Vent cap mods - Escape Trailer Owners Community

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Old 04-15-2015, 10:45 PM   #1
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Vent cap mods

Looking at the vent cap one thing puzzled me. It's symetrical yet one end faces rain and hail hitting it at highway speeds. But the "front" does not have the 1" high lip the sides have that would offer more resistance to rain being driven in. You can put your fingers in the front and easily touch the mesh.

Also, the material is thin and mine had warped and was sloped to the inside. So I made a lip to match the side ones and now my vent has a "front" and "back". This may also be better at preventing the flame from blowing out at highway speeds, who knows, but I did it primarily to prevent leaks.

Also, I lined the underside of the cap with reflectix to try and limit the heat from solar gain. I'll never know if it helps a wee bit but it didn't cost anything so I did it.

Ron
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Old 04-15-2015, 10:51 PM   #2
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I've been toying with mounting exhaust fans way up there to possibly help with fridge cooling............
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Old 04-15-2015, 11:17 PM   #3
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I was thinking of doing that too. I was thinking that a crossflow fan might be a good type for that area because there're more linear. If one was placed under the condenser that would be a pretty good flow of air. Or a couple of small computer fans, haven't decided yet. Another project for another day

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Old 04-16-2015, 01:23 AM   #4
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Computer fans would be cheap and easy to mount; if the added airflow proved effective I might upgrade to a better crossflow where I could vary the speed for quietness. I have found mounting more than one cheap 12V computer fan can result in a "beat rate" noise due to speed differences.
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Old 04-18-2015, 07:05 PM   #5
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Finished off the baffle project and re-installed the vent cap. The flange material is very thin and was warped so I used fender washers under the screw heads. ETI uses dollops (highly technical term ) of sealant to cover the screw heads but I used EPDM washers to form a compression seal instead.

Time will tell if the ducted baffle project works or not.

Ron
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Old 04-18-2015, 07:25 PM   #6
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So it looks like the new lip you fabricated is a rectangle of sheet metal? Do the existing lips stay in place and how is it fastened?

I have not been inside my vent yet so you are talking to the uninformed.
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Old 04-18-2015, 07:27 PM   #7
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has anyone looks imto the solar roof vents:
http://www.amazon.com/Camco-42165-Re...f+vent+dometic
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Old 04-18-2015, 07:59 PM   #8
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Originally Posted by 7th Heaven View Post
The shape makes sense, but this product does not include the base part, so it won't address the issues which Ron raised.

I see some logic of the panel to run the fan in an RV without any solar panel, but if the trailer already has much bigger and better panels, the little panel on this vent doesn't make much sense to me. Also, it appears from reviews that at least the early panels were poorly constructed.
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Old 04-18-2015, 08:17 PM   #9
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has anyone looks imto the solar roof vents:
http://www.amazon.com/Camco-42165-Re...f+vent+dometic
I bought this exact item and sent it back after I pulled it out of the box. It is VERY poorly made with thin plastic. I figured it would crack in a year or so, and the solar panels are hot welded in place - can't be repaired.
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Old 04-18-2015, 08:20 PM   #10
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Originally Posted by fudge_brownie View Post
So it looks like the new lip you fabricated is a rectangle of sheet metal? Do the existing lips stay in place and how is it fastened?

I have not been inside my vent yet so you are talking to the uninformed.
Yes, the front lip or rim that I fabricated is a piece of light aluminum. It goes down each side an inch and a small sheet metal screw holds in place.

The part that extends forward is there because, as you might be able to see in the first photo, the base is warped and slopes to the interior. The new front rim was bedded in caulk to seal it.

Ron
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