Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-10-2016, 10:25 AM   #1
1 Rivet Member
 
Gdickison's Avatar
 
1969 31' Sovereign
Orangeville , Ontario
Join Date: Jun 2014
Posts: 17
What is this?

A friend of mine has just purchased a 1976 Land yacht Sovereign with the rear twin bed and curb side bath. Under his kitchen sink is a water pump which draws from his under-floor fresh water tank. At the front of the trailer is a silver painter box which contains ancient looking brass plumbing fixtures which connects to a grey hose into the front of the trailer behind the gaucho at which point it meets what appears to be another pump. This pump is not connected to anything. What is this set up used for, is it necessary, original or aftermarket??? Any thoughts would be appreciated.Click image for larger version

Name:	ImageUploadedByAirstream Forums1468164286.859402.jpg
Views:	94
Size:	69.3 KB
ID:	266369Click image for larger version

Name:	ImageUploadedByAirstream Forums1468164315.511105.jpg
Views:	100
Size:	66.7 KB
ID:	266370
__________________

__________________
Gdickison is offline   Reply With Quote
Old 07-10-2016, 11:01 AM   #2
Rivet Master
 
Lumatic's Avatar

 
1971 25' Tradewind
1993 34' Excella
Currently Looking...
Estancia , New Mexico
Join Date: Feb 2005
Posts: 6,642
Images: 16
Blog Entries: 1
I have 2 guesses:
1. Optional or aftermarket hydraulic brake unit.
2. Although I have never seen one, in the early 70s there was an option called a "Porto San" which (not PC today) pumped the black tank into the tow vehicle engine exhaust manifold as you drove down the road.
__________________

__________________
Sail on silver girl. Sail on by. Your time has come to shine.
Lumatic is offline   Reply With Quote
Old 07-10-2016, 11:30 AM   #3
Overland Adventurer
 
AtomicNo13's Avatar
 
1991 34' Excella
2009 34' Panamerica
Telluride , Colorado
Join Date: May 2012
Posts: 1,885
Does that add any additional horsepower as did Buick and Oldsmobiles "rocket fuel" did?
yuck!
__________________
AtomicNo13 is offline   Reply With Quote
Old 07-10-2016, 01:08 PM   #4
2 Rivet Member
 
Trnpk Crsr's Avatar
 
Currently Looking...
Baltimore , Maryland
Join Date: May 2016
Posts: 96
I'd go with the Porto San. The 70's disc brake option had a vaccum booster and a master cylinder just like the one that cars and trucks use.
__________________
Trnpk Crsr is offline   Reply With Quote
Old 07-11-2016, 12:10 PM   #5
1 Rivet Member
 
Gdickison's Avatar
 
1969 31' Sovereign
Orangeville , Ontario
Join Date: Jun 2014
Posts: 17
Thanks all! I'll pass your suggestions along! My 1969 AS doesn't have one, and I didn't know anything like that existed. Much appreciated.
__________________
Gdickison is offline   Reply With Quote
Old 07-11-2016, 01:28 PM   #6
Rivet Master
 
1977 31' Sovereign
1963 26' Overlander
1989 34' Excella
Johnsburg , Illinois
Join Date: Jul 2005
Posts: 2,941
That is a vacuum assisted hydraulic disc brake activator. I had one in my 1977 Sovereign. You had to hook a vacuum line up from your truck or car to operate it. The disc brake calipers on my trailer failed and I replaced them with std. electrical brakes. I discarded the activator system. I was a pain to maintain. Very few dealers knew how to fix it and finding parts was impossible.
__________________
dwightdi is offline   Reply With Quote
Old 07-11-2016, 02:22 PM   #7
Rivet Master
 
Hittenstiehl's Avatar

 
1965 24' Tradewind
1962 28' Ambassador
1961 19' Globetrotter
Mesa , Arizona
Join Date: Jun 2013
Posts: 3,042
Images: 9
That's pretty good, only four responders in and you got your answer.

There is such a wealth of information here.
__________________

Hittenstiehl
Hittenstiehl is offline   Reply With Quote
Old 07-11-2016, 02:31 PM   #8
Rivet Master
 
2014 20' Flying Cloud
Long Island , New York
Join Date: Jun 2015
Posts: 6,363
I almost bought a used AS in the early 90's that had a vacuum assist braking system. The tubing at the tow vehicle's carburetor/manifold area was interesting.

Out of curiosity, would it even be possible to rig up such a system to today's computerized engines?

Yes, an amazing wealth of knowledge here indeed . . .

__________________
OTRA15 is offline   Reply With Quote
Old 07-11-2016, 03:37 PM   #9
Rivet Master
 
1977 31' Sovereign
1963 26' Overlander
1989 34' Excella
Johnsburg , Illinois
Join Date: Jul 2005
Posts: 2,941
New assisted brake systems are electric over hydraulic, using an electric motor to run the hydraulic pump. The old system worked of manifold vacuum and needed a reservoir tank in the trailer, so it would work when manifold vacuum was not present at the moment. When it worked, it worked well, but I got stuck on the road with it too often and when the caliper weldments failed no parts were available.
__________________

__________________
dwightdi 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



Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:21 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.