Page 65 - Urban Jungle mode d'emploi_EN_HD

RIM BRAKES
V-Brakes and cantilever brakes Operation and wear
V-brake (a) and cantilever brake designs (b) have two brake arms mounted separately on either side of the rim. When actuating the brake lever, both arms are pressed together by the cable, the pads touching the rim.
The friction generated by braking causes wear to the brake pads as well as to the rims. Frequent rides in the rain and dirt and on uneven ground can accelerate wear on both braking surfaces. Some rims are provided with wear indicators, e.g. grooves or circular indentations. If the rim is worn down to the point where the grooves or indentations are no longer visible, they need to be replaced. Once the abrasion of the rim has reached a certain critical point, the rim may break under the tyre pressure. This can make the wheel jam or the inner tube burst, both of which can cause an accident. Risk of falling!
Functional check
Check whether the brake pads are accurately aligned with the rims and still sufficiently thick. You can judge the wear of the brake pads by the appearance of grooves.
If the pads are worn down to the bottom of the grooves (c), it is time to replace them. Be sure to observe the appropriate instructions of the respective manufacturer.
See your URBAN JUNGLE dealer and ask them to examine the remaining thickness of the rims when you have worn through your second set of brake pads at the latest. Your URBAN JUNGLE dealer has special measuring devices for determining the remaining thickness of the rims.
The brake pads must hit the rim simultaneously, first touching it with the front portion of their surface. At the moment of first contact the rear portion of the pads should be a millimetre away from the braking surface. Viewed from the top the brake pads form a «V» with the trough pointing to the front (d). This setting is to prevent the brake pads from screeching when applied.
a
b
c
ORIGINAL OPERATING INSTRUCTIONS | 65 |