
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DLP projector with an out of balance light wheel?
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Post 3 made on Wednesday October 7, 2015 at 19:25 |
Lowhz Senior Member |
Joined: Posts: | April 2012 1,168 |
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That's vibration from the HVAC, people walking on other floors and traffic outside.
Chief makes a vibration isolation coupler called a CMA347 that adds some inertia and decouples the vibration from the ceiling.
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OP | Post 4 made on Wednesday October 7, 2015 at 19:35 |
ggarza270 Long Time Member |
Joined: Posts: | November 2010 158 |
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On October 7, 2015 at 19:25, Lowhz said...
That's vibration from the HVAC, people walking on other floors and traffic outside.
Chief makes a vibration isolation coupler called a CMA347 that adds some inertia and decouples the vibration from the ceiling. Thanks I'll take a look at this. The old mount used to vibrate worse when the Ac was on as well.
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Post 5 made on Wednesday October 7, 2015 at 19:44 |
Brad Humphrey Super Member |
Joined: Posts: | February 2004 2,594 |
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I have had to deal with this before. 1st thing to know, is let them know, that it is a structural issue and you may or may not be able to fix the shaking to an acceptable level.
The whole reason for the shaking is because the beam itself is vibrating (otherwise it wouldn't do it). 1st thing to do is remove the rubber pad - the way you describe you have it mounted, is making the situation worse. It needs to be bolted solid against that beam. 2nd, get another arm to attach from another (not the same) beam, a little further down the pole. This will help stabilize the assembly. You can use a stabilizer arm from a DirecTV sat dish for this, if you like and if it will reach. Also, you can wrap your rubber pad around the pole, where this 2nd arm attaches. Here in this location, it will actually help in mitigating vibration. Just make sure where the 2nd arm is attached to at its base, is solid and 'no' rubber pad there.
[edit] Lowhz posted while I was typing. That Chief piece looks nice, wish they would have had that around 10 years ago when I dealt with that Infocus projector.
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Post 6 made on Wednesday October 7, 2015 at 20:38 |
Dave in Balto Super Member |
Joined: Posts: | January 2008 2,771 |
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+1 for the chief. I want to say, all in all the mount is about $900 retail, but I did 2 of them in an office and they worked.
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Hey, careful man, there's a beverage here!
The Dude |
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Post 7 made on Wednesday October 7, 2015 at 20:56 |
FP Crazy Super Member |
Joined: Posts: | June 2003 2,940 |
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The only problem with any type of decoupled is it doesn't solveany sympathetic vibrations from powerful subwoofers. If your subwoofer isn't creating any of the vibration, then that is not an issue
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Chasing Ernie's post count, one useless post at a time. |
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Post 8 made on Wednesday October 7, 2015 at 21:17 |
Audiophiliac Super Member |
Joined: Posts: | August 2006 3,311 |
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Fly it.
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"When I eat, it is the food that is scared." - Ron Swanson |
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Post 9 made on Thursday October 8, 2015 at 01:52 |
simoneales Select Member |
Joined: Posts: | May 2005 1,782 |
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On October 7, 2015 at 19:25, Lowhz said...
That's vibration from the HVAC, people walking on other floors and traffic outside.
Chief makes a vibration isolation coupler called a CMA347 that adds some inertia and decouples the vibration from the ceiling. +1 However it does not look like it's a complete fix, but a significant reduction in visible movement. " frameborder="0" allowfullscreen>
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I guarantee I'll tell you the truth and I guarantee I'll tell you what you need to know but I can't guarantee that I'll be telling you anything you want to hear. |
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Post 10 made on Thursday October 8, 2015 at 08:02 |
chicagoinstaller Advanced Member |
Joined: Posts: | September 2004 993 |
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projector mount isolator We used this type when the HVAC unit vibrates the mount at a bar. the ESPN ticker made you feel dizzy and this made it far far far less noticeable Around $300 retail depending on weight of projector, but saves us on an install or two.
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If you can't be good, be good at it. |
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OP | Post 11 made on Thursday October 8, 2015 at 09:11 |
ggarza270 Long Time Member |
Joined: Posts: | November 2010 158 |
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Thanks guys I'll take a look at these. I will try Brads suggestions first cause I could do that and see if it makes a difference. But I see what I will need to get if doesn't.
Thanks
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Post 12 made on Thursday October 8, 2015 at 09:12 |
Fred Harding Super Member |
Joined: Posts: | October 2001 3,459 |
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Peerless and Chief both offer decoupling options.
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On the West Coast of Wisconsin |
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Post 13 made on Thursday October 8, 2015 at 10:04 |
Brad Humphrey Super Member |
Joined: Posts: | February 2004 2,594 |
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I would go with the prefab components. Although my method worked for my situation, it was a PIA and took a lot of adjustment (and time). It would be like the duct tape approach, compared to what is available now from Chief and others. Yes they are pricy but how much is your time worth. If these products were available at the time I had to deal with this, I would have certainly gone that route.
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