Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-01-2014, 11:17 AM   #15
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,403
Images: 5
Mod did it and explained it in the other thread.
__________________

__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is online now   Reply With Quote
Old 12-01-2014, 12:56 PM   #16
Rivet Master
 
KJRitchie's Avatar

 
2008 25' Classic
Wichita Falls , Texas
Join Date: Nov 2012
Posts: 4,217
Is it difficult to bleed the brakes on an Airstream with disc hydraulic brakes. Maybe I need to do this as I have some delay.

Do you just get someone to move the manual brake lever on the brake controller to get the pump to apply pressure then open the bleed valve on each wheel? Top off the pump reservoir after each wheel is bled?

Kelvin
__________________

__________________
KJRitchie is online now   Reply With Quote
Old 12-01-2014, 01:11 PM   #17
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,403
Images: 5
Kelvin, if you still have the original actibrake, just pull the breakaway switch pin. Pump will only run 20 seconds with pressure on the system, then shut off. Open the bleeder, pump turns on, purge air, close bleeder, pump turns off. No helper needed.

HOWEVER, getting the air out of the inner caliper half is a challenge. I crack the line fitting, but am never confident I am getting all the air out of the inner half.
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is online now   Reply With Quote
Old 12-01-2014, 01:12 PM   #18
Rivet Master
 
SteveH's Avatar
 
2005 39' Land Yacht 390 XL 396
Common Sense , Texas
Join Date: Sep 2007
Posts: 5,311
There are several different types of hydraulic brake calipers, and electric actuators available. The biggest difference is the single piston vs. four piston calipers. The four piston calipers are almost impossible to properly bleed, IMHO. That is because each caliper has two resevoirs, but only one has a bleed valve. SO, DEXTER, HOW DO YOU GET ALL THE AIR OUT OF THE OTHER RESEVOIR?

They say to bleed them "fast", whatever that means, but I've tried bleeding them as "fast" as the actuator will go, but still have unacceptable delay. Actually tried self-developed methods that work better.

Our 34' has the four piston calipers, and came equipped with the Actibrake actuator (no longer built, and that's a good thing because most all of them eventually fail, as did ours). We now have a Dexter Actuator, and the last time I hooked up the trailer about a week about just to move it so I could do some lot maintenance, the Dexter also failed in the on condition and would not shut off. Even after bleeding this system three different times, it still has what I consider unacceptable delay, and Dexter says about a one second delay is the best they can do. One second is a long time traveling down the road a 65MPH when some fool pulls out in front of you.

Having towed trailers since the early 70's with electric brakes, I never had one fail, and we've owned this trailer about 13 months and all I've had is trouble with the hydraulic brakes. After you can get them to come on, and you stand on them, they STOP. But, wish I had electrics. YMMV.
__________________
Regards,
Steve
SteveH is offline   Reply With Quote
Old 12-01-2014, 02:17 PM   #19
Rivet Master
 
KJRitchie's Avatar

 
2008 25' Classic
Wichita Falls , Texas
Join Date: Nov 2012
Posts: 4,217
That sounds like the same experience I'm having about a 1 second delay. I have the Dexter actuator vs the Actibrake. I also have what looks like a trailer brake magnet in parallel in the electrical wiring to the Dexter actuator (one wire splices into the wire to the Dexter and the other magnet wire is screwed into a ground). My Prodigy P2 is set to electric over hydraulic but with the magnet connected maybe it's confusing things however I remember when I first got the trailer it was set on electric brakes and after changing it I thought the brakes worked better. I have to set the P2 gain very low, around 1.4 otherwise the trailer brakes will be too aggressive.

It sounds like my brakes don't need to be bled since the Dexter was installed March 2013 and the trailer hasn't been heavily used. Brake pads have plenty left.

Thanks

Kelvin
__________________
KJRitchie is online now   Reply With Quote
Old 12-01-2014, 02:35 PM   #20
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,403
Images: 5
Yeah, Steve, a bleeder in the inboard caliper is the fix for most of our woes relative to bleeding. I have found the only way to "easily" bleed the inner half is to loosen the supply line so it leaks very slowly....somewhere between a weep and a leak and watch until no bubbles come out. Then proceed to the normal bleeding method for the outer half. I'm still not sure you get all the air that way.

There is another way, but it would take 2 people, maybe a fabbed fixture, and some acrobatic dexterity. I hesitate to post it, as I haven't tried it and it could pose some risk of injury unless you are very familiar with potential ramifications of high pressure while the caliper is removed from the hub and disc.
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is online now   Reply With Quote
Old 12-01-2014, 02:39 PM   #21
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,403
Images: 5
kelvin, I wouldn't count on the installers of your new actuator bleeding properly. They surely introduced air in the line at the actuator. Assuming they bled the system well after that, unless they fully understand the caliper setup, most of the air they introduced is now captive in your inner caliper half.
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is online now   Reply With Quote
Old 12-01-2014, 02:58 PM   #22
Don't forget your cat nap
 
Ag&Au's Avatar
 
Port Orchard , Washington
Join Date: May 2009
Posts: 4,464
Images: 1
First of all, I have many years experience using electric trailer brakes and zero experience using electric over hydraulic trailer brakes. However after reading about all the minor annoyances people report with electric/hydraulic brakes I would not consider "upgrading". I have never had a brake problem with electric brakes that would not have also been a problem with E/H brakes. In other words they have all been in the wiring that would be prior to the actuator in an E/H system. I have never felt a need for any more additional stopping power in any electric brake trailer with the wiring intact to the trailer. The only annoying problem I have had in the Airstream was an improperly (at the factory) tightened (as in not) nut on the post where the umbilical cord ties into the trailer wiring.

