axle 500 for example a 174 horsepower engine generally supplied as an industry standard under full throttle acceleration with a heavy load could generate torque in the range of 36 000 lbs ft based upon 458 lbs ft u00d7 2 43 1 torque multiplication u00d7 3 58 1 reduction in low gear u00d7 9 08 1 rear axle drive ratio adding an additional rotational force of approximately 25 or another 9 000 lbs ft for the inertia of the loaded trailer at 16 u2033 of lift height to the 36 000 lbs ft yields approximately 45 000 lbs ft reduced proportionally by the length of the trailing arm assembly 200 approximately 5 feet for a gross weight yield of 9000 lbs ft delivered to the elastomeric trailing arm bushings 210 at the center of the frame 600 without the modular suspension system 10 the terminal tractor bucks or rises abruptly during acceleration the modular suspension system 10 transfers the primary accelerating forces to the frame 600 of the terminal tractor at the center pivot bushing socket tube 610 effectively balancing the effects of the accelerative forces between the front and rear suspensions and thus reducing the rise at front of the terminal tractor during acceleration and minimizing the resulting lift to the driver fifth when the fifth wheel plate 300 is raised and the trailer is loaded during deceleration braking torque is the main factor in determining applied force under good repair and a hard braking application as much a 50 000 lbs ft plus another 25 for kinetic.