Hi Folks;
Here's a few pictures of the custom-made screen lift device I have nearly completed. I recently installed this in my basement ceiling, and I will soon install the controls for it.
I want to be able to use the TV for basic junk, and the screen and projector for better viewing. I don't really like roll-up screens, and I wanted something that kind of looks like home automation, that few people would have. This reminds me of airplane landing gear swinging up after take-off. (or hopefully down before landing).
It took me a year and a half of lunchtimes in the little machine shop at work, but it's been a lot of fun. I have powered it several times, and there's no problem with the motor and gear box lifting the weight. The gear box is a 60:1 worm gear with 1200 inch-pounds of output torque. The motor also has a small gear box mounted right on it, and outputs 40 rpm, so overall, the screen moves up or down in about 20 seconds.
The screen frame is made of wood dowels, and plywood flat pieces and I have just stretched some Sportlight Nylon on the frame to make the screen surface, albiet still a little wrinkled. It'll be neat to get the controls all in place, hit one button on the remote and watch it go. Limit switches will stop it at the right up or down position.
So, feel free to ask questions and/or tell me how nuts I am for taking all this time to make it. Cheers, Tom Kay, Ottawa Canada.
Here's a few pictures of the custom-made screen lift device I have nearly completed. I recently installed this in my basement ceiling, and I will soon install the controls for it.
I want to be able to use the TV for basic junk, and the screen and projector for better viewing. I don't really like roll-up screens, and I wanted something that kind of looks like home automation, that few people would have. This reminds me of airplane landing gear swinging up after take-off. (or hopefully down before landing).
It took me a year and a half of lunchtimes in the little machine shop at work, but it's been a lot of fun. I have powered it several times, and there's no problem with the motor and gear box lifting the weight. The gear box is a 60:1 worm gear with 1200 inch-pounds of output torque. The motor also has a small gear box mounted right on it, and outputs 40 rpm, so overall, the screen moves up or down in about 20 seconds.
The screen frame is made of wood dowels, and plywood flat pieces and I have just stretched some Sportlight Nylon on the frame to make the screen surface, albiet still a little wrinkled. It'll be neat to get the controls all in place, hit one button on the remote and watch it go. Limit switches will stop it at the right up or down position.
So, feel free to ask questions and/or tell me how nuts I am for taking all this time to make it. Cheers, Tom Kay, Ottawa Canada.