Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-22-2014, 01:36 PM   #15
Rivet Master
 
HowieE's Avatar
 
1991 34' Excella
Princeton , New Jersey
Join Date: Aug 2003
Posts: 6,814
Images: 12
Let's look at this. If it were the brake lights and you are drawing 12 amps, 4 magnets at full power, plus the brake lights you would blow the brake light fuse.

Intermittent electrical problems are the hardest to figure out but logic can be applied and many things eliminated. Look to the things that can carry that amount of current and not fail themselves.
__________________

__________________
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles

HowieE is offline   Reply With Quote
Old 05-22-2014, 07:40 PM   #16
3 Rivet Member

 
1964 24' Tradewind
Lawrence , Kansas
Join Date: Oct 2012
Posts: 201
I am really not much of a meter guy but I most likely can check the voltage next time it happens.

It is possible that I nocked the controller to a less level position but it has a lever on the side and it is straight up and down as per instructions.

When the grabbing is not happening every thing works perfectly. The problem has been there about for about 1 1/2 hours total in 8000 miles of towing. While it has always happened at the start of a towing period the interval between the end and start of a towing period have been a matter of hours to up to 3 months. My approach has always been to play with the 7 pin and the controller until it goes away but I have never identified anything I did that made it stop which it always has sooner or later.

I think Howie might be on the right track but I would of thought a controller would either work or not work.
__________________

__________________
ttbikes is offline   Reply With Quote
Old 05-22-2014, 07:50 PM   #17
Rivet Master
 
HowieE's Avatar
 
1991 34' Excella
Princeton , New Jersey
Join Date: Aug 2003
Posts: 6,814
Images: 12
Voltage. The controller output is measured in amps.

What you can measure is the voltage input to the controller. The battery voltage right after starting is low. It takes about 20 miles on the road to bring a battery to full charge.

On my diesel the glow plugs remain on for over minute after starting and the battery voltage is well below 11 volts. If there is a component in the controller that is susceptible to low voltage that may be it.
__________________
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles

HowieE is offline   Reply With Quote
Old 05-22-2014, 08:07 PM   #18
Rivet Master
 
Condoluminum's Avatar
 
1988 25' Excella
Sunnyvale , California
Join Date: Jul 2003
Posts: 1,858
Images: 13
Send a message via AIM to Condoluminum
The little trim adjusting lever on the side of the controller has a lot to do with grabbiness if it is occurring when you apply the brakes.. If it is pointing towards front of vehicle from perfectly vertical, it will lead to brakes grabbing.. If it is pointing instead towards rear of vehicle, it will feel like brakes are slow to take effect.. I'd try test drive and move lever towards rear and see if that cures grabbing brakes.. You can then adjust back towards forward until they feel correct.. No meter needed!
__________________
Condoluminum

In Theory, there's no difference between Theory and Practice, but in Practice, there is usually a difference...
Condoluminum is offline   Reply With Quote
Old 06-11-2014, 08:43 AM   #19
3 Rivet Member

 
1964 24' Tradewind
Lawrence , Kansas
Join Date: Oct 2012
Posts: 201
So I believe I may have fixed the problem and if I am correct it makes me feel a little dumb. My controller (Hayes Energizer III) has a operating range for level (-35 degrees to 90). The controller was knocked off level close to the limit but not over it. I had checked the lever on the side for the correct position and every thing operated normally under normal conditions. However, on steep downhill grades the controller was outside the level operating range just enough to cause the brakes to grab. By far the biggest problem I had was in the Ozarks, but because it was so infrequent, it had me assuming a short. In addition, the first time it happened was starting out on a flat road. I now believe I fixed it the first time by adjusting the lever which made it operational under most conditions. I took the trailer back to the Ozarks this week-end and had no problems. I still may be whistling in the dark, but I hope not. Does this sound possible to you all?
__________________
ttbikes is offline   Reply With Quote
Old 06-11-2014, 10:58 AM   #20
Rivet Master
 
r carl's Avatar
 
Vintage Kin Owner
Lin , Ne
Join Date: Dec 2009
Posts: 2,057
Quote:
Originally Posted by ttbikes View Post
So I believe I may have fixed the problem and if I am correct it makes me feel a little dumb. My controller (Hayes Energizer III) has a operating range for level (-35 degrees to 90). The controller was knocked off level close to the limit but not over it. I had checked the lever on the side for the correct position and every thing operated normally under normal conditions. However, on steep downhill grades the controller was outside the level operating range just enough to cause the brakes to grab. By far the biggest problem I had was in the Ozarks, but because it was so infrequent, it had me assuming a short. In addition, the first time it happened was starting out on a flat road. I now believe I fixed it the first time by adjusting the lever which made it operational under most conditions. I took the trailer back to the Ozarks this week-end and had no problems. I still may be whistling in the dark, but I hope not. Does this sound possible to you all?
Yes, something was powering your brakes once in awhile.
__________________
The higher your expectations the fewer your options.
r carl is offline   Reply With Quote
Old 06-13-2014, 01:06 AM   #21
3 Rivet Member
 
Pileus's Avatar
 
1985 31' Excella
Seguin , Texas
Join Date: Nov 2011
Posts: 113
Images: 9
Yes,
The brake controller itself is sensitive to the angle it is mounted (tilt). If it is tilted up the brakes will grab.
__________________

__________________
Pileus 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
One out of four grabbing? Chatthayer Brakes & Brake Controllers 7 11-07-2012 07:24 AM
Brakes Grabbing and Noisy Ag'71 Brakes & Brake Controllers 2 09-18-2010 08:56 AM
BRAKES, BRAKES and more BRAKES Inland RV Center, In Commercial Listings 7 11-17-2009 06:56 PM
Grabbing Brakes 74Tradewind Brakes & Brake Controllers 15 08-05-2004 06:26 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:06 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.