Anyway, my point is: I would not recommend the change if you are not experiencing any braking problems, or have some problems, but have not thoroughly checked the controller and its settings and also the wiring and connections thoroughly.

Yes, properly working and adjusted disk brakes work better, but do you need better than you currently have?

Ken
__________________
Ag&Au is offline   Reply With Quote
Old 12-01-2014, 03:03 PM   #23
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,403
Images: 5
Ken, the comparison is like comparing an old car with 4 wheel drum brakes to the next gen cars (60s) that had front discs. Drums stopped the car. Discs stopped the car more predictably and in a shorter distance...and just "feel" better. I've had both electric and E/H brakes on trailers and E/H are superior performers.

Both kinds have their issues, just different issues and different solutions and differing complexity to solutions. Discs are worth it for me.
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is online now   Reply With Quote
Old 12-01-2014, 03:09 PM   #24
Don't forget your cat nap
 
Ag&Au's Avatar
 
Port Orchard , Washington
Join Date: May 2009
Posts: 4,464
Images: 1
Quote:
Originally Posted by dznf0g View Post
Ken, the comparison is like comparing an old car with 4 wheel drum brakes to the next gen cars (60s) that had front discs. Drums stopped the car. Discs stopped the car more predictably and in a shorter distance...and just "feel" better. I've had both electric and E/H brakes on trailers and E/H are superior performers.

Both kinds have their issues, just different issues and different solutions and differing complexity to solutions. Discs are worth it for me.
I will not say that I would not say the same thing if I tried it, but I learned a long time ago to not fix problems I don't know I have.

(Unless it involves some toys I want to buy and need an excuse)

Ken
__________________
Ag&Au is offline   Reply With Quote
Old 12-01-2014, 03:12 PM   #25
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,403
Images: 5
Ken, we're on the same page, but I had maintenance/repair issues on my old trailer I don't and won't have with discs as well. It's a trade off, but the performance difference is noticeable.
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is online now   Reply With Quote
Old 12-01-2014, 03:21 PM   #26
Rivet Master
 
SteveH's Avatar
 
2005 39' Land Yacht 390 XL 396
Common Sense , Texas
Join Date: Sep 2007
Posts: 5,311
Have a friend in our unit with a 2000 34', which has E/H discs (probably some of the first ones), and they are single piston calipers. He has had only one issue with his brakes in all these years, and that was a leaking line. He reports no delay. Not sure how you can measure or state NO delay, but anyway I think the four piston calipers are a POS for our purposes. We don't need Corvette, race track type braking performance, we just need the damn things to work, and work every time we step on the pedal, when we step on the pedal.

We towed home last July from Idaho with no trailer brakes after the Actibrake failed, and here I am waiting for a replacement Dexter actuator to get here. Hope the next one has more than a five month life span.
__________________
Regards,
Steve
SteveH is offline   Reply With Quote
Old 12-01-2014, 03:25 PM   #27
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,403
Images: 5
Steve, was it a warranty replacement? I think if/when my Actibrake goes, I am going to get the Tuson to go with my Direclink....I think you went Direclink too, IIRC? BTW, I need to start a new thread on the GREAT interaction I had with Tuson's engineer.

Maybe, I'm just fortunate, but my system has worked predictably and reliably for 7 years (I've had for 4 years). Still has original Actibrake, I've had no "short" brake hose issues and no controller issues (other than when I picked up the AS and had no idea that my circa 1994 Kelsey Hayes controller wouldn't work with E/H). I know I just jinxed myself, but mechanically I can't complain. All I've done is flushed and replaced the brake fluid, and worked out an unnecessarily complex bleeding procedure. I also tested two iterations of Dexter's anti-rattle clip prototypes, which I now understand come on their axle assemblies.
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is online now   Reply With Quote
Old 12-01-2014, 03:32 PM   #28
Rivet Master
 
SteveH's Avatar
 
2005 39' Land Yacht 390 XL 396
Common Sense , Texas
Join Date: Sep 2007
Posts: 5,311
No, I have the P3.
__________________

__________________
Regards,
Steve
SteveH 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
Disc brake parts, pads and calipers Excella CM Brakes & Brake Controllers 31 04-16-2011 09:37 PM
Disc Brake owners Inland RV Center, In Brakes & Brake Controllers 40 03-16-2005 06:29 PM
Disc brake Retro fit kits Inland RV Center, In Commercial Listings 57 01-29-2005 11:17 AM
Disc Brake kits Inland RV Center, In Commercial Listings 0 11-01-2004 06:44 PM
Tandem disc brake kit Inland RV Center, In Commercial Listings 2 10-31-2004 12:25 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:26 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.