OEM E-Disco (Smartbar) Study - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > JK Wrangler Technical Forum > OEM E-Disco (Smartbar) Study

Spartan Locker Promo Running now @ ROCKRIDGE 4WD plus FREEG2 Disc Brake Conversion Kit for Jeep Wrangler YJ TJ LJ ChTJ Wrangler 4" Rough Country Suspension Lift Kits in

Reply
Unread 12-01-2010, 10:56 PM   #1
ronjenx
Web Wheeler
 
ronjenx's Avatar
2008 JK Wrangler 
 
Join Date: Jan 2009
Location: Maine
Posts: 3,968
OEM E-Disco (Smartbar) Study

I have been wondering how the Smartbar works, and if it can be successfully disassemble, serviced, and reassembled.

The Smartbar is made by American Axle & Manufacturing.

Mechanically it is pretty simple. It's the computer control and the circuit board that will most likely cause problems. I was hoping to see a way to make it manually operated.

















Here is a picture of the electrical connector. I don't know if anyone has wired in a bypass switch (like the lockers), but it looks like the computer control is too involved.




ronjenx is offline   Reply With Quote Quick reply to this message
Unread 12-02-2010, 01:32 AM   #2
Imped
Web Wheeler
 
Imped's Avatar
2004 TJ Wrangler 
 
Join Date: Feb 2008
Location: Indianapolis
Posts: 19,673
Eh. I'd ditch that silly contraption that's not doing you any good when disconnected and get a Currie AR. Nice job on the analysis, though.
__________________
OlllllllO
Float Test Build
IndyORV
Imped is offline   Reply With Quote Quick reply to this message
Unread 12-02-2010, 03:40 AM   #3
1222
Make mine a Jeep!
 
1222's Avatar
2012 JK Wrangler 
 
Join Date: Jul 2007
Location: Henderson, Nevada
Posts: 11,966
Wow, very impressive ronjenx. Do you just happen to have one lying around or does it belong on your Jeep?
I always wondered how it worked. Great write-up.





Imped, curious why you say its not doing you any good when disconnected. It makes a big difference on my Jeep. It has also been around for several years now with lots of satisfied people. Is it possibly that you have TJ (Iíve had a couple of TJís and like them allot) which of course doesnít have one? I donít need a lesson on how the Currie product works, Iím well aware of that. I also know itís a great product too.

Now just suppose for fun that you had a JK with the Smartbar, would you actually remove it and install a Currie one instead? I think I already know what your answer will be but still go ahead with it.
1222 is online now   Reply With Quote Quick reply to this message
Unread 12-02-2010, 10:05 AM   #4
Imped
Web Wheeler
 
Imped's Avatar
2004 TJ Wrangler 
 
Join Date: Feb 2008
Location: Indianapolis
Posts: 19,673
If you know how the Currie works (just a torsion bar), then you should understand why being totally disconnected in the front is putting you at a disadvantage. In that situation, your rear sway bar is the only member influencing the behavior of the frame relative to the axles, which causes natural instability. Having a similar member acting on the front of the frame in an equal but opposite manner cancels out that instability, keeping the frame/body neutral relative to the axles. Steep climbs, ruts and off-camber situations are also made much more comfortable due to the extra influence and control. I think it's obvious, but regardless of JK or TJ or 3, 4, or 5 links, link suspensions benefit from having a front and rear sway bar. If I were to purchase a JK Rubi, the FIRST thing I would do is remove and sell the e-sway bar system, purchase a Currie AR, and pocket the rest. Then would come the housing beef, gears, and 37's.
__________________
OlllllllO
Float Test Build
IndyORV
Imped is offline   Reply With Quote Quick reply to this message
Unread 12-02-2010, 10:12 AM   #5
jstrubberg
Registered User
2009 JK Wrangler 
 
Join Date: Jul 2010
Location: Missouri
Posts: 2,124
Have their been problems with the electronics on the disco's?


You know what they say about the interest rate on borrowed trouble.
jstrubberg is offline   Reply With Quote Quick reply to this message
Unread 12-02-2010, 11:28 AM   #6
thejdj
Registered User
2013 JK Wrangler 
 
Join Date: Apr 2003
Location: San Diego, CA
Posts: 40
Great pics and nice info. Thanks for sharing.
__________________
<sold> 2005 WK 5.7L Limited
<sold> 2001 TJ Sport
<sold> 2000 WJ Laredo
<sold> 1997 TJ Sport
thejdj is offline   Reply With Quote Quick reply to this message
Unread 12-02-2010, 11:28 AM   #7
krutj
Registered User
2009 JK Wrangler 
 
Join Date: Oct 2009
Location: NW Pennsylvania
Posts: 1,330
Great write up ronjenx.....

