Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-20-2005, 08:39 PM   #1
Lanny
 
lwebb's Avatar
 
1954 15' Byam Holiday
1955 15' Byam Holiday
Athens , Georgia
Join Date: Jan 2003
Posts: 127
Images: 15
Send a message via AIM to lwebb Send a message via Yahoo to lwebb
6 volt vs 12 volt brakes?

I have recently purchased another camper. It's either a 54 or 55. The owner says he believes the electric brakes work fine but he hasn't used them in well over twenty years. He knows little about them and that's a bit more than I know.

I assume since they were made in the mid fifties that they are likely 6 volt. Is that correct? If so can my 12 volt feed be reduced to 6 volt somehow.

I haven't seen the connector as of yet. Would the connector possibly fit my current contemporary connector?

Any advice would be greatly appreciated. I have to pick it up on Friday and it's a 16 hour drive away. It's only a 15 footer so I could tow it without them if necessary.
lanny
__________________

__________________
lwebb is offline   Reply With Quote
Old 06-20-2005, 09:14 PM   #2
Moderator dude
 
Action's Avatar

 
1966 26' Overlander
Phoenix , Arizona
Join Date: Apr 2002
Posts: 6,066
Images: 13
Ford was the last car manufacturer to make the voltage change. They went from 6V pos ground to 12V neg ground in 1956. GM made the switch earlier. Not sure about when other manufacturers did that.

If it is a 1954 or 1955 trailer I bet it has 12v brakes. If they have not been used in 2 decades, don't place any bets that they are gonna work now even if you did get the voltage correct.

Also older units may have had a connector like a modern one, however the wiring was frequently not the same. IE different pins were wired differently than today.

Check an exterior light bulb is 6v. If it is everything else is likely to be 6v. As far as the brakes go, I would replace them entirely with loaded backing plates and be done with it.

>>>>>>>>>>>>>>>>>>Action
__________________

__________________
1966 Mercury Park Lane 4 DR Breezeway 410 4V, C-6, 2.80 - Streamless.
1966 Lincoln 4 door Convertible 462 4V 1971 Ford LTD Convertible 429 4V Phoenix ~ Yeah it's hot however it's a dry heat!
Action is offline   Reply With Quote
Old 06-20-2005, 10:22 PM   #3
Site Team
 
, Minnesota
Join Date: Aug 2003
Posts: 6,940
Images: 59
The original set-up on my '59 was 6V brakes and 12V lights. The instructions were to add a variable resistor, if necessary, to reduce the voltage supplied to the brake magnets. This was for the old KH brake controller.

Regardless, the original magnets have the same resistance as the new ones, and if you have a 'modern' brake controller you can likely set the gain so that the brakes work properly, even without the variable resistor.

I have replaced the axle and brakes on my trailer, but the original brakes still worked ok. You need to 'exercize' the shoes and acutator arms if it thas been sitting for a long time. You need to inspect the bearings and seals anyway, so take a look at the brake springs, hold-downs, and shoes at the same time.

It's neither expensive or difficult to replace the whole backing plate assembly if that's required.
__________________
markdoane is offline   Reply With Quote
Old 06-20-2005, 11:16 PM   #4
Moderator dude
 
Action's Avatar

 
1966 26' Overlander
Phoenix , Arizona
Join Date: Apr 2002
Posts: 6,066
Images: 13
Quote:
Originally Posted by markdoane
It's neither expensive or difficult to replace the whole backing plate assembly if that's required.
And if they are older than dirt ----- highly recommended.

>>>>>>>>>>>>>>>>>>Action
__________________
1966 Mercury Park Lane 4 DR Breezeway 410 4V, C-6, 2.80 - Streamless.
1966 Lincoln 4 door Convertible 462 4V 1971 Ford LTD Convertible 429 4V Phoenix ~ Yeah it's hot however it's a dry heat!
Action is offline   Reply With Quote
Old 06-21-2005, 03:09 AM   #5
Retired Moderator
 
john hd's Avatar
 
1992 29' Excella
madison , Wisconsin
Join Date: Aug 2002
Posts: 4,644
Images: 40
most retail trailer parts places sell fully loaded backing plates in the 40 to 60 dollar range.

cheap at twice the price!

john
__________________
you call them ferrets, i call them weasels.
john hd is offline   Reply With Quote
Old 06-21-2005, 06:02 AM   #6
Lanny
 
lwebb's Avatar
 
1954 15' Byam Holiday
1955 15' Byam Holiday
Athens , Georgia
Join Date: Jan 2003
Posts: 127
Images: 15
Send a message via AIM to lwebb Send a message via Yahoo to lwebb
variable control

Thanks everyone, my brake controller has a variable brake intensity control. Sorry I really don't know how these work. Does that mean it is sending more or less voltage to an electro magnet which control the amount of brake applied?
__________________
lwebb is offline   Reply With Quote
Old 06-21-2005, 08:38 AM   #7
Well Preserved

 
1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 20,190
Correct

Quote:
Originally Posted by lwebb
Thanks everyone, my brake controller has a variable brake intensity control. Sorry I really don't know how these work. Does that mean it is sending more or less voltage to an electro magnet which control the amount of brake applied?
Your guess is right on the money. Although, if your brakes haven't been used in 20 years, I would highly recommend replacing them right away, as the epoxy holding the friction material to the base, or table, or the shoe is not designed to last that long, and may allow the friction material (the shoe part) to pop off, and lock up the affected wheel. If that happens, you could be replacing a drum, also.
__________________
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
overlander63 is offline   Reply With Quote
Old 06-21-2005, 10:18 AM   #8
4 Rivet Member
Commercial Member
 
Currently Looking...
Somewhere , Indiana
Join Date: Mar 2005
Posts: 432
Unhappy I agree!

