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09-19-2014, 05:28 PM
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#1
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Rivet Master
1967 24' Tradewind
Alameda
, California
Join Date: Feb 2004
Posts: 1,570
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Rib length?
Hello,
So we're looking at the interior of the outside skin, and some of the ribs are shorter than others at the bottom end. Is that normal? I'm guessing it is, what are they for? Holding the shell shape, and I'm also thinking they are obviously for attaching the inner shell to. Just like the framing of a house. But I removed the belly pan years ago and I can't remember if these were normally different lengths or not. Here are pictures. I'd appreciate some input. Mmmm. Short ribs.
__________________
"Let's look Death in the face and say, 'Whatever man.'"
~ Hurley
ingrid
1967 24' Tradewind #19104 ~ Forums #4449
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09-19-2014, 05:34 PM
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#2
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Rivet Master
2014 27' FB Eddie Bauer
Chelsea
, Michigan
Join Date: May 2010
Posts: 1,792
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That doesn't seem right to me. I just finished gutting a '72 Overlander @ Colin Hyde's shop a week ago and all of the vertical ribs went into the C-channel at the base of the outside skin. Seems to me that those structures would be required to keep the body securely on the frame. I'd consider riveting in some sort of rib "extensions" so that each rib is firmly attached to the C-channel.
__________________
Bob Martel
WBCCI# 5766
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09-19-2014, 05:53 PM
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#3
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Rivet Master
2007 30' Classic
Oswego
, Illinois
Join Date: Jul 2010
Posts: 13,669
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I seem to remember Andy saying is was normal on some older models. PM him and ask.
__________________
-Rich-
"If the women don't find you handsome, they should at least find you handy." - Red Green
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09-19-2014, 05:55 PM
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#4
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Rivet Master
1967 24' Tradewind
Alameda
, California
Join Date: Feb 2004
Posts: 1,570
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Maybe they were attached to banana wrap?
__________________
"Let's look Death in the face and say, 'Whatever man.'"
~ Hurley
ingrid
1967 24' Tradewind #19104 ~ Forums #4449
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09-19-2014, 05:56 PM
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#5
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Rivet Master
1967 24' Tradewind
Alameda
, California
Join Date: Feb 2004
Posts: 1,570
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No forget that that would make no sense.
__________________
"Let's look Death in the face and say, 'Whatever man.'"
~ Hurley
ingrid
1967 24' Tradewind #19104 ~ Forums #4449
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09-19-2014, 05:59 PM
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#6
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Rivet Master
1967 24' Tradewind
Alameda
, California
Join Date: Feb 2004
Posts: 1,570
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What's Andy's user name?
__________________
"Let's look Death in the face and say, 'Whatever man.'"
~ Hurley
ingrid
1967 24' Tradewind #19104 ~ Forums #4449
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09-19-2014, 06:02 PM
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#7
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3 Rivet Member
1976 23' Safari
1962 22' Safari
1961 16' Bambi
Philly burbs
, PA
Join Date: Apr 2011
Posts: 185
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I just took the interior walls off my 62 Safari and found a similar situation and then they added more rib. I'll get pics this weekend.
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09-19-2014, 06:22 PM
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#8
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Rivet Master
1967 24' Tradewind
Alameda
, California
Join Date: Feb 2004
Posts: 1,570
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Yes please. I'll try to figure out what the deal is in the meantime. If I can't get input I'll call The VAP!!
__________________
"Let's look Death in the face and say, 'Whatever man.'"
~ Hurley
ingrid
1967 24' Tradewind #19104 ~ Forums #4449
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09-19-2014, 06:24 PM
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#9
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Rivet Master
2007 30' Classic
Oswego
, Illinois
Join Date: Jul 2010
Posts: 13,669
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Andy's screen name:
Inland RV Center, In
__________________
-Rich-
"If the women don't find you handsome, they should at least find you handy." - Red Green
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09-19-2014, 06:30 PM
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#10
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3 Rivet Member
1976 23' Safari
1962 22' Safari
1961 16' Bambi
Philly burbs
, PA
Join Date: Apr 2011
Posts: 185
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short ribs
Here's what I found behind the skins!
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09-19-2014, 06:38 PM
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#11
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Rivet Master
1951 21' Flying Cloud
1960 24' Tradewind
Folsom
, California
Join Date: Dec 2003
Posts: 727
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My '60 Tradewind Ribs end at various and sundry heights, except at the 1st and last "bow" ribs, which make it all the way to the bottom of the track . . . I think the "argument" in favor of justifying the willy-nilly rib lengths has something to do w/ the "monocoque" design.
