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These graphs extrapolated from the shock dyno illustrate the acceleration rate of a shock, with the Y-axis representing the force (pounds) exerted on the shock rod, and the X-axis representing the acceleration of the rod in inches per second. The top half of the graph is for the compression stroke of the shock, while the bottom half is for rebound. As the shock valving is stiffened up, the lines on the graph separate farther from zero. To put it succinctly, the flatter and more linear the slope of the lines, the more predictably a shock will respond to varying loads. The goal is to design a shock that exhibits minimal changes in acceleration regardless of the size of the loads. With double-adjustable shocks, this data also ensures that changing the compression valving doesn't affect the rebound valving and vice versa.