Welkin WKEM002, User Manual

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2. Pedal Assist Mode 2 Mode-Middle Press “+”to crease into pedal assist level “2-5“.From low
to high speed.
3. Electric function Press the "-" key to display step "0" Then low power
mode directly convert to pure electric mode.
Using Gears
Some model bicycles are equipped with gears. Gears are used to change the ratio between
rotations of the rear wheel and the crank set. This enables you to pedal less and travel faster
on flat or downhill sections, or pedal faster and travel slower to climb hills. Gearing is
independent to pedal assistance, so pedal assistance operates the same regardless of selected
gear. Remember, however, that pedal assistance is "governed" by overall speed.
The select-able gears are located on the rear wheel, known as a "gear cluster" or "cassette".
The larger the gear, the smaller number of rotations per rotation of the crank. The largest gear
is the "lowest" and is referred to as "1". As each gear becomes smaller, it is a "higher" gear
then the previous and is numbered sequentially. The number of gears may vary between
different models. Beneath the gear cluster is the derailleur mechanism, which moves the chain,
so it runs on different gears. The derailleur is operated by the rider using controls mounted on
the handlebars.
The gear change is "indexed" so each gear selection positively engages – this is factory set and
should require no adjustment. There may be slight variations between bicycle models in
method to change gear "up" (from a lower gear to a higher gear), or to change gear "down"
(from a higher gear to a lower gear). The image shows a "7-speed" type that uses a button for
changing up gears (push button to activate derailleur), and a lever for changing down gears
(rotate lever forward to activate derailleur).