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The spring stiffness is the force that is required to compress a spring a certain distance. Softer springs mean that the suspension is much more sensitive and with harder springs the suspension becomes much firmer. It is necessary to adjust the spring stiffness to suit the rider’s weight, so that the suspension does not sink too far when the rider sits on the bike. The suspension must not bottom out.
All Canyon bikes which are fitted with steel springs have optimized spring stiffness (OptiTune). That means depending on the frame size we fit various types of suspension springs.
The pre-load allows the sag (negative travel) to be finely adjusted. If the pre-load is increased, the amount of travel is reduced.
When using the Marzocchi 66 RCV you can adjust the spring pre-load with the red knob on the right-hand fork. On the left of this fork it is possible to adjust the load deflection curve with air pressure from linear through to progressive.
The BoXXer fork allows the adjustment of pre-load via the black knob at the top of the left-hand stanchion.
On suspension forks the relevant knob to adjust the spring stiffness is often marked “Coil” or “Preload”.Picture 1
On shocks with steel springs you can alter the spring pre-load by turning the pre-load knob. Picture 2
Warning: Turn the steel spring a maximum of two turns. If this is not enough to adequately pre-load the springs, you’ll need to fit a spring with a different spring stiffness.
The majority of suspension parts use air. Instead of spring stiffness or pre-load being changed, one then simply alters the air pressure.
Spring elements must not bottom out.