View Full Version : help with slide for cih lens


mr_fitz
07-23-08, 10:40 AM
So I ordered an htb lens and I am almost finished building my slide for it.

I have a bulk head just above and barely in front of my projector lens so I attached two drawer slides horizontally to the bulk head. I screwed a piece of wood vertically to the drawer slides and then at the bottom I have another piece of wood attached horizontally to attach the lens.

The problem I have is that when I slide the lens out away from my projector, because the center of gravity for my setup is not in line with the vertical piece of wood it starts to torque. So I need to add a counterweight at the back.

Any ideas as to what is fairly cheap, is smaller than 9in x 5in, and would weigh about 5lbs.

Thanks

John

Papajin
07-23-08, 01:43 PM
You might be able to fill some sort of container with sand. I don't know what you have to work with as far as trying to mount something to the back though so you're on your own for container choice. I'm only guessing on whether or not sand will produce enough weight in the space you have as well, but it's an idea at any rate!

D_B_0673
07-29-08, 04:23 PM
need a picture of your setup

mr_fitz
07-31-08, 12:06 AM
I ended up buying connector plates for post fencing. They came in 0.5 lb 4"x4" size so easily stackable and adjustable.

mr_fitz
07-31-08, 05:15 PM
Here is my lens setup. Not completed yet but close. Need to paint or cover my lens slide to make it look pretty. :)

syncguy
08-15-08, 12:37 PM
Check the specs of the slides, whether they can take the weight. A drawer has two sides hence there is no sideways movement. In your case it could move sideways and put pressure on the slides.

mr_fitz
08-15-08, 07:17 PM
Check the specs of the slides, whether they can take the weight. A drawer has two sides hence there is no sideways movement. In your case it could move sideways and put pressure on the slides.

Hence the reason I put the counter weight on the back so that there was only a downward force on the drawer slide.