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post #1 of 25 Unread 07-16-2015, 01:13 AM - Thread Starter
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Question Hang projector from stairs. Issues?

I moved into a new home and the way the living room lays out, the perfect place for our projector is to have it hang from the stairs. Are there reasons to not install on the bottom side of the stairs? Obviously, vibrations could be bad for the bulb when warmed up and if someone was to walk on the stairs while watching a movie the vibrations would visibly shake the image. I was thinking of mounting a ceiling projector mount to a board and then somehow discretely attaching that board to the stairs. The only other real option is to have a giant multi-jointed arm swing out to put the projector into place and have it disappear when not in use.

Any thoughts on this little puzzle?
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post #2 of 25 Unread 07-16-2015, 05:47 AM
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I suppose u could, but not sure that I would. Stairs can take alot of abuse. Kids like to jump on em on the way down. Id be worried about the pj. Can u wall mount it under the stairs?
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post #3 of 25 Unread 07-16-2015, 05:56 AM
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since it is a steel stair, I can't imaging it would be much worse than a ceiling mounted projector in the basement, You walk directly overhead and it is going to bounce. If you don't have a family running up and down it should work.
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post #4 of 25 Unread 07-16-2015, 06:25 AM
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I would suggest finding some sort of way to decouple the projector mount from the stair platform. Some kind of rubber isolator maybe? The issue is if its connected directly to one of the stairs, all of the energy pushing down on that stair when someone steps on it goes right to the projector, vs something like Big said where you mount a projector on a ceiling in the basement, where the force gets dispersed across the floor board, carpet or hardwood, and the floor joists before reaching the projector mount.
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post #5 of 25 Unread 07-16-2015, 06:45 AM
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Quote:
Originally Posted by KanosWRX View Post
I would suggest finding some sort of way to decouple the projector mount from the stair platform. Some kind of rubber isolator maybe? The issue is if its connected directly to one of the stairs, all of the energy pushing down on that stair when someone steps on it goes right to the projector, vs something like Big said where you mount a projector on a ceiling in the basement, where the force gets dispersed across the floor board, carpet or hardwood, and the floor joists before reaching the projector mount.
That's kind of what I was thinking. I wonder if bolting the mount through a layer of dynamat would work well. Seems that a material like that would be stiff enough to mount something against, while absorbing enough vibration. Not sure, though. Great question! I'd say go for it, and see how it works and let us know the outcome!
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post #6 of 25 Unread 07-16-2015, 08:28 AM
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If you do mount, I would suggest using a rubber grommet in between each connection point. You essentially want to mimic the model of a "motor mount", that will absorb any small vibrations. Since your staircase is a steel frame with wood steps, I'm assuming the only vibration you will achieve will be the initial "shock" of each foot hitting a step and if the shock is severe (jumping, running, etc.), some minor vibration in the steel.


You can do it, I would just be wise on your mounting technique.

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post #7 of 25 Unread 07-16-2015, 08:34 AM
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post #8 of 25 Unread 07-16-2015, 08:42 AM
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Bingo. I bet that'd do the trick. Cheap enough too!
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post #9 of 25 Unread 07-16-2015, 12:37 PM
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Consider that the wood stair tread probably adds flex to the stair assembly when it is walked on. It probably sags down in the center to a certain extent when it is stepped on. I would consider suspending a metal tube, such as a 2" square steel tube under the stair tread, attached only at the ends, and mounting the projector from it. The front part of the step with the steel support under it probably moves less than the back edge. You might want to experiment with someone walking on the stairs to see where it moves the most. You could temporarily attach a laser pointer to different locations and see how much the projected red spot moves.
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post #10 of 25 Unread 07-16-2015, 01:25 PM
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I would mount an isolated metal plate to the frame, not the wooden tread.

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post #11 of 25 Unread 07-16-2015, 01:27 PM
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But remember, you're also going to need power and HDMI routed under the stairs.
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post #12 of 25 Unread 07-16-2015, 01:33 PM
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Why not frame underneath strairs essentially creating a hush box? Wouldn't have to necessarily attach to stairs.......
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post #13 of 25 Unread 07-16-2015, 01:41 PM - Thread Starter
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Smile

Thanks everybody for the great advice. Now I'm thinking that I mount a board to the metal frame of the underside of the steps. There are screws that are screwed from the metal into the board. I could remove those screws, add a wooden board, replace old screws with longer screws and then add a anti-vibration device as suggested to the wooden board.

I thought a peerless anti-vibration plate (can't post a link yet) might work but maybe the isolateit isolators would work better. I'm just not sure how I use them.

Thanks again!!
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post #14 of 25 Unread 07-16-2015, 01:42 PM - Thread Starter
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post #15 of 25 Unread 07-16-2015, 01:44 PM - Thread Starter
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Quote:
Originally Posted by Clarence View Post
I would mount an isolated metal plate to the frame, not the wooden tread.

Is there a reason to go with metal rather than wood for the mounting plate?
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post #16 of 25 Unread 07-16-2015, 04:17 PM
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Quote:
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Is there a reason to go with metal rather than wood for the mounting plate?
Wood would work. And it would be easier to mount the mount to.
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post #17 of 25 Unread 07-17-2015, 03:49 PM
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Is any of space under the stairs actually used? If not, why not forego the whole 'stairs vibration' issue altogether, and just put the projector on a nice decorative pedestal? You could even run all the wires invisibly by running them up inside the pedestal.



