Re:Ford F-150 Lightning Breezes Up Obstacle Where Tesla Cybe...
by SigmundA on Wednesday November 15, 2023 @08:09PM
(#38284689)
A Jeep can have over 100:1 gear ratio in low range with torque converter and transmission and axles, its can put 20,000 to 30,000 lbs/ft to the wheels a quad motor Rivian is a fixed 12.6:1 gear ratio so 11440.8 lbs/ft to the wheels max.
Now have two wheels lose traction and you cut that down to 5720.4 lbs/ft at the wheels while a Jeep with lockers put the full 20k+ torque to any one wheel as needed.
The Rivian can do 908 lb-ft of torque. Like you say, that's divided up amongst the 4 wheels, so that's 227 lb-ft per wheel.
The Jeep can do 260 lb-ft total.
The Rivian weighs ~7200 lbs and the Jeep weighs ~5300 lbs.
So, with only one wheel of traction you're right. If you can transfer all of that torque on the jeep with less than ~14% loss (which, I dunno, might be reasonable) then the Jeep has more "oomph".
With two wheels, the Jeep is still figuring out how to distribute 260 lb-ft and the Rivian has 454. It's not close at that point.