A recurring theme in dyno testing is the idea of developing a dyno test library archiving performance of low and high speed shim stack. With the library, components of the shim stack could be mixed and matched to create any damping force profile needed.
A thread on Thumper Talk outlines the process and proposed three shim stack configurations spanning the range of tuning:
- g02: Baseline shim stack with balanced low and high speed damping
- g01: Softer low speed stack to improve ground compliance and an additonal shim in the high speed stack to give the bottoming resistance needed for rough tracks
- g03: Baseline low speed stack to keep chassis control and softer high speed for smooth operation on groomed tracks
The proposed configurations make no difference in high or low speed damping. All three shim stacks follow the same damping force curve and are simply stiffer or softer. MXScandinavia knew that, but dyno tested the shim stacks anyway.
Changes to the high or low speed stack make little difference in high or low speed damping. Dyno tests have demonstrated that over and over again. But the myth still persists.