__________________
Aluminumbskull with Led Balloon in Drag
***
Birch Plywood and Aluminum go together like
Peanut Butter and Chocolate
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09-19-2014, 07:22 PM
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#12
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Rivet Master
1967 24' Tradewind
Alameda
, California
Join Date: Feb 2004
Posts: 1,570
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I left a message for the guys at The VAP, and I have another source. Let's see what we find out.
__________________
"Let's look Death in the face and say, 'Whatever man.'"
~ Hurley
ingrid
1967 24' Tradewind #19104 ~ Forums #4449
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09-19-2014, 07:25 PM
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#13
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Rivet Master
1967 24' Tradewind
Alameda
, California
Join Date: Feb 2004
Posts: 1,570
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Surfpodthat looks like a second outer skin, maybe a replacement/repair job for that part? Look at my picture, there's another layer on mine too.
__________________
"Let's look Death in the face and say, 'Whatever man.'"
~ Hurley
ingrid
1967 24' Tradewind #19104 ~ Forums #4449
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09-23-2014, 11:23 AM
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#14
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4 Rivet Member
1963 28' Ambassador
Vintage Kin Owner
Northern VT
, Vermont
Join Date: Aug 2007
Posts: 360
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Normal, on the ones I've done, all pre '68, the front corner .032 channel type ribs are not connected to the floor. What has really shocked me is how few of the original extruded aluminum body bows [ribs] that are not connected to the C channel or floor. The worst example I've seen is my '62 ambassador. Only 2 full length bows connected to the floor, at the front and rear end caps. Every other rib stops at the top center and not attached to the floor, none full length and no apparent reason why not. Even the ones on either side of the entry door not anchored. I extended and anchored all.
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09-23-2014, 12:02 PM
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#15
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by putback
Normal, on the ones I've done, all pre '68, the front corner .032 channel type ribs are not connected to the floor. What has really shocked me is how few of the original extruded aluminum body bows [ribs] that are not connected to the C channel or floor. The worst example I've seen is my '62 ambassador. Only 2 full length bows connected to the floor, at the front and rear end caps. Every other rib stops at the top center and not attached to the floor, none full length and no apparent reason why not. Even the ones on either side of the entry door not anchored. I extended and anchored all.
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That is absolutely normal.
Andy
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09-23-2014, 12:03 PM
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#16
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by pinkflamingoes
What's Andy's user name?
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Which Andy?
Andy
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09-23-2014, 12:40 PM
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#17
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Rivet Master
2014 27' FB Eddie Bauer
Chelsea
, Michigan
Join Date: May 2010
Posts: 1,792
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I'm no structural engineer so I cannot give an expert opinion about any problems the "short ribs" might cause, but my intuition suggests this could be a problem. If it this occurred on my rebuild, I would make sure all the ribs extended and were secured to the C channel. It would not be a big deal to do this when the trailer is in a deconstructed condition.
__________________
Bob Martel
WBCCI# 5766
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09-23-2014, 01:14 PM
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#18
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Rivet Master
1967 24' Tradewind
Alameda
, California
Join Date: Feb 2004
Posts: 1,570
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That's what we were thinking. Most of the ribs are U channel so since w're getting ready to fab or buy some, we think we'll just extend what is there. He says it's easy and can't hurt not to.
__________________
"Let's look Death in the face and say, 'Whatever man.'"
~ Hurley
ingrid
1967 24' Tradewind #19104 ~ Forums #4449
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09-23-2014, 01:17 PM
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#19
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Rivet Master
1967 24' Tradewind
Alameda
, California
Join Date: Feb 2004
Posts: 1,570
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Then I start to worry about lengthening and connecting the ribs making things to stiff. I always find something to worry about.
__________________
"Let's look Death in the face and say, 'Whatever man.'"
~ Hurley
ingrid
1967 24' Tradewind #19104 ~ Forums #4449
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09-23-2014, 01:21 PM
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#20
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Rivet Master
1972 31' Sovereign
1975 31' Excella 500
Currently Looking...
Benton
, Arkansas
Join Date: Mar 2013
Posts: 5,868
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The way the shell gets its strength, mostly from the outer skin, the short ribs will make little to no difference in rigidity...
I would not worry about them if it was my trailer.
__________________
The fact that I am opinionated does not presuppose that I am wrong......
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