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MY20H06-2_1.0_26.08.2019
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Overview
3.1.3.2 Disc brake
Figure 11: Pedelec brake system with a disc brake – example
1
Brake disc
2
Brake calliper with brake linings
3
Handlebars with brake lever
4
Front wheel brake disc
5
Rear wheel brake disc
On a pedelec with a disc brake, the brake disc is
screwed permanently to the wheel
hub
.
The
brake lever
is pushed to increase brake
pressure. The brake fluid is used to transfer
pressure through the brake lines to the cylinders
in the brake calliper. The braking force is boosted
by a speed reduction and applied to the brake
linings. These apply the brake disc mechanically.
If the
brake lever
is pushed, the brake linings are
pressed against the brake disc and the wheel
movement is decelerated until it comes to a stop.
3.1.3.3 Back-pedal brake
Figure 12: Pedelec brake system with a back-pedal brake –
example
1
Rear wheel rim brake
2
Handlebars
with
brake lever
3
Front wheel rim brake
4
Pedal
5
Back-pedal brake
The back-pedal brake stops the movement of the
rear wheel when the rider pedals in the opposite
direction to the direction of travel.
1
2
3
4
5
5
2
3
4
1