I am searching for ways to build a wall mount with a maximum reach of 1.3 meters. I know the following option would void any Ergotron warranty:
For this DIY project I would like to buy the 45-243-026 LX wall mount with the 45-289-026 extension arm.
step 1): I would saw the main arm and the extension arm in half.
step 2): Weld a metal extension bar between both Ergotron aluminum extension arms. The new length of both arms (between the pivot points) would be between 420 or 520mm* (231 mm in the old situation)
step 3): Weld a larger wall plate to the current wall plate.
step 4): Join all the parts
step 5): Bolt the new construction to the wall
step 6): Mount the monitor...... and.... hope for the best????????
Now my question is the following:
Let’s presume the welds and the new extension bar material are strong enough (my expertise
), what would be the maximum load that the new construction would be able to carry? (not my expertise
I do not expect the same maneuverability as an original LX Ergotron. But I do hope that the arms and rotation points don't break and still have some maneuverability.
Maybe you have a formula like “for every extra 10mm extension, the maximum load decreases with.... grams”.
And what happens when you exceed this load? Do the arms break? do the pivotpoints stop pivoting? what is the weakest link in a Ergotron construction?
Thanks in advance!
* This distance depends on the way I would like the maximum extension to be reached. 1) In a straight line (420mm) or 2) zigzag (520mm). I suspect the construction would be stronger and more practical if the arms would 'zig-zag'. But if every mm counts it could be 420mm. (link to a PDF with a ‘zig-zag’ example: http://tinyurl.com/cm5qojl