Performance, tech explained
Kinematics & Frame Links
The shock does not sit at the wheel. The linkage decides how its spring becomes your rear end.
Photo: Jason Pischke, UnsplashLeverage
Another rocker, another rear end.
The leverage ratio says how much wheel travel you get per millimetre of shock stroke. If it falls through the travel, the rear end firms up towards the end.
Model frame with a shock around 250 × 72.5 mm. The progressive rocker uses the same pivot and the same shock, only its holes sit a few millimetres elsewhere.
Wheel force
Bottom-out support without an air can.
With a coil spring, progression only comes from the kinematics. Here the same spring acts on the rear wheel through both rockers.
Wheel force = spring rate × shock stroke ÷ leverage ratio, without preload, friction or damping.
Parts
Parts for this topic
We are adding the parts for this right now. Until then, the basics are in the shop.
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