Quote:
Originally Posted by overlander63
as the epoxy holding the friction material to the base, or table, or the shoe is not designed to last that long, and may allow the friction material (the shoe part) to pop off, and lock up the affected wheel. If that happens, you could be replacing a drum, also.
It might just decide to lock-up at the worst possible time (in heavy traffic etc…)



Like my dad used to say (he was talking about cars but I think that it applies) “If you can’t stop it don’t start it”.



Regards,

Henry
__________________
axleman is offline   Reply With Quote
Old 06-21-2005, 01:44 PM   #9
Lanny
 
lwebb's Avatar
 
1954 15' Byam Holiday
1955 15' Byam Holiday
Athens , Georgia
Join Date: Jan 2003
Posts: 127
Images: 15
Send a message via AIM to lwebb Send a message via Yahoo to lwebb
Thanks again all. Since it's only a 15 footer, I will just forgo using them at all. The current owner has had the bearings packed and put on new tires so my return journey, while long, will hopefully be uneventful.
Again, much obliged for the advice.
Lanny
__________________
lwebb is offline   Reply With Quote
Old 06-21-2005, 02:31 PM   #10
Site Team
 
, Minnesota
Join Date: Aug 2003
Posts: 6,940
Images: 59
Lanny,

Have a safe and boring journey!
__________________
markdoane is offline   Reply With Quote
Old 06-21-2005, 06:11 PM   #11
3 Rivet Member
 
Roy B's Avatar
 
Vintage Kin Owner
2005 25' Safari
Vintage Kin Owner
1998 19' "B" Van Airstream 190
Athens , Georgia
Join Date: Mar 2005
Posts: 176
Images: 47
Hey Lanny

Saw your post, can't wait till we hit the road for NY with you, will be a blast to see that camper and get it back here in the hills of Georgia. :-)

Roy
__________________
Roy B is offline   Reply With Quote
Old 07-13-2005, 10:39 AM   #12
New Member
 
Join Date: Jul 2005
Posts: 3
Can someone tell me where I can find a wiring diagram for the trailer coupler. I would like to get the brakes hooked up on a 1972 Sovereign I purchased to use as a utility trailer-it was partially gutted,I finished the job.
__________________
BIGGUNDOCTOR is offline   Reply With Quote
Old 07-13-2005, 11:10 AM   #13
Rivet Master
 
wkerfoot's Avatar
 
1979 23' Safari
1954 29' Liner
Orange , California
Join Date: Feb 2005
Posts: 3,667
Quote:
Originally Posted by lwebb
Thanks again all. Since it's only a 15 footer, I will just forgo using them at all. The current owner has had the bearings packed and put on new tires so my return journey, while long, will hopefully be uneventful.
Again, much obliged for the advice.
Lanny
I missed this thread when it started, I had the same concern with the 1954 Double Door Liner I picked up in Tampa and towed to So Cal. I was planning on replacing the brakes on only one axle, since it was basically gutted and then towing it back, I would have considered no brakes except for the length - 30' and the distance - 2500 miles.

In investigating the brakes, I discovered that the brakes on a 1954 trailer are completely different from the current style and the drum would not fit over the new backing plate and the also the magnet in the drum was completely different.

Solution, replace both axles and springs with brakes on one axle, will replace the drum brakes with discs during reconstruction. Purchased the axles and springs from Henry at Axis, very satisfied.

Bill
__________________
Bill Kerfoot, WBCCI/VAC/CAC/El Camino Real Unit #5223
Just my personal opinion
1973 Dodge W200 PowerWagon, 1977 Lincoln Continental, 2014 Dodge Durango
1979 23' Safari, and 1954 29' Double Door Liner Orange, CA

http://billbethsblog.blogspot.com/
wkerfoot is offline   Reply With Quote
Old 07-13-2005, 12:30 PM   #14
Site Team
 
, Minnesota
Join Date: Aug 2003
Posts: 6,940
Images: 59
Quote:
Originally Posted by BIGGUNDOCTOR
. . . . . 1972 Sovereign I purchased to use as a utility trailer-it was partially gutted,I finished the job.
And you want us to condone this?

Welcome to the Airstream Forums.
__________________

__________________
markdoane is offline   Reply With Quote
Reply

Tags
12 volt


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
Grabbing Brakes 74Tradewind Brakes & Brake Controllers 15 08-05-2004 06:26 PM
problem with Brakes jazzbone Brakes & Brake Controllers 33 08-23-2002 08:05 AM
Disc Brakes? J.Hemingway Brakes & Brake Controllers 2 08-22-2002 08:56 PM
Heeeelp! My brakes have failed...anyone have a similar experience? williamhenshall Airstream Motorhome Forums 9 07-12-2002 04:04 PM
Strange noise?? Univolt?? Brakes?? rroessler General Repair Forum 2 06-22-2002 05:41 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:18 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.