4.7.3Chain
When the chain and elongate it to a certain extent, it will in the chain will climb to the chain wheel and jump, and at
this time the chain has not meshed with the chain wheel correctly, thus affecting the cycling performance; in case of such a
situation, the chain should be timely adjusted.
To determine the length of the chain: adjust the front derailleur to the lowest shift (the smallest tooth of the chain ring)
and also adjust the back fender to the lowest shift ( the smallest tooth of the flywheel) to check whether the chain sag is
more than 15mm (as shown). If it is more than 15mm, the chain is too long, please go to your supplier to shorten the chain
in order to maintain the best cycling performance of your bike.
Common sense of the use of speed control system
Do not tread reversely in the course of speed change so as not to lead to failure and the chain falls off.
As far as possible, do not change the gear-speed ratio substantially and should change the speed in accordance with the
order.
If the electric bike is idle for a long time, the chain will be changed to the minimum keyboard tooth and the smallest
flywheel, so as to avoid fatigue of the mechanical flexibility.
The chain, fluted disc, flywheel, derailleur should be always washed, wiped, and lubricated (oiled appropriately).
4.8Damping system
Damping can keep the tire buffer contact with the ground when your bike is running on the uneven road so that the
driver feels more comfortable while driving on the uneven road.
Damping hardness can be adjusted by adjusting the damping coefficient according to road conditions and personal
preference.
Adjustment method of damping ( as shown): rotate toward the “+” direction to increase the damping coefficient, thus
increasing the damping hardness; rotate toward the “-“ direction to reduce the damping coefficient thus decreasing the
damping hardness.
