Transfercase power split %? [Archive] - Cherokee SRT8 Forum

: Transfercase power split %?


rainmaker
05-07-2008, 09:53 AM
Hey,

I know I've seen this posted somewhere before, but damned if I can find it now. Anyone know what the power split is between front and rear diffs? If I remember correctly it starts out at like 80%rear 20% front and then goes to 50/50...unless i'm thinking of some other 4wd vehicle... ???

Anyone know for sure?

Thanks

johnny--2k
05-07-2008, 09:56 AM
http://www.wkjeeps.com/wk_srt8_specs.htm

SRT NV146. Active full-time single-speed with variable torque, solid electronically controlled clutch pack in center differential and open front and rear differentials. The NV146 transfer case provides On-Demand Active Four-Wheel Drive for optimum traction in a wide range of conditions. The transfer case uses the electronically controlled clutch pack to distribute between 0% and 50% of the available torque to the front axle. The NV146 electronics provide an active system because it can anticipate and prevent slip.

The NV146 single-speed transfer case provides the following benefits:

* No shift lever or driver interaction required.
* On-demand four-wheel drive provides smooth operation and vehicle stability under all conditions because torque is constantly being transferred.
* Even torque distribution provides traction to maintain forward motion under most conditions.
* The Brake Traction Control System (BTCS) works in tandem with on-demand four-wheel drive. BTCS provides resistance to any wheel that is slipping to allow additional torque transfer to wheels with traction.
* Robust design and improved sealing enhance reliability.

candyman
05-07-2008, 09:57 AM
http://www.wkjeeps.com/wk_srt8_specs.htm#TCASE

rainmaker
05-07-2008, 10:01 AM
http://www.wkjeeps.com/wk_srt8_specs.htm

SRT NV146. Active full-time single-speed with variable torque, solid electronically controlled clutch pack in center differential and open front and rear differentials. The NV146 transfer case provides On-Demand Active Four-Wheel Drive for optimum traction in a wide range of conditions. The transfer case uses the electronically controlled clutch pack to distribute between 0% and 50% of the available torque to the front axle. The NV146 electronics provide an active system because it can anticipate and prevent slip.

The NV146 single-speed transfer case provides the following benefits:

* No shift lever or driver interaction required.
* On-demand four-wheel drive provides smooth operation and vehicle stability under all conditions because torque is constantly being transferred.
* Even torque distribution provides traction to maintain forward motion under most conditions.
* The Brake Traction Control System (BTCS) works in tandem with on-demand four-wheel drive. BTCS provides resistance to any wheel that is slipping to allow additional torque transfer to wheels with traction.
* Robust design and improved sealing enhance reliability.

Thanks Johnny,

I remember reading somewhere the exact power split under normal driving conditions, and then what it splits to under WOT (ie 20front/80rear just crusing, but 50/50 at WOT). It sounds like you never get more than 50% of the power going to the fronts ever...

Anyways, maybe I'm on crack and just remembering this information from a different vehicle....

candyman
05-07-2008, 10:19 AM
Under normal driving conditions, from 5 percent to 10 percent of torque is directed to the front wheels.

rainmaker
05-07-2008, 10:23 AM
Under normal driving conditions, from 5 percent to 10 percent of torque is directed to the front wheels.


Thanks Candyman, do you remember where you saw this?

candyman
05-07-2008, 10:31 AM
http://www.allpar.com/model/jeep/grand-cherokee-srt.html

rainmaker
05-07-2008, 10:45 AM
http://www.allpar.com/model/jeep/grand-cherokee-srt.html

Yes! I knew I wasn't making this up. Thanks for the info/link.

ResumeSpeed
05-07-2008, 01:23 PM
Yes! I knew I wasn't making this up. Thanks for the info/link.
Info is also on the WK site, just in a different place: http://www.wkjeeps.com/wk_srt8_premiere.htm