As the car leaves it pitch rotates. While this is happening the stored energy in the front spring/torsion bar is being used up. This energy diminishes until the suspension is at the end of its travel. The trick is to adjust the rebound so that the limit is never reached. Load transfer stops once the front wheels are off the ground as far as body weight is concerned. The other suspension factor controlling load now is rear housing control. Of course there is still the issue of pitch rotation. Is the car coming back down, staying neutral, or still going up?
Doug