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Last edited by domz777; 07-17-2015 at 03:58 PM.
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post #18 of 25 Unread 07-17-2015, 05:46 PM
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Quote:
Originally Posted by domz777 View Post
Is any of space under the stairs actually used? If not, why not forego the whole 'stairs vibration' issue altogether, and just put the projector on a nice decorative pedestal? You could even run all the wires invisibly by running them up inside the pedestal.



Not sure about the Linda Blair method. How about a thermoplastic rubber spacer between your understair and projector mount?
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post #19 of 25 Unread 07-17-2015, 10:22 PM
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Not sure about the Linda Blair method.
I too felt the knee-jerk reaction to dismiss the pedestal idea out of hand, but if you stop and think about it for a second, it really is a much better idea than it initially seems to be.

I just thought it should be mentioned to give spunaround another option to consider, that's all.
It can't hurt to explore other options before making a decision, right?

Last edited by domz777; Yesterday at 12:03 AM.
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post #20 of 25 Unread Yesterday, 03:07 AM
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Originally Posted by domz777 View Post
I too felt the knee-jerk reaction to dismiss the pedestal idea out of hand, but if you stop and think about it for a second, it really is a much better idea than it initially seems to be.

I just thought it should be mentioned to give spunaround another option to consider, that's all.
It can't hurt to explore other options before making a decision, right?
I think it is a much better solution. Based on his projector model needing to be inverted, a pedestal as pictured may not work well. If not a pedestal, a cabinet or bookcase for media storage.



with the projector on top mounted beneath something like this:




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post #21 of 25 Unread Yesterday, 03:58 AM
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Ooh, top of a bookcase, I like that. I don't remember it ever being stated that his pj HAD to be mounted upside down tho. It was going to be because he was gunna attach it to the underside of a stair tread.

If it doesn't HAVE to be inverted, than the top of a bookcase(or pedestal) would be just fine.

Even if it does need to be inverted, why put that footstool looking thing on top of the bookcase to mount the pj under it? Just clear out the top compartment, and mount the pj to the underside of the top of the bookcase. You could easily remove the back, or cut a hole in the back, if there was a heat issue. Hiding wires would be a breeze as well. A pedestal looks more austere than a bookcase, I think, but a bookcase definitely has the benefit of additional storage space, plus it would definitely look a lot less 'out of place' under a staircase.

Regardless, both bookcases and pedestals come in an infinite variety of shapes and styles, so if spunaround likes this type of idea, he can easily get something that will match his existing decor. If he doesn't like this style of idea, well, nothing else matters after that LOL, cuz the bottom line here is, his is the only opinion that counts.
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post #22 of 25 Unread Yesterday, 11:20 AM - Thread Starter
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Originally Posted by domz777 View Post
Ooh, top of a bookcase, I like that. I don't remember it ever being stated that his pj HAD to be mounted upside down tho. It was going to be because he was gunna attach it to the underside of a stair tread.

If it doesn't HAVE to be inverted, than the top of a bookcase(or pedestal) would be just fine.

Even if it does need to be inverted, why put that footstool looking thing on top of the bookcase to mount the pj under it? Just clear out the top compartment, and mount the pj to the underside of the top of the bookcase. You could easily remove the back, or cut a hole in the back, if there was a heat issue. Hiding wires would be a breeze as well. A pedestal looks more austere than a bookcase, I think, but a bookcase definitely has the benefit of additional storage space, plus it would definitely look a lot less 'out of place' under a staircase.

Regardless, both bookcases and pedestals come in an infinite variety of shapes and styles, so if spunaround likes this type of idea, he can easily get something that will match his existing decor. If he doesn't like this style of idea, well, nothing else matters after that LOL, cuz the bottom line here is, his is the only opinion that counts.
Hey domz777!

Thanks for the suggestions. The problem here is that there is a large window behind the stairs so a bookcase will not work. It would block the large window. I will be mounting the projector so that the lens is flush or slightly behind the frame of the stairs so it doesn't seem too out of place.
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post #23 of 25 Unread Yesterday, 04:59 PM
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Ahh. Ok then. No Problem, Chief. 100% understood. Righto!

*shoves Dreamer in the shoulder ala Ralph Kramden and Ed Nortorn, and whispers harshly*

"SEE! I TOLD you it was a dumb idea!"
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post #24 of 25 Unread Today, 12:32 AM
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Originally Posted by domz777 View Post
Ahh. Ok then. No Problem, Chief. 100% understood. Righto!

*shoves Dreamer in the shoulder ala Ralph Kramden and Ed Nortorn, and whispers harshly*

"SEE! I TOLD you it was a dumb idea!"
Naw ... he didn't tell us where along the length of the staircase it needed to go. Coulda been to the left of the window and a perfect solution. Just our bad luck it needs to go right in front !

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post #25 of 25 Unread Today, 12:49 AM
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Yeah! Good point!

Our idea was better. It was his stupid noob window that ruined it for us.

Stupid window

*pouts*

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just kiddin with ya spun, it's all good.
not really calling you OR your window a noob
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