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Old 02-18-2013, 12:52 PM   #1
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New light fixture in the ceiling

We're looking to install a new light fixture, attached to the ceiling of our '95 Sovereign.

Before I drill any holes or screw anything in the ceiling: what can I use to attach the new fixture to the ceiling (which unfortunately doesn't fit the existing holes of the old fixture) ?

I've been looking at other things installed on the ceiling, like the light switch and other light fixtures and it seems that they are simply installed with small screws into the ceiling.

Thanks!
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Old 02-20-2013, 12:58 PM   #2
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Anyone?
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Old 02-20-2013, 02:35 PM   #3
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Hi jorvango,

The fixtures in our Avion are attached with screws which seem to work fine. I prefer using rivets though in applications where removal to service the device is not a requirement.

When drilling new holes give thought to what is behind the panel. Cutting wires isn't any fun.

Good luck,

Kevin
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Old 02-20-2013, 02:42 PM   #4
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Lightweight items are usually attached either with adhesive or sheet metal screws. The screws work best if they go into a rib although for a lightweight item that may not be necessary.

You can also use captive nuts, and a machine screw.
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Old 02-22-2013, 03:17 PM   #5
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Is there an easy way to find a rib? Can I use a studfinder?
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Old 02-22-2013, 03:24 PM   #6
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Quote:
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Can I use a studfinder?
Not really, they are aluminum, hence nonmagnetic, and also behind aluminum.
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Is there an easy way to find a rib?
This is the good news. See where the pop rivets are holding the inner (and outer for that matter) skin pieces are? That's where the ribs are.
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Old 02-22-2013, 03:33 PM   #7
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Jornvango, I'm about to attach a new light fixture as well and have decided to go with rivets.

Vswingfiield, anything special we should know about going into a rib (other than location)? Do you know how far apart they are?

Thanks,

Lynn
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Old 02-22-2013, 03:54 PM   #8
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Jornvango, I'm about to attach a new light fixture as well and have decided to go with rivets.

Vswingfiield, anything special we should know about going into a rib (other than location)? Do you know how far apart they are?

Thanks,

Lynn
Hi Lynn

I'm at work right now, so I can't tell you exactly how far apart they are. (It's Friday afternoon, OK? ) I can look later.

As far as light fixtures go, I'd use screws rather than rivets. That's what the factory does. In my experience, light fixtures may need to come back down. Of course, not so often that drilling rivets would be that big a deal. I am going more by what they did in JC.

All the fixtures in both Airstreams are secured with screws. All I have done is switch to stainless steel screws, but I've done that whenever I take one of the original screws out regardless of the location.

Also, for light fixtures, I wouldn't worry about the ribs. Again, none of mine are attached to the ribs. Light fixtures just aren't that heavy and they usually have ample (4 is really enough) holes for screws. I recently redid one of the original vent/light combos from fluorescent tubes to LED strips. These are pretty big fixtures and they are secured with 6 screws into the skin. You can see photos here: http://www.airforums.com/forums/f447...ght-99858.html

On completely another topic, I miss the Hill Country. I bought my Trade Wind in San Marcos when I lived between Wimberley and Driftwood. Lovely area.
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Old 02-23-2013, 07:55 AM   #9
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Thanks for the info. I'll post a new thread with my light install soon.
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Old 05-03-2013, 11:01 AM   #10
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I assume I will need to drill new holes in the skin? How long screws can I use?
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Old 05-03-2013, 03:09 PM   #11
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Most of the ones in my trailers are bout 3/4". I bought a bunch of 3/8" screws and only use the longer ones where the extra length is necessary. Most of the time I'm attaching something very thin, like a light fixture, to the interior skin and the object being fastened goes right against the skin making the extra length just more turns on the screw.
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