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Anonymous Poster

LCD TV Wall Mount

03/16/2010 4:16 PM

I've tried to get a question answered from the supplier of a flat TV wall mount for almost three months without success. The problem(?) is that I believe that the mounting instruction (pdf found here: http://www.vogels.com/web/Consumer/Products/Products/-EFW8245-WALL-MOUNT-MOTION-MC.htm) is not correct. I worry about warranty aspects since they require that the mounting is done according to their instruction... Here's my question:

To: info@vogels.com Sent: Sunday, December 27, 2009 10:48 PM Subject: Wrong
Dear Vogels. Today I purchased your 8245 Motion+. In the description under point 4 "mounting in wood" there must be a mistake in the description (please inform me if I'm wrong). The mistake is that you show that screws to the right must go into wood and that it's wrong if you use the left pair into wood (assuming that only one pair could go into pure wood). The right advice must be the opposite around. Here's my thinking: Two extreme situations: 1) TV parallel to the wall. The centre of mass is to the left of the left pair of screws. Assume upper left screw into wood and upper right plug in gypsum. The "rotating moment" for the gypsum screw is 200mm times the mass. Assume upper right screw into wood and upper left plug in gypsum. The "rotating moment" for the gypsum screw is 345mm times the mass. The rotating moment on the gypsum screw is the least when the left screw is in solid wood. 2) TV perpendicular to the wall. The centre of mass is in line with the left pair of screws = they should be mounted in the solid material. What do you say?

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Guru
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#1

Re: LCD TV Wall Mount

03/16/2010 5:14 PM

I presume you are talking about mounting this flat screen TV to a standard wall, which is to say drywall over 2x4 studs. Having studied the mounting instructions, I absolutely agree with you that the wall mounting method looks woefully inadequate. May I offer an alternative?

Determine the stud spacing of the wall where you wish to install the television, and the vertical spacing of the mounting screws. Add two inches to each measurement, and then go buy a nice piece of clear-grained hardwood. I suggest oak or maple. Finish this piece of wood according to taste, and then pre-drill holes to fasten it to the wall studs and to attach the mount to it. This will give vastly better support than attaching to a single stud on one edge. But make certain to pre-drill your screw holes, and you might want to put a bit of beeswax on the screws before you try to drive them in, or you will strip them out or break them off.

Alternatively, you could use steel channel stock to bridge the wall studs and bolts to attach the mounting to the channel stock, though it wouldn't be quite as attractive.

Either way, this will be functionally equivalent to mounting to a solid wall, and should more than satisfy the manufacturers' warranty requirements.

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DrMoose
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#2
In reply to #1

Re: LCD TV Wall Mount

03/16/2010 5:57 PM

Zipits are drywall screws that take screws.

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#5
In reply to #1

Re: LCD TV Wall Mount

03/18/2010 1:13 AM

I find these "blind (T) nuts" are advantageous in fastening to wood applications.

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Guru
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#6
In reply to #5

Re: LCD TV Wall Mount

03/18/2010 1:56 AM

These are indeed very good, but are usually best installed from the backside. They have a nasty habit of pulling out when installed in blind holes.

On the other hand, when using a hard, strong wood such as oak or maple for the bridge, pre-drilled holes and heavy wood screws are more than adequate. Just make certain to use at least 3.5 inch screws for attaching the bridge to the wall studs

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#7
In reply to #6

Re: LCD TV Wall Mount

03/18/2010 2:04 AM

but are usually best installed from the backside.

I never read the directions and I thought from the backside was the correct way they've never disappointed me though

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Anonymous Poster
#3

Re: LCD TV Wall Mount

03/17/2010 6:43 AM

Bad instructions. All bolts should go into studs or a mounting board re DrMoose. That's the way I mount garage door openers. Versatile, clean and very strong.

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#4
In reply to #3

Re: LCD TV Wall Mount

03/17/2010 10:26 AM

I agree the mounting details given in Manual are wrong. please do not expect correction from manufacturers. They never OWN their mistakes.

If I were you, I will forget about them. Nib of the matter is that, You corrected yourself before any problem came. Good Work.

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