Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-21-2015, 05:34 PM   #1
Trying to run away.....
 
Currently Looking...
Hampton , Virginia
Join Date: Sep 2013
Posts: 124
31-34' aft of the axles frame inspections

Anyone have any comments about the long term stress on the rear frame section? Looking at several different AS with the long rear frame section aft of the axles. This area looks like an area I need to part particular attention to while inspecting as well as down the road.

Just hoping to hear what people have seen, repaired, or whatever.
__________________

__________________
HeavyAssault is offline   Reply With Quote
Old 02-21-2015, 06:31 PM   #2
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
Usually, frame damage is caused by rear end separation from poor maintenance which leads to water intrusion and degradation of the connections between the frame and the shell. The shell supports the frame. The biggest culprit is the plate at the back that funnels water under the rear of the trailer which rots the floor and frame back there. Rear bath trailers are the ones you want to stay away from in long trailers. In the late 70's they started putting center baths in trailers and had less issues with rear end separation. These center bath trailers are also easier to repair at the rear. In the late 70's they started using a box beam for the rear frame rails where before that it was a single channel. In the early 80's they went to OSB floors that tend to rot fast.

Perry
__________________

__________________
perryg114 is offline   Reply With Quote
Old 02-22-2015, 07:15 AM   #3
Trying to run away.....
 
Currently Looking...
Hampton , Virginia
Join Date: Sep 2013
Posts: 124
Is this commonly found on 2000-newer trailers? Poor maintenance meaning monitoring rivets?
__________________
HeavyAssault is offline   Reply With Quote
Old 02-22-2015, 08:36 PM   #4
1 Rivet Member
 
1978 23' Safari
Verona , Missouri
Join Date: Aug 2014
Posts: 15
The shell supporting the frame seems counter-intuitive since all loads are ultimately transferred through the trailer frame and the shell even when removed requires the support of some type of frame. When removing the shell from the trailer on my 23' 1976 Safari I noted that there was little or no frame under the rear corners of the shell. There is a .090 thick steel angle plate bolted to the frame rear channel to which the aluminum shell is is riveted, this area was separated but there was also corrosion due to the dissimilar metals in contact without galvanic isolation.

I'm planning to weld a steel support frame extension around the back corners so I can bolt the shell to some frame feature in this area as it's not that difficult to do. The frame z-channel at the rear in this vintage seems to be pretty cheesy though, still thinking about how to rework this area given the plumbing and wasetwater tanks.
__________________
tjoneillMO is offline   Reply With Quote
Old 02-23-2015, 09:03 PM   #5
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
The more connections between the frame and shell the better. I have suggested a perimeter frame with bolts every few inches. The shell and frame need to be one. The shell is very strong since it has a lot of moment of inertia.

Perry
__________________
perryg114 is offline   Reply With Quote
Old 02-24-2015, 07:16 PM   #6
1 Rivet Member
 
1978 23' Safari
Verona , Missouri
Join Date: Aug 2014
Posts: 15
I agree--just bolting the shell channels to the outriggers looks pretty weak too. It's not that big a deal to weld a 1/4 x 2.5 bar into the top of the outriggers and have complete perimeter support.

Tim
__________________
tjoneillMO is offline   Reply With Quote
Old 02-24-2015, 10:00 PM   #7
cwf
Rivet Master
 
cwf's Avatar
 
1999 34' Excella
Currently Looking...
Hillsboro , Texas
Join Date: Feb 2013
Posts: 5,934
Images: 2
my 1999 34' had an issue with the 'frame' on the street side, aft of the axles. It was determined that the AS had been left 'nose down' on a mountain in New Mexico where snow drifts spent a lot of time in contact with the AS. The rust removed, the frame strengthened and rear separation avoided.

Timely checkups... key.
__________________
Peace and Blessings..
Channing
WBCCI# 30676
cwf is offline   Reply With Quote
Old 02-25-2015, 09:38 AM   #8
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
I was thinking more of a piece of angle iron or channel.

Perry

Quote:
Originally Posted by tjoneillMO View Post
I agree--just bolting the shell channels to the outriggers looks pretty weak too. It's not that big a deal to weld a 1/4 x 2.5 bar into the top of the outriggers and have complete perimeter support.

Tim
__________________
perryg114 is offline   Reply With Quote
Old 02-25-2015, 11:15 AM   #9
Rivet Master
 
JimGolden's Avatar
 
Vintage Kin Owner
1977 31' Excella 500
Berkeley Springs , West Virginia
Join Date: Sep 2005
Posts: 1,619
Images: 7
They deepened the frames in 1985 and a lot of the issues went away.

Not totally sure, but would imagine a 31' has a greater rear overhang than a 34'.

I'm not a big believer in the shell holding up the frame theory. I think there are too many cutouts for it to really be monocoque. But, most of the ill stories I heard were in the pre-1886 years.

I would think a 2000 or newer would be fine. Make sure to balance your running gear and haul your black smith tools in the front, and you should be OK
__________________
- Jim
JimGolden is offline   Reply With Quote
Old 02-25-2015, 01:09 PM   #10
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
There are cutouts Jim but most of them like the windows have frames around them that take up the load. If there were holes without frames then you have a weak spot there. The door opening is the biggest weak spot. Even the OEM vents on the older trailers have aluminum frames around them. Cutting those out to put in a fantastic fan is not wise.

Perry
__________________
perryg114 is offline   Reply With Quote
Old 02-26-2015, 07:50 PM   #11
1 Rivet Member
 
1978 23' Safari
Verona , Missouri
Join Date: Aug 2014
Posts: 15
Steel angle would be easy enough to install as perimeter support, where curved it would need to be formed or you could cut plate and attach a flat bar to make a formed angle. The outriggers on my '78 are formed out of .110 thick steel and look to provide a decent amount of support but more is probably better here.
Tim
__________________

__________________
tjoneillMO is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Axles Axles Axles GeocamperAS Axles 33 11-20-2015 01:01 PM
insulating the aft under bed storage wmarsha Exterior Storage Compartments & Access Doors 3 08-02-2009 05:07 PM
Power Twin Stabilizers and fore/aft trailer movement on campsite with slight grade TX_Streamer Jacks, Stabilizers, Lifting and Leveling 7 10-24-2007 11:00 AM
aft frame repair daveinbama Repairing/Replacing Floor &/or Frame 2 07-19-2004 07:16 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:40 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.