double cardan at both ends of drive shaft? - 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 > General Technical Discussions > Engines & Drivetrain > double cardan at both ends of drive shaft?

RIGID LED Light Blowout Sale - All Sizes, All Series, all ECGS Black Friday Sale!!6th Annual, Beat Your Wife to the Credit Card Sale!

Reply
Unread 10-15-2007, 08:52 AM   #1
Vacant Stare
Registered User
 
Join Date: May 2004
Location: Seattle, WA
Posts: 582
double cardan at both ends of drive shaft?

I was thinking about the cascade effect of installing an SYE- adjusting the rear pinion angle, which throws the shocks, trackbar, and spring cups off, and wondered why we don't instead use a drive shaft that has a double cardan at each end and leave the rear axle where it is?

just curious.

Vacant Stare is offline   Reply With Quote Quick reply to this message
Unread 10-15-2007, 09:32 AM   #2
RLD831
Registered User
2006 LJ Wrangler 
 
Join Date: Oct 2004
Location: Hollywood, Florida
Posts: 1,539
I dont think two double cardans would work that way. It would be shaped like an " S " if you used the stock angles. They need to be angled in the same direction like an " r " to work in the way you are describing.
__________________
Black 2001 Wrangler SE, stats in profile
RLD831 is offline   Reply With Quote Quick reply to this message
Unread 10-15-2007, 04:03 PM   #3
supraman1990
Registered User
1980 CJ5 
 
Join Date: Feb 2007
Location: Claremont, NC
Posts: 1,366
Tom Woods does it.
__________________
80 CJ5 in the process of a frame up resto
96% complete.
The little stuff will kill me.
On the back burner for college.
supraman1990 is offline   Reply With Quote Quick reply to this message
Unread 10-15-2007, 07:28 PM   #4
mike_dippert
hodophobic
 
mike_dippert's Avatar
2005 LJ Wrangler 
 
Join Date: Jan 2006
Posts: 3,119
i'm curious about this too. my TT and OME lift are getting closer to the top of my list, i don't really want to use adjustable arms for the reasons you listed.
__________________
You can't argue with ignorance.
Quote:
Originally Posted by HurricaneRZA View Post
JF taught me that the 2.5L, Ax-5 and D35 together are so powerful that angels weep when I shift into 4LO.
Quote:
Originally Posted by mrblaine View Post
The only thing a bicycle inner tube is good for, is tying a knot in the end of when you run out of condoms.
mike_dippert is offline   Reply With Quote Quick reply to this message
Unread 10-15-2007, 11:36 PM   #5
Vacant Stare
Registered User
 
Join Date: May 2004
Location: Seattle, WA
Posts: 582
Well I did a little research on this today, and the only reason I can find not to do it is cost. a double cardan joint does add to the cost of a custom driveshaft. I found this little blurb at the Tom Woods site:

"Multiple Double Cardan (CV) drive shafts are built using modified off the shelf components. This configuration will typically add about $180 to the cost of a more conventional CV and may require using a custom adapter flange."

So it sounds like you'd need a pinion flange for the rear axle to replace the yoke. I found one for Dana 44's for $99.

The only other possible drawback I can see is that having the pinion point forward instead of angling up toward the t-case might make it more likely to snag on things.

It's probably 'overkill' for a mild lift, but I do like the idea of avoiding all the annoyances that come with changing the pinion angle.
Vacant Stare is offline   Reply With Quote Quick reply to this message
Unread 10-16-2007, 10:48 AM   #6
Vacant Stare
Registered User
 
Join Date: May 2004
Location: Seattle, WA
Posts: 582
I called Tom Woods this morning to get their take on this. They brought up a few things I hadn't thought of.

Double cardan joints are longer than u-joints. On a SWB jeep, there just isn't enough driveshaft length to stuff 2 in there.

Double cardan joints are heavier than u-joints. You could end up with a drive shaft that's so heavy it's hard to balance. Not good for freeway driving.

There is a double cardan pinion yoke for Dana 44's though, so the flange wouldn't be necessary.

It's always good to talk to the experts.

Last edited by Vacant Stare; 10-16-2007 at 11:05 AM..
Vacant Stare 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.