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Setting of rebound
Rebound adjust allows you to change the speed that the shock and fork rebound. If you didn’t have rebound adjust these suspension elements would rebound at the same speed as they compress and this would cause the wheel to jump up off the ground. This would mean that the rider does not have full control of the bike. The suspension must therefore be suppressed during the rebound phase. This is achieved by means of rebound adjust.
If the rebound adjust is set too low, the fork or shock rebounds too fast after the compression phase and the wheel jumps off the ground. If the rebound adjust is set too high, the fork rebounds too slowly and cannot react to bumps in the ground which are very close together.
Knobs to regulate rebound
The rebound is mainly adjusted via a red adjusting knob. This knob is positioned either on the top of the fork crown or at the bottom of the fork stanchion. Picture 1 Picture 2 Picture 3 Often the knob is marked „Rebound“. On Manitou products this rebound knob is blue and is positioned at the bottom of the right fork stanchion. On Marzocchi the knob is black and is positioned at the bottom of the left fork stanchion, sometimes covered under a black cover. Picture 4
The BoXXer R2C2 has two knobs at the bottom left of the fork which are used to adjust the rebound. The silver knob controls the rebound speed when the fork compresses only a little. The red knob controls the rebound speed when the fork uses the major part of its available travel.
The Vivid shock has two adjusting bolts for rebound. The silver knob controls the rebound speed when the shock only compresses a little. The red knob controls the rebound speed when the shock uses the majority of its available travel.
Adjusting the rebound
First adjust the shock on the rear triangle. To do this you click into your pedals out of the saddle, roll for a few meters and then bounce down onto the saddle with your entire body weight. Pay attention to the rear triangle and how it behaves. The rule of thumb is: The rear triangle should not bob more than once. If it does, then the rebound is set too low. Turn the adjusting knob in this case one or two clicks inwards. If the opposite is the case and there is no bob whatsoever, then the rebound is set too high. You should therefore gradually turn the adjusting knob outwards until you achieve the required adjustment.
Now press down on the fork and let go of the handlebar again. The fork rebounds back into its original position after the compression phase. Now turn the adjusting knob click by click, checking the rebound whilst doing so. The rebound speed should be adjusted so that the front wheel almost lifts off the ground. You can check for optimum adjustment by using the so-called curbstone test. Get on the bike and ride off the curb. The fork should only bob once.
When adjusting the rebound:
Extreme temperatures change the viscosity of the oil inside the shock. The shock can thus rebound more quickly or more slowly. This can then be compensated for via rebound adjust, too.
You can set up high- and lowspeed rebound and compression on the Cane Creek Double Barrel and DB Inline dampers. Picture 9 You can adjust the compression with the screws on the left hand side and the rebound with the screws on the right hand side.
You can adjust the lowspeed performance with the small screws and the highspeed performance with the bigger screws.