Race setup, featuring widetrack design with inboard shock absorbers. This high performance design requires the use of the cycle guard front fenders. Camber, toe, ride height, spring rate (different springs), shock rate and sway bar are all adjustable.
1. A major failing of the conventional placement of the spring/shock absorber is called falling rate suspension. As the wheel progresses through its bump travel, the spring becomes increasingly horizontal and thereby becomes softer in the vertical direction (the one that matters). At absolutely horizontal, the effective spring rate would be zero.
By introducing a pushrod and rocker assembly, carefully engineered, the angle of the pushrod to rocker and rocker to shock can be maintained as a near right angle at ride height therefore introducing rising rate suspension. This is of course more desirable, giving a more linear wheel deflection and better control. It has resulted in much lighter spring being required to do the same job.
2 There is an aerodynamic advantage in putting the coil/shock unit out of the air stream.
3 There is significantly less unsprung weight in replacing the coil/shock with a pushrod.
4 Ride height is easily adjusted with pushrod length.