Reply
 
Thread Tools Search this Thread Display Modes
 
Old 03-31-2004, 01:31 PM   #1
Patriotic
 
Chuck's Avatar

 
1973 23' Safari
North of Boston , Massachusetts
Join Date: May 2002
Posts: 4,533
Images: 260
Why do you suppose they made them....

I've been perusing some diagrams of how the tanks and drain systems worked in the early 70's trailers, and noticed something interesting. The fresh water tank is held in place by angle iron bolted to the frame, that supports a 1" piece of plywood, upon which sits the tank. seems to work ok...

The grey and black tanks, however, sit inside a gavlaized metal pan, which is in turn, supported by similar looking angle iron bolted to the frame. Why a galvanized pan in the back, and only plywood in the front?

anyone? Beuller?
__________________

__________________
Chuck is offline   Reply With Quote
Old 03-31-2004, 01:57 PM   #2
uwe
418
 
uwe's Avatar
 
2007 25' Safari FB SE
1958 22' Flying Cloud
1974 29' Ambassador
Yucca Valley , California
Join Date: Jun 2002
Location: 1963 26' Overlander
Posts: 4,767
Images: 41
Send a message via Skype™ to uwe
Chuck,
My tradewind has a galvanized pan under the plywood that holds the fresh tank, and the black tank sits on top of the plywood that also makes the bathroom floor. My grey tank is held in with 3 metal straps, but that's a retrofit, of course.
I think it varies widely by floor plan, and size, as well as year. i have looked at 1973 Tradewinds that were completely different from mine.
__________________

__________________
Uwe
www.area63productions.com
uwe is offline   Reply With Quote
Old 03-31-2004, 02:11 PM   #3
Patriotic
 
Chuck's Avatar

 
1973 23' Safari
North of Boston , Massachusetts
Join Date: May 2002
Posts: 4,533
Images: 260
yes, well I was referring to frame-mounted tanks only. My black tank sits on top of the floor, too...but looking at the service manual for 1973 shows that there were some models that had frame-mounted black tanks. the fresh tanks were all the same, according to the manual, and there is no indication of a galvanized pan for that particular tank...only one drawing that applied to all models. so what's the purpose of the galvanized pan?
__________________
Chuck is offline   Reply With Quote
Old 03-31-2004, 02:19 PM   #4
uwe
418
 
uwe's Avatar
 
2007 25' Safari FB SE
1958 22' Flying Cloud
1974 29' Ambassador
Yucca Valley , California
Join Date: Jun 2002
Location: 1963 26' Overlander
Posts: 4,767
Images: 41
Send a message via Skype™ to uwe
I suppose since it is low and in the splashzone of the tires, that it would protect the wooden sheet from water, and perhaps from critters attacking the wood.
__________________
Uwe
www.area63productions.com
uwe is offline   Reply With Quote
Old 03-31-2004, 02:31 PM   #5
Patriotic
 
Chuck's Avatar

 
1973 23' Safari
North of Boston , Massachusetts
Join Date: May 2002
Posts: 4,533
Images: 260
Lightbulb

I just thought of something else, too (hey, its a "process" )

in the back end of most of these trailers, there are frame extensions...3 inch plates that are welded on to the frame rails, making the enclosed space 7" deep, instead of 4. If the angle-iron supports attach at the bottom of those plates, they could support a single sheet of plywood, like the freshwater tank up front...but then there'd be a 3 inch gap in the middle, where the tanks would be open to the elements along the forward and aft sides. (because the cross members that form the cavities are still only 3 or 4" tall, like the main frame rails). The walls of the galvanized pan close up that "gap".

the fresh tank doesn't need this, because the bottom of it is at the same level as the bottom edge of the frame/bellypan. the angle iron hangs down 1"...but the 1" thick plywood "floor" fills in that space. with the angle iron around all 4 edges, everything is closed up.
__________________
Chuck is offline   Reply With Quote
Old 03-31-2004, 03:05 PM   #6
uwe
418
 
uwe's Avatar
 
2007 25' Safari FB SE
1958 22' Flying Cloud
1974 29' Ambassador
Yucca Valley , California
Join Date: Jun 2002
Location: 1963 26' Overlander
Posts: 4,767
Images: 41
Send a message via Skype™ to uwe
Good thinking!
__________________
Uwe
www.area63productions.com
uwe is offline   Reply With Quote
Old 03-31-2004, 04:47 PM   #7
Rivet Master
 
53flyingcloud's Avatar
 
1984 29' Sovereign
Savannah , Missouri
Join Date: Apr 2002
Posts: 3,458
Images: 17
Blog Entries: 1
Quote:
Originally Posted by chuck
The grey and black tanks, however, sit inside a gavlaized metal pan, which is in turn, supported by similar looking angle iron bolted to the frame. Why a galvanized pan in the back, and only plywood in the front?
anyone? Beuller?
(galvanized)

Maybe it was designed as a safeguard;To contain and/or, prevent damages to those tanks that we all don't want leaking? Yuck~

ciao
53FC
__________________

__________________
WBCCI 5292 AIR 807
NEU #64
New England Unit
53flyingcloud 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
I have made many electrical changes FrankR Electrical - Systems, Generators, Batteries & Solar 4 10-03-2008 09:53 AM
Who made my axle? Pahaska Axles 44 07-25-2007 11:08 AM
Made a visit to the new AR dealer FlynG Our Community 26 08-13-2003 07:28 AM
Number of Airstreams made APB On The Road... 4 04-13-2003 12:54 AM
Where to get new cushions made? Andy R Upholstery, Blinds, Walls & Interior Finishes 8 04-16-2002 02:32 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:23 AM.


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.