Movable Ceiling-Mounted Projector?

Discussion in 'Home Theater Projects' started by DanThomas, Aug 7, 2005.

  1. DanThomas

    DanThomas Agent

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    I'm not sure if this is the correct place to post this or not, but I thought I'd try here first. Feel free to direct me elsewhere if this isn't the right place.

    I want to ceiling-mount my new InFocus 4805 projector. But I want to have it on some sort of track so I can move it closer to the screen, and further away, whenever I want to. The reason I want to do this is because I want to have a smaller picture for SD daily viewing, and a larger picture when I watch movies, so it feels "special" to watch movies.

    Here's what I have in mind:

    Since I have to manually adjust the zoom and focus on the projector, I want to have the projector be about seven feet or so above my head (I'll figure out exactly how high I can reach comfortably).

    I'm thinking I can hang the projector mount from a track of some kind. Perhaps something like the kind of track that sliding closet doors hang from. So the mount would be a platform of some kind, with, say, four arms that go up to the track and have wheels on them. I can slide the mount forward and backwards by hand.

    I may have to vary the angle of the tracks at the two different stopping points, so I don't have to mess with the angle of the projector. I'll probably have to adjust the Keystone a little, but that's no biggie.

    Anyone ever done this? Anyone have any ideas of the best way to do this? All suggestions will be appreciated!!

    -Dan
     
  2. BrianMe

    BrianMe Stunt Coordinator

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    What size picture are you going for? What are the biggest and smallest sizes? That would help.

    Also, 7 feet from the ground puts the image pretty close to the floor. Make sure you measure that off as well.
     
  3. Leo Kerr

    Leo Kerr Screenwriter

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    One of the 'secrets' that some installers I know use (in permenant, commercial settings,) is to use a unistrut 'grid.'

    Two mount cross-path, and allow the projector to be slid side to side for proper centering, and the other two run along-path, to allow for a fine-tuning image size with fixed focal-length lens.

    Conceptually, you could do the same, but with a much longer set of 'rails.' Cabling, however, will be awkward - you'll need a way to keep the cables from drooping down into people's faces.

    Leo
     
  4. drobbins

    drobbins Screenwriter

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    Use a garage door opener. It could be mounted higher and you would have a remote [​IMG]
     
  5. DanThomas

    DanThomas Agent

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    I have to laugh -- someone else said that to me also. I'm picturing a Tim Taylor-type disaster. [​IMG]

    -Dan
     
  6. Dennis Gardner

    Dennis Gardner Stunt Coordinator

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    The zoom feature doesn't hold enough difference in size for you?

    I set my PJ back as far as the screen will allow at maximum zoom and then the zoom ring allows me to get a smaller more detailed picture when needed. No need to move the PJ.
     
  7. DanThomas

    DanThomas Agent

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    Well, I don't have long enough cables to put the projector at the distance I want, so I'm not sure if the zoom has enough difference or not. The cables should arrive today or tomorrow.

    I do have an idea of how to mount it and have it be movable. If I decide to build it, I'll post some pictures.
     

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