Specific Advice Needed about TV Wall Mount

loropy9 on 26/01/2023 - 12:06

I'm looking to buy a wall mount for my 75 inch tv. Something like Selby https://www.selby.com.au/bracket-finder/42-70in-plasma-tilt-…

The width of the back plate is 918mm and the studs in my wall are 460mm (920mm across 3 studs). On the face of it, the bracket should be able to reach across 3 studs. However looking at the photos it seems that the 918mm spans edge to edge, not hole to hole. Which may result the 3rd hole on the bracket to fall 10-20mm short from the stud.
Due to the studs location, I need to bolt the back plate on 3 studs. Any two studs are either too far to the left or to the right from the centre of the desired tv location.

Many brackets out there with a ~920mm back plate, but the photos on all look the same.

Any installers out there who could possibly clarify if the 918mm back plate measure refers to the holes or the entire plate?

I was going to call Selby to enquire, but they are closed on Australia Day.

Yes I googled and youtubed it, but I couldn't find anything this detailed.

General Discussion

Comments

  • randomusername2017 on 26/01/2023 - 12:30

    Manual

    • toomuchdogfur on 26/01/2023 - 13:09
      +1

      Did you even read the manual to see if it answered the question?

      • randomusername2017 on 26/01/2023 - 13:23

        Yes
        Image on page 3

        • toomuchdogfur on 26/01/2023 - 13:32

          Respectfully, it doesn't answer the question - it shows that you definitely can put the bracket across two studs, but doesn't show any measurements or hints whether it can be put across three.

          Plus they have clearly used a generic image rather than one of the actual bracket… if those two studs are 40.6cm apart as written in the picture, then proprotionally that bracket in the picture is about 60cm wide, not even close to the actual dimensions of 90cm. So we can't even use the image to guess whether three studs are possible, since none of the dimensions in the picture make sense to begin with!

          • randomusername2017 on 26/01/2023 - 13:40

            @toomuchdogfur: Entire bracket is 918mm
            Horizontal mounts to 875mm
            Not that hard to work out in conjunction with the diagram.

    • loropy9 on 26/01/2023 - 13:33

      I did see the manual, but unfortunately it doesn't specify the exact distance between the end holes. Thanks for the link though :)

  • Nugs on 26/01/2023 - 12:54

    "Any two studs are either too far to the left or to the right from the centre of the desired tv location."
    20/30mm either way is not ok?
    .

    • loropy9 on 26/01/2023 - 13:36

      This means that the tv will hang mostly on the side of the bracket that isn't quite reaching the 3rd stud.

  • bobbified on 26/01/2023 - 13:08
    +1

    Due to the studs location, I need to bolt the back plate on 3 studs.

    I'm not sure whether I'm misunderstanding what you've written, but what's wrong with bolting the backplate to 3 studs?

    Even one long screw into a stud (around the middle of the bracket) with a couple of spring toggles/anchors either side would be sufficient.

    • toomuchdogfur on 26/01/2023 - 13:17
      +3

      I'm not sure whether I'm misunderstanding what you've written, but what's wrong with bolting the backplate to 3 studs?

      They're uncertain whether the bracket they are looking at will actually span three studs, as the bracket is the exact width of 3 studs edge to edge, but the holes themselves fall short of the edge (and therefore the edge screws may barely miss the edge studs).

      Even one long screw into a stud (around the middle of the bracket) with a couple of spring toggles/anchors either side would be sufficient.

      This is likely to be fine actually… with the right bolts, you can get pretty absurd weight ratings even out of one stud. Since the TV will be centered on the stud, it is unlikely to strain the toggles/anchors on the edge of the bracket.

      But if you just want to not have any doubts, get an extra-wide wall mount that can comfortably span all studs (see my comment further down).

      • bobbified on 26/01/2023 - 13:25
        +1

        they're uncertain whether the bracket they are looking at will actually span three studs

        Ah, that makes sense. Two studs will actually be more than sufficient. They don't have to be exactly in the middle. A toggle can be used where there is no stud.

        This is likely to be fine actually… with the right bolts, you can get pretty absurd weight ratings even out of one stud.

        Yeh, a stud can hold quite a bit of weight if you use a screw with the right size thread. If you combine it with the toggles along the top of the bracket it will be able to withstand the weight of the TV being 'pivoted' by the bottom edge of the bracket.

  • toomuchdogfur on 26/01/2023 - 13:14
    +1

    I don't have any advice on this specific wall mount, but I can say that when faced with the same issue (three studs, one dead on exact centre of the TV) I sidestepped the issue by buying an extra wide mount - 1 metre long so it comfortably went over three studs.

    The one I have used to be sold on Amazon for just $56 but unfortunately is no longer stocked.

    I notice Jaycar has one though that is 1.042m long, that should also be fine to span three studs. It doesn't appear to be tilt adjustable though, but you might be able to find another extra long bracket that is with some more searching.

  • SBOB on 26/01/2023 - 13:18
    +4

    If you hit one stud in the middle and use some decent weight rated wall anchors for either ends, the thing won't be coming off the wall.

    • lachhelix on 26/01/2023 - 14:32
      +1

      This ^
      I've hung up a good 10-15 TVs (including a very heavy 63" plasma) and never ever had a problem with 1 stud and a couple of good wall anchors

      • spaiydz on 29/01/2023 - 20:33

        Would you be able to recommend a wall anchor for plaster?

  • timthetoolman on 26/01/2023 - 13:33
    +3

    Failing this, you can screw some timber to the wall and then mount your TV to that, ensuring you hit all 3 studs

  • kohno83 on 26/01/2023 - 13:37
    +2

    Option 1: You can already pickup 1 wall stud. As suggested here, just use decent wall anchors on either side of that… the further apart, the better it is..

    If you can pick up 2 wall-studs, that is MORE than plenty…

    Or if it makes you sleep better, pick up 2 wall studs and add a set of wall anchors in between.

    Option 2: Screw timber covering the 3 wall studs directly onto the wall. Then mount your TV bracket anywhere on the timber and with however many screws you may want.

  • brad1-8tsi on 26/01/2023 - 17:12
    +1

    One of my recent casual jobs was installing Interactive Panels in schools. The big ones weigh 100kg, most of them are ~70kg.

    We'd generally just locate off 2 studs (4x6mm screws). If we couldn't get the positioning right or felt the mount material wasn't strong enough we'd attach a sheet of 13mm MDF behind the panel and attach the TV mount to the panel. 8 screws were enough to hold 75kg bouncing without sign of failure.

  • loropy9 on 26/01/2023 - 22:44

    Thank you everyone for your comments. Much appreciated.

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