BeZerRa.com home of the Motion Transfer System, a mechanical R&D firm
Bezerra Corporation's revolutionary cycle feature is its pedal-crank mechanism