I'm also curious about your supply of parts to disassemble..

All of your studies have been very informative and detailed, thanks....
__________________
-- [FONT="Comic Sans MS"][SIZE="4"]Joel[/SIZE][/FONT] --
krutj is offline   Reply With Quote Quick reply to this message
Unread 12-02-2010, 11:37 AM   #8
ncb
Registered User
 
Join Date: Mar 2009
Location: Your mom's house, Colorado
Posts: 4,710
Great write up as always. Reminds me of airframe and powerplant tech classes.
ncb is offline   Reply With Quote Quick reply to this message
Unread 12-02-2010, 11:47 AM   #9
Washi
Rockbiter
 
Washi's Avatar
2009 JK Wrangler 
 
Join Date: Aug 2008
Location: Derby, Kansas
Posts: 1,820
Quote:
Originally Posted by ncb View Post
Great write up as always. Reminds me of airframe and powerplant tech classes.
Who did you get your A&P through?
Washi is offline   Reply With Quote Quick reply to this message
Unread 12-02-2010, 02:20 PM   #10
Vin
Registered User
2012 JK Wrangler 
 
Join Date: May 2010
Location: Long Island, New York
Posts: 3,472
Quote:
Originally Posted by Imped View Post
If you know how the Currie works (just a torsion bar), then you should understand why being totally disconnected in the front is putting you at a disadvantage. In that situation, your rear sway bar is the only member influencing the behavior of the frame relative to the axles, which causes natural instability. Having a similar member acting on the front of the frame in an equal but opposite manner cancels out that instability, keeping the frame/body neutral relative to the axles. Steep climbs, ruts and off-camber situations are also made much more comfortable due to the extra influence and control. I think it's obvious, but regardless of JK or TJ or 3, 4, or 5 links, link suspensions benefit from having a front and rear sway bar. If I were to purchase a JK Rubi, the FIRST thing I would do is remove and sell the e-sway bar system, purchase a Currie AR, and pocket the rest. Then would come the housing beef, gears, and 37's.
I was contemplating this, BUT would this effect the ESP? Now the computer think there is no sway bar connected. It sucks having 5 computers running your rig.
Vin is offline   Reply With Quote Quick reply to this message
Unread 12-02-2010, 02:28 PM   #11
1AAdam
Registered User
2000 WJ 
 
Join Date: Jun 2010
Location: Massachusetts
Posts: 1,572
great write up! i was suspect of it at first but i feel this system will work fine now! i am sure it can be made manually operated but the ESP may freak out. i don't know if they talk to each other though. i hope not!
__________________
Adam
1aauto.com
888-844-3393
1AAdam is offline   Reply With Quote Quick reply to this message
Unread 12-02-2010, 02:39 PM   #12
JLC08JK
What was I thinking?
 
JLC08JK's Avatar
2008 JK Wrangler 
 
Join Date: Sep 2009
Location: Los Angeles, California
Posts: 5,826
Added to the F.A.Q.
Thanks again Ron
JLC08JK is offline   Reply With Quote Quick reply to this message
Unread 12-02-2010, 05:14 PM   #13
ncb
Registered User
 
Join Date: Mar 2009
Location: Your mom's house, Colorado
Posts: 4,710
Quote:
Originally Posted by Washi View Post
Who did you get your A&P through?
South Western in Michigan. Small school in the middle of nowhere. They were a diamond in the rough. They since shut down the AMT program from small class sizes.
ncb is offline   Reply With Quote Quick reply to this message
Unread 12-02-2010, 05:19 PM   #14
Imped
Web Wheeler
 
Imped's Avatar
2004 TJ Wrangler 
 
Join Date: Feb 2008
Location: Indianapolis
Posts: 19,673
Quote:
Originally Posted by Vin View Post
I was contemplating this, BUT would this effect the ESP? Now the computer think there is no sway bar connected. It sucks having 5 computers running your rig.
No clue but if so, that SUCKS. Computers FTL.
__________________
OlllllllO
Float Test Build
IndyORV
Imped is offline   Reply With Quote Quick reply to this message
Unread 12-02-2010, 05:34 PM   #15
JLC08JK
What was I thinking?
 
JLC08JK's Avatar
2008 JK Wrangler 
 
Join Date: Sep 2009
Location: Los Angeles, California
Posts: 5,826
It looks like the default position is with the sway-bar fully connected.
Therefore the computer is told when the bar is disconnected and will not receive a signal otherwise.
Thats my guess!
JLC08JK is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.