I wanted to like this mount, it's affordable and looks good (better than many of the other mounts out there) however I've struggled to get it "tuned" just right and the limited adjustments on it don't leave a lot of room for mounting options if you don't get it "just right"
I also found that after I got everything squared away, it was very easy to knock out of place.
I had no problems mounting this to my ceiling and to my InFocus IN72, thanks to helpful people around the net Dustin's Blog, for example, has a nice, step-by-step guide complete with photos for installing this mount http://blog.dustinrue.com/monoprice-pj-ceiling-mount/
The'res even a 2-page thread in the AVS forum about installing this babe http://www.avsforum.com/avs-vb/showthread.php?t780736
I followed Dustin's advice and left the bolts inside and then unscrewed them, that is, used the provided Hex key counterclockwise so they press firmly inside the tube.
It's true that there are a lot of leftover parts after you're finished, but that is not a concern They were put there for specific projector models. If you don't need them, just don't use them. And regarding those weird white plastic screwlike things those are called in Spanish taco fischer, and are used to screw bolts into in concrete slabs, which was my case. So you see... what is a leftover part for you can be a vital piece for someone else!
Excellent value. The mount is a little bit awkward to setup and is really best with 2 people. Other than that, the mount is rock solid, Ive had it installed for 3 months and theres been no creep at all. Compared to the local offerings Ive seen at a minimum of $100, theres no way Id recommend anybody buy anything else.
For those planning to buy this, here is what you need to know
1) Put the 3 arms on the projector first. Use included screws. Let them slightly loose so they can swivel. 2) Next, take the plate and insert the 3 arms into the 3 grooves... they will slide free into the grooves. 3) Now rotate the plate clockwise, and the 3 arms will start to slide into the groove until eventually they cannot slide anymore because of radial tension. With a little luck, the screws on the projector are visible at this point, and not obstructed by the arms. Tighten them at the projector. 4) Tighten the 3 arms now at the plate too. 5) The main rod attaches to the secondary rod with a simple dual springloaded screw mechanism. You first need to turn these screws clockwise until they reach their maximum depth. DO NOT TIGHTEN OR YOU WILL BREAK THE PLASTIC INSERT. Just let it bottom out, and stop!!! 6) Now insert one rod into the other, until the spring-loaded screws snap out and through the holes. 7) Now you need to UNSCREW both screws. UNSCREW TO TIGHTEN! Not intuitive, but that's how it is. You are basically unscrewing the bolts so they press outwards against the rod. You can do this as hard as you want/can for a very tight and solid fit, nothing can break. This is key, you must unscrew for a tight fit. 8) The springloaded mechanism is in fact present in two sections of the mount. You can apply the same principle at the base for a sturdy mount. 9) Optionally, if you want to make sure that the swivelling mechanism (which allows the pj plate to swivel/rotate 15 degrees in all directions) stays in place when you adjust it to a certain position, you can tighten the screw/bolt that holds it in place. I went ahead and did that, and it made the swivel joint tighter. It's slightly harder to tilt now, but it stays in place rock solid.
I couldn't be happier with this mount. I know others have not-so-good things to say, but if you do it right, it is rock solid.
I will post pics with a proper tutorial once I find the time, but I wanted to share this quickly.
Installed in a few minutes. Adjusts easily in forward and lateral directions. Required some tightening of adjustment nut to keep cables from misaligning the projector. Has two posts for different height installation. Easy to set in place and to remove with push pin bolts in mounting post, which are tightened for safety with hex key once installed. Nice feature when installing from a step ladder on a high ceiling. You do not have to hold and tighten at the same time.
Great item, comes with screws that fit the bottom of my projector. As others have said there are a lot of left over pieces but it is very secure on the ceiling. I gave a 9/10 only due to the fact that there doesn't seem to be a way to lock the position so it could alter the image alignment if anything disturbed the mounting.
It's unanimous the directions are almost useless. That's the only reason for 9 out of 10 though. You will not find a better value than this for a mount. It's very sturdy and versatile. It didn't come with screws that fit my projector, but once I found some it was a snap.