INSTALLATION AND ADJUSTMENT
09
NCM
LYON
3.7.2 Brake Adjustment
Rim brakes(V-brakes)
Brake modulator
The brakes are equipped with a brake modulator, or “Power modulator.” This device includes a small spring in the brake
tube. As you squeeze the brake lever, you must compress the spring before you can apply full braking power to the rim.
This changes the way the brake feels, makes the application of stopping force more gradual, and also makes the adjust-
ment somewhat more sensitive.
WARNING:
Overuse or incorrect use of a front-wheel brake can cause the rear wheel to lift off the ground, resulting in decreased
control of the bike or even flipping the bike and rider in the forward direction; this can lead to serious injury and bicycle
damage. Be careful when applying the front brake, and avoid using it without also using the rear brake. Ideally, both
brakes should be applied at the same time, with the rider moving rearward on the bicycle depending on the amount of
braking pressure applied.
WARNING:
Brake-pads remove rim material when you apply the brake. If the brakes remove too much material over time, the rim can
become weak and break, decrease your control, and cause you to fall. Regularly check your rims. Replace a rim that is
worn.
Rim wear indicator: shallow groove in brake track on aluminum rim
1. Brake Modulator
2. barrel-adjuster
2
1
