written by Team YOKOMO

BD9 セッティングスキル:サスマウントの固定に注意して左右バランスを最適化



In the screw holes on the chassis, there is a small manufacturing tolerance so the holes are slightly larger than the screws that fit through them.

The figure below shows a simplified picture of installing the screws and suspension mount.  Because the screw is slightly smaller than the hole, there is the possibility of the screw not mounting exactly in the center.  The countersinking should help with the alignment, but as you tighten screw A, the other screw (B) may move slightly in the direction you are screwing.



Even a small deviation of 0.2 or 0.3mm at the suspension arm can be increased by the end of the wishbone and create a difference in the toe angles of 1 degree or more between each side.

To help minimize this, it is recommended to tighten the left and right screws a little at a time, alternating between them.

The suspension mount may also move following a crash, so if you feel the balance of the car is not right, please check the mounts and carefully re-tighten them.  This can easily help to improve the car.