Replies

1. 
   globaldiver | Mar 19, 2006 05:59am | #1

   What is the air supply in the house?  Surely they don't have a compressor running in the media room.  I know those cylinder's don't use a lot of air, but at some point you'd have to generate more...

   Nice looking cabinet, too!  --Ken

1. 
   Barrie2777 | Mar 19, 2006 02:50pm | #3

   There is a compressor in their workshop which is in a building separate to the house. Air is supplied to the cabinet via a 1/4" air line which runs in an underground conduit. Other than the exhausting of the air, there is no noise in the room with the TV.

1. 
   Ted W. | Mar 19, 2006 02:57pm | #4

   What's in the drawers?-----------------------------------------------------------

   FT Job Wanted: Chicago, north side/North Shore burbs. http://forums.taunton.com/n/mb/message.asp?webtag=tp-breaktime&msg=70809.1

1. 
   Barrie2777 | Mar 19, 2006 04:18pm | #5

   The top "drawer" is a panel which tips forward to let the TV pass. The second "drawer" is a drop down panel to allow access to the satelite receiver and the VCR. The bottom panel can be pulled off to gett o the air valve should the remote control fail to work.

2. 
   gordsco | Mar 19, 2006 07:47am | #2

   Once lifted, does the TV lock in place to be lowered by hand or do the cylinders reverse?

   Do you have an opened picture?

   Gord

1. 
   Barrie2777 | Mar 23, 2006 02:48pm | #7

   I have tried but I cannot get the open picture to upload. This is a problem I often have with internet where I live.

3. 
   Nuke | Mar 21, 2006 06:38pm | #6

   I'd like to see a picture with the TV up for viewing. Also, couldn't you use one of those lower-pressure units that are fairly quiet and locate it within the home? Would a scissor-jack driven by low-RPM high-torque also work?

4. 
   rustbucket | Mar 23, 2006 07:58pm | #8

   Remote control to activate the valves!!! Who's valves...what's the stroke on the cylinders...two way??? How about a pic on the mechanism...wait...I'll go get the beer nuts...sorry, no beer...OSHA's watching.

   rustbucket

5. 
   Winchester | Mar 23, 2006 09:53pm | #9

   on long travel strokes compressed air can be tempermental, prone to erratic motion, especially if two or more cylinders must work in tandem.
   Speed control valves on the cylinders would be important and you may need guide rods to ensure smooth travel.
   Good luck
   Doug

1. 
   Barrie2777 | Mar 23, 2006 09:56pm | #10

   There is no jerky motion in the opening or closing of this unit. Flow controls are on both the up and down strokes. I have tried to send a short video of the operation but it won't go. If you want it individually, please send me youe email address.

2. 
   migraine | Mar 24, 2006 12:48am | #11

   on long travel strokes compressed air can be tempermental, prone to erratic motion, especially if two or more cylinders must work in tandem.Speed control valves on the cylinders would be important and you may need guide rods to ensure smooth travel.

   I did one similar to this and the way we compensated for the unevenness of the  pneumatic piston was to use a a 4 cable pulley system that had a tensioner/turnbuckle on each cable. 

   Other ones we have built were hydraulic, which IMHO run smoother and carry more weight

   When I say we, I do all of the woodworking, and another guy does the drive components.

6. 
   BETRICKEY | Mar 26, 2006 05:46am | #12

   Just a quick question.  From the looks of the picture you are in a cold climate, did you have to bury the air line deep enough to get below the frost line?  Or did you install an air dryer on the supply end?  You have a great idea here and I think that I may want to try the same thing here.

1. 
   Barrie2777 | Mar 26, 2006 02:58pm | #13

   Yes it gets cold here and it would be necessary to bury the line below frost. In this case the line passed in a pipe which connects the house to the workshop specifically installed for fishing wires from the house to the shop. It was below the frost line.