Ergon CF3 Pro Carbon Instructions D'installation Et D'utilisation page 67

ERGON BIKE ERGONOMICS
Making this adjustment can also be done according to set methods. The rider
sits on the bike in the riding position. The cranks should be horizontal, The fore /
aft adjustment should be make until the knee cap of whichever leg is the leading
leg is directly over the pedal axle (Fig. B).
Fig. B: Knee cap method
Horizontal line from the knee
cap to the pedal axle
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