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04-07-2016, 01:11 PM
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#1
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Rivet Master
1999 28' Excella
New Orleans
, Louisiana
Join Date: Aug 2012
Posts: 883
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Things that go bump in the day?
Full-timers to start and spend more time in our trailer than a vacationer.
The 3 years we have been on the road at times we hear this bump. First we thought birds fly into Airstreams gently. It sounds like a tennis ball hitting the trailer tossed softly. The sound does not seem to be coming from the same place.
Has anybody had this experience and is it more likely on a sunny day?
It just happened so I thought this is the right time to ask.
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04-07-2016, 01:18 PM
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#2
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Rivet Master
1962 28' Ambassador
1961 19' Globetrotter
1962 26' Overlander
Mesa
, Arizona
Join Date: Jun 2013
Posts: 5,996
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It might be something referred to as oil canning. The aluminum reacting to the heating and cooling of the day.
Someone will likely explain that better but does it sound like that could be an explanation.
__________________
Hittenstiehl
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04-07-2016, 01:35 PM
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#3
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Rivet Master
1999 28' Excella
New Orleans
, Louisiana
Join Date: Aug 2012
Posts: 883
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Our trailer does not have waves in the metal like oil canning does. Maybe it is some kind of expansion?
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04-07-2016, 01:37 PM
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#4
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4 Rivet Member
1973 31' Sovereign
Middletown
, California
Join Date: Oct 2013
Posts: 424
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Agree that it's most likely "oil-canning" from temperature changes. My trailer ticks and creaks as clouds cover and uncover the sun when parked in the sun. The inner and outer skins expand at different rates under different conditions and I'd bet we would shocked at the stresses this can apply to the structure if we saw the numbers. I think the expansion and contraction is what causes a lot of leaks.
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04-07-2016, 03:12 PM
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#5
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Rivet Master
1999 28' Excella
New Orleans
, Louisiana
Join Date: Aug 2012
Posts: 883
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The leak thing does worry me but we seem to be fine but there are always those hidden things that we are not aware of. I do feel this is an expansion thing though.
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04-09-2016, 08:23 PM
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#6
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Rivet Master
2015 25' Flying Cloud
2016 30' Flying Cloud
Blenheim Ontario
, Ontario
Join Date: May 2015
Posts: 1,263
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Ever been to Boston?
Could be "The Boston Boogyman"!
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04-09-2016, 09:20 PM
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#7
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Rivet Master
Currently Looking...
Walnut Creek
, California
Join Date: May 2015
Posts: 3,952
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We were resting one morning when we heard a thump. Squirrel was harvesting nuts and was bombing the trailer. When we walk across the floor, the belly pops a bit. And then there is the Bear and the bacon thing. Do you cook bacon inside or outside the trailer?
Safe travels. Pat
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04-10-2016, 06:48 AM
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#8
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Rivet Master
2007 30' Classic
Oswego
, Illinois
Join Date: Jul 2010
Posts: 13,668
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Greasy meats are cooked outdoors.
__________________
-Rich-
"If the women don't find you handsome, they should at least find you handy." - Red Green
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05-10-2016, 04:27 PM
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#9
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Rivet Master
1999 28' Excella
New Orleans
, Louisiana
Join Date: Aug 2012
Posts: 883
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We are in Santa Fe, NM and I guess we will continue to hear our little maybe "oil canning" noises and it is when the sun is out. Does anyone else hear this thump like a bird flew the wrong way and bounced off?
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05-10-2016, 04:46 PM
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#10
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Rivet Master
Currently Looking...
Mantua
, Ohio
Join Date: Jul 2005
Posts: 7,062
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Anybody whose lived in a mobile home has heard the bumps.
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05-11-2016, 04:54 AM
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#11
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Rivet Master
2012 25' FB Eddie Bauer
Vintage Kin Owner
Virginia Beach
, Virginia
Join Date: Sep 2004
Posts: 7,801
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In eastern Virginia it's gum ball trees. They drop these nasty spiney things that will turn your ankle, and it can sound like a stone. And the squirrels - In some campgrounds they'll KNOCK on the door looking for treats. Cheeky buggers.
My partner Bob was startled by the sound of the rain on the roof of the Avion. I told him I find it soothing... don't think he gets it.
Paula
__________________
Today is a gift, that's why they call it the present.
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05-11-2016, 06:31 AM
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#12
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Rivet Master
2020 28' Flying Cloud
Upper St Clair
, Pennsylvania
Join Date: Aug 2011
Posts: 2,943
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Are you sure it's not from under the trailer from the storage tank(s) area, either fresh, grey or black? All three of our AS have done this, but almost always when either we or one of our Labs steps in a certain place.
__________________
2020 28' Twin Flying Cloud
2021 F350 6.7 King Ranch
USAF Master Training Instructor (TI) & (MTI)- 68-72
Volunteer K9 Rehabilitator & Trainer
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05-11-2016, 08:27 AM
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#13
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Rivet Master
2012 25' Flying Cloud
Battle Lake
, Minnesota
Join Date: Jun 2009
Posts: 7,714
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It's a pop from thermal expansion of the shell panels, usually as the sun hits them in the morning. There is also thermal expansion of thunder body panels, usually heard walking back and forth through the trailer, sometimes mitigated by adjusting the stabilizers.
__________________
Doug and Cheryl
2012 FC RB, Michelin 16, ProPride 1400
2016 Ram 1500 Laramie Crew Cab 4X4 Ecodiesel 3.92 axles
The Truth is More Important Than the Facts
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05-11-2016, 03:06 PM
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#14
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Rivet Master
1999 28' Excella
New Orleans
, Louisiana
Join Date: Aug 2012
Posts: 883
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We are sitting on the couch during the day and the sounds are sides of the trailer. I think thermal expansion might be it but you guys do not hear these..lol? Are we the only ones? Is it when we have cool nights and sunny days?
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