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Old 02-11-2016, 09:35 AM   #1373
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Thanks gypsydad, just to be clear --

I never doubted the ability of silicon to hold the vent in place, given that in a 5" diameter there are EIGHT points of adhesion.

Still doubting the predictable and easy remove-ability of the vent without damaging the ceiling aluminum inner skin . . .

Only a full-scale model from moosetags will provide an answer at this point IMO.



PS -- I have relied on moosetags' photos and descriptions, and have never seen such an AC vent in person. Oh, and plenty of construction experience . . . and logic . . .
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Old 02-11-2016, 09:43 AM   #1374
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Double-Sided Tape

Small pieces of double-sided tape around the outer ring (mounted horizontally, outboard of the vertical tabs) will cure the dropping cover. There are two types of bonding compounds available from 3M; temporary or permanent.

I suggest you try the temporary compound first which holds well, yet can be removed easily without damaging anything. If the covers continue to drop in hotter climates then the permanent compound will cure the issue as it is rated to 212 degrees: just use 4-6 small squares strategically placed. I use both in my shop regularly for a variety of applications with great success.

Temporary:
http://www.amazon.com/3M-Scotch-Doub.../dp/B00I4D3ZTI

Permanent:
http://www.amazon.com/Scotch-Double-.../dp/B00004Z47L
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Old 02-11-2016, 11:23 AM   #1375
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Experiment. Use a dab of silicone on maybe 2 or 3 tabs and assess the difficulty of removal. Go from there.
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Old 02-12-2016, 09:24 AM   #1376
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Quote:
Originally Posted by OTRA15 View Post
Thanks gypsydad, just to be clear --

I never doubted the ability of silicon to hold the vent in place, given that in a 5" diameter there are EIGHT points of adhesion.

Still doubting the predictable and easy remove-ability of the vent without damaging the ceiling aluminum inner skin . . .

Only a full-scale model from moosetags will provide an answer at this point IMO.



PS -- I have relied on moosetags' photos and descriptions, and have never seen such an AC vent in person. Oh, and plenty of construction experience . . . and logic . . .
Thanks; I also have worked on many different aircraft doing sheet metal (aluminum), ventilation systems, etc., back in the day....however, wife looked at this yesterday, and suggested getting sticky velcrow tape strips, and install under vent flange and around opening and trim. Says problem solved...I'm not going to argue with my wife!
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Old 02-12-2016, 09:33 AM   #1377
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Thanks; I also have worked on many different aircraft doing sheet metal (aluminum), ventilation systems, etc., back in the day....however, wife looked at this yesterday, and suggested getting sticky velcrow tape strips, and install under vent flange and around opening and trim. Says problem solved...I'm not going to argue with my wife!
Will the vent still be adjustable and removable? My impression is that the very outside of the silver cover needs to rotate. If so the Velcro would have to permit this.

Moosetags?
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Old 02-15-2016, 08:01 AM   #1378
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Will the vent still be adjustable and removable? My impression is that the very outside of the silver cover needs to rotate. If so the Velcro would have to permit this.

Moosetags?
I have thought about using some small Velcro tabs with the loop on the ceiling, right next to the opening, and the hook on the little grey ring that contacts the ceiling. This would still allow adjustment of the other two pieces.

My only concern with doing this is that the vent becomes quite warm when the heat pump is running. This could compromise the glue on the back of the Velcro pieces.

Brian
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Old 02-15-2016, 08:21 AM   #1379
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Late to this discussion and just throwing out a wild suggestion...but how about trying a spring to help hold the vents up? Similar to how inner sleeves of recessed can lights are held in place. With enough tension to assist the holding of the tabs but with enough spring to pull the vent down to attach/detach the spring. Just a thought....
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Old 02-15-2016, 08:35 AM   #1380
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I have same issue as Moosetags on our 2015 30' FC. All vents were converted to adjustable and I did the replacement myself. When I took the non-adjustable out I saw the BIG difference in design between the two vents. The non-adjustable are metal tabbed and very hard to remove, the new adjustable are plastic and I could easily install and remove. SO, I put ductape on the circle of the inside skin for each hole, then applied gorilla glue to the tabs on each of the vents. If any fall out I may try loctite red as my next experiment. Really don't plan on taking them out in the future so don't care about removal.

I just looked on Amazon for RVT Sealant and found one that is designed for high heat areas, ie around fireplaces. So, may, if the vents fall again, try this approach.

High Heat Velcro Link:

http://www.rochfordsupply.com/shop/U...%29/index.html
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Old 02-15-2016, 08:41 AM   #1381
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Ditto Brian to your concern about heat compromising the Velco adhesive, especially where the Velco adheres to the plastic vent base, if I have understood this assembly correctly.

Recent suggestion for spring may be difficult IMO. Where would the spring attach at the top end? Inside the round (flexible?) duct? Sounds as if this solution might create new problems of its own IMO. [deforming the duct wall, sagging, etc.]

PS Brian would you please try my Fred Flintstone solution with aluminum foil on (only) three tabs, and see if it helps keep the vent cover up? Each journey begins with one small step?

Thanks,

Peter
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Old 02-15-2016, 09:24 AM   #1382
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We have a 2016 26U - after the first few trips, vents started falling out. Agree seems to be a widespread problem
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Old 02-15-2016, 10:32 AM   #1383
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The old spring clips sound interesting. Is there a reason why you didn't switch out the clips from fixed to adjustable?
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Old 02-15-2016, 01:08 PM   #1384
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The old spring clips sound interesting. Is there a reason why you didn't switch out the clips from fixed to adjustable?
The metal clips on the OEM vents are spot welded to the the metal trim ring. I don't see any way to attach them to the adjustable vent plastic base ring.

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Old 02-15-2016, 02:27 PM   #1385
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Man...you guys could turn making toast into a 3 week discussion...

Clear RTV and be done with it.
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Old 02-15-2016, 02:31 PM   #1386
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Well, it depends you make the toast on a regular toaster or one of those gizmos you put on the stove burner.

But yes, RTV cures a lot of problems. I used it on light covers that popped off all the time. Fixed it.
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