Originally Posted by sebastian
even the rear track bar?
what keeps the axles in place then?
These amazing pieces of metal called "Leaf Springs". The leafs are MORE than adequate enough to locate the axle in position perfectly fine on their own. The track bar only causes the flex to bind. Here's why:
Coil sprung vehicles MANDATE the need for a track bar, because the coils can flex in every direction possible, side to side, front to back, diagonal, etc, so the use of track bars is required to keep the axle from moving side to side as well as from moving forwards and backwards. The coils won't bind up because they can bend in any direction.
Leaf springs however can only flex up and town, as well as twist a little bit, but they can't actually move side to side very well (not like coils)- they center the axle on their own without any issues. The leafs have holes in them that pins on the axle perches sit inside of, and in combination with the U-bolts, that axle isn't going to move forwards, backwards, left, or right- not without a MASSIVE force causing them to (such as dropping the Jeep sideways off of a cliff from 500 feet up, and landing sideways, breaking the centering pins and u-bolts).
The addition of the track bar causes the leaf springs to bind up, because they can't shimmy side to side like coil springs can, which causes the track bar to move in a perfectly circular arch and thus binding up the leaf springs, limiting flex entirely and can actually cause components to break (eventually). Remove them entirely, the YJ is the ONLY vehicle that has EVER had a track bar setup on a leaf sprung vehicle. They were put in place to shut up the media and other various agencies who were complaining about the CJ being "Easy to roll over."
although no tests have ever been done to prove that.
I DD my YJ with no track bars. I've noticed very little improvement or drawbacks to removing them on the roads. The results offroad are immediately apparent however, no more teetering on the simplest of obstacles.
FWIW, a Track bar and a Traction bar
are 2 entirely different things. Track bars limit flex, while Traction bars do little to limit flex- leaf springs of course.