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Rpm sensor on the Bearing of Pedal Cranks
The rpm sensor that determines the pedaling force may lose its electronic calibration and that
leads to the malfunctioning of assisted pedaling. Therefore, keep magnetic and metal objects,
such as a hammer, away from the crank bearing.
The Serial Number of New Darfon Innovation Bike is in the Warranty Card
The serial number of your new Darfon Innovation bike and its frame number validate your after-
sale (warranty) service. Therefore, check that the serial numbers of the bike and the frame are
intact when you are going to buy a bike. Do not buy a bike with a sign that these numbers are
tampered with!
• The new bike serial number is found in the warranty card.
• The frame serial number is found on the base of bottom bracket shell, the rear drop-out of the
frame, or down tube.
Correct Use
Familiarize yourself with the following information before riding your electric bike:
• Safety notes given in the user's manual
• Technical data provided in the user's manual
• Traffic regulations and rules
• Legal and safety standards regarding electric bikes
The structure of the e-bike should comply with the regulations of your country when you bought
it. Or, it may be illegal in your country to ride this e-bike. The structure of this bicycle may be
adjusted to the regulations of individual country if necessary. Please read thoroughly the laws
and regulations applicable to e-bikes for the following key points:
• The power output of the motor and the maximum aided speed
• Accessories required to ride on highway
• Obligation to have a license
• The minimum age to ride an electric bike legally
• Requirement to wear a helmet while riding
The e-bike is designed for riding on roads and alleys with asphalt pavement. The tires maintain
their traction on such a pavement. However, this bicycle is not designed to ride or jump over
obstacles such as the curbs on roadsides. Similarly, it is not designed to carry more than one (1)
person, i.e. no passenger other than the rider him/herself. Besides, it is not a racing bicycle .
The e-bike is capable of carrying 100kg (220lbs) including the rider, accessories and luggage. Do
not carry more than the total weight allowed. The BESV e-bike is not designed to be a towing
vehicle, nor allowed to ride behind a towing vehicle, tow another bike or pull another bike with a
bike linking system.
Make sure that your e-bike is used correctly as it is intended. If the bike is not used in the way it is
designed to, the parts may break down, leading to accident or injury.
The e-bike is not intended to set limits on the size, senses or intelligence of certain people.
However, children under 14 are not recommended to ride this bike.
rear-mounted or portable design. Therefore, please remove the battery before the bicycle is
transported. In addition, it is recommended to remove parts that cannot be fastened with bolts
before transportation, such as the gauge, as they may become loose and missing during the
transportation.
Electric Bike
The electric bike of Darfon Innovation is an electrically assisted bike that provides assistance
when you are pedaling. The rpm sensor located on the pedal crank bearing detects how hard you
are pedaling the bike and determines how much power the motor should provide to give you a
ride. The electric motor is turned off as soon as you stop pedaling. At the maximum aided speed,
the motor starts to reduce its power output until the aided pedals are turned off. For example,
the maximum aided speed is 25km/hr (15.5mph) in European countries. You may ride faster than
this maximum aided speed if you turn off the assisted pedaling function.