Saab Forums - Saab Enthusiast Forum - Tranmission Shift Rod

1. A shift rod for a gear shift transmission of a motor vehicle of the type that is flanged to an engine unit with the desired transmission gears being manually preselectable and shiftable by means of twisting and longitudinal movements of said shift rod, said shift rod being constructed in two rod segments connected with one another by means of a vibration-damping coupling joint, wherein the coupling joint is housed in a damping body that, in a longitudinal direction of the shift rod, is developed to be softly resilient over a short distance, but that, with a subsequent strong spring progression, is developed to be very stiff with respect to torsion in twisting direction of the shift rod, wherein the damping body comprises a rectangular damping plate and a metal plate that shrouds the damping plate.

2. A shift rod according to claim 1, wherein the damping plate, at one side, has a cylindrically thickened joint receiving device that extends along the width of the plate.

3. A shift rod according to claim 2, wherein the damping body forms an angle of about 45° with respect to the longitudinal axis of the shift rod, so that its longitudinal axis is located vertically with respect to a direction of the movement of the main vibration of the engine transmission unit.

4. A shift rod according to claim 2, wherein the metal plate is bent, in a U-shape, around the joint receiving device 10 with a small radial play (s) and is riveted to the other side of the damping plate.

5. A shift rod according to claim 4 wherein the damping plate is made of one of rubber and elastomer and, in order to provide stiffness with respect to torsion, contains reinforcing elements that are vulcanized therein.

6. A shift rod according to claim 1 wherein the damping plate is made of one of rubber and elastomer and, in order to provide stiffness with respect to torsion, contains reinforcing elements that are vulcanized in.

7. A shift rod according to claim 1, wherein the forked rod head is mounted at one rod segment, and wherein the joint receiving device is held at a front face between two parallel forks of the head and is pivotably screwed together with same by means of hexagonal cap screw serving as a joint shaft.

8. A shift rod according to claim 7, wherein a metal sleeve is vulcanized into a bore of the joint receiving device, the hexagonal cap screw being fitted into said metal sleeve in an easily twistable way.

9. A shift rod according to claim 8, wherein the damping body forms an angle of about 45° with respect to the longitudinal axis of the shift rod, so that its longitudinal axis is located vertically with respect to a direction of the movement of the main vibration of the engine transmission unit.

10. A shift rod according to claim 2, wherein the joint receiving device is spaced vertically with respect to the longitudinal axis of the shift rod.
11. A shift rod for a gear shift transmission of a motor vehicle of the type that is flanged to an engine unit with the desired transmission gears being manually preselectable and shiftable by means of twisting and longitudinal movements of said shift rod, said shift rod being constructed in two rod segments connected with one another by means of a vibration-damping coupling joint, wherein the coupling joint is housed in a damping body that, in a longitudinal direction of the shift rod, is developed to be softly resilient over a short distance, but that, with a subsequent strong spring progression, is developed to be very stiff with respect to torsion in twisting direction of the shift rod, wherein the damping body forms an angle of about 45° with respect to the longitudinal axis of the shift rod, so that its longitudinal axis is located vertically with respect to a direction of the movement of the main vibration of the engine transmission unit.