Polkupyörän käyttöopas Bruksanvisning för cykel Bicycle ... - Helkama

Cantilever and caliper brakes
A good braking effect and safety can be attained by making sure the brakes are in the
right position in relation to the rim and that the gap is sufficiently small. Cantilever
and caliper brakes have many adjustment possibilities which enable the brake pads to
be adjusted in precisely the right place in relation to the rims. The gap which increases
with wear between the brake pad and the rim can be adjusted by turning the adjuster
screw on the handbrake levers.
The toe-in angle of the brake pads of the cantilever and caliper brakes should be 2-3º
(Fig. 8) and the distance from the rim is 1-2 mm. (Fig. 9). Many brake models have the
option of adjusting the spring back factor of either one or both of the brake levers (Fig.
9/a).
The curvature of the brake pad should follow the curvature of the rim.
Fig. 8
b
a
1-2 mm
15 mm
Fig. 9
a
1-2 mm
Fig. 10
Drum brakes
The brake cable is adjusted by turning the adjuster screw of either the brake lever or the
brake unit (Fig. 10/a), such that the brake lever can move about 15 mm. (Fig. 10/b).
Never dismantle the brake unit yourself!
Familiarize yourself with the instructions the component manufacturer has included
with the bicycle.
IF YOU ARE UNCERTAIN ABOUT HOW TO ADJUST THE
BRAKES, CONTACT A HELKAMA DEALER!
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