Custom magnetic PJ flush mount - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
Thread Tools
post #1 of 2 Old 12-14-2019, 10:08 AM - Thread Starter
Shane M's Avatar
Join Date: Feb 2002
Location: Canton, MI
Posts: 183
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 92 Post(s)
Liked: 15
Custom magnetic PJ flush mount

This is my second use of this simple projector mount setup I thought I would share. Last time I got pushback about its robustness. In actuality it was overkill before because the projector was very light (10#). Cumulatively I have used this setup for several years now and it's been a really nice clean installation. With this design it's only a 3/4" gap between the top (bottom) of the projector and the ceiling.

M4-stud mounted rare earth magnets: (these screw into mounting holes on PJ and there is enough thread length to accommodate a little roll and tilt). I used QTY (4) MM-C-16 which have 16mm diameter and 12# of pull force. So 48# total. I confirmed via the available gauss map that it would not affect the PJ electronics. They also offer MM-C-20 which has 28# of pull force, which is too much IMO. The Epson 5040 weighs 24lb so I have a safety factor of 2.0. You can always use more if you wanted, but I did not want to over-constrain the installation plane.

Threaded-stud knobs: (these can mount into ceiling with a large washer on the other side to spread the load or directly into a ceiling anchor or stud, if needed. The one I used was here and has a 1" diameter head, so when mating with the magnets I have quite a bit of yaw adjustment as well. Obviously make sure not to buy stainless which would not be magnetic

In my last application I also added a secondary safety cord using metal wire with about 6" of slack - in case the projector was bumped when working around it or it is hit with a ball (the only two credible failure scenarios). I did not do that here but it is probably best practice especially if you have kids.

Hope this helps someone!
Attached Thumbnails
Click image for larger version

Name:	IMG_1001.jpg
Views:	20
Size:	696.3 KB
ID:	2653894   Click image for larger version

Name:	IMG_1002.JPG
Views:	17
Size:	425.7 KB
ID:	2653896  
Shane M is offline  
Sponsored Links
post #2 of 2 Old 12-14-2019, 10:12 AM
BIGmouthinDC's Avatar
Join Date: Jan 2003
Location: Northern VA
Posts: 32,779
Mentioned: 461 Post(s)
Tagged: 5 Thread(s)
Quoted: 6175 Post(s)
Liked: 5868
BIGmouthinDC is offline  
Sponsored Links
Reply Dedicated Theater Design & Construction

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off