This Patent Pending system eliminates the derailleur,
freewheel and ratchet. Instead, the pedal turns a generator that
generates electricity to recharge the battery. The E-Flyer's computer
senses the pedals energy sending this information to the drive motor.
The E-Flyer's gears are changed electrically by a unique
generator design. When the Cruise mode is on, any energy generated from
the pedal is electrically added to the Cruise, thus allowing the
E-Flyer's rider to pedal at any desired speed when using the Cruise.
This increases the speed and the distance per charge.
The Auto-Gear mode automatically changes the gears to
maintain a constant pedal speed, which is easily set by the E-Flyer
Console. The Boost mode uses energy from the battery to double the
energy from the pedal and double the speed of the bike.
Electric Bicycles currently on the market have a motor that
drives one of the wheels in addition to the bike's pedals and
derailleur. When these motors are running, the rider has to pedal faster
than the motor or they're just spinning the derailleur's ratchet.
Therefore, the rider must choose whether to pedal or run the motor, but
cannot do both together efficiently. In addition, the old mechanical
gears have to be constantly repositioned to stop the derailleur from
grinding the chain. Whenever the bike is stopped, the gears have to be
manually banged down to first gear while the bike is still moving.
Eltra's new E-Flyer eliminates all of these problems, brings a new exciting dimension to bicycling and will be available in 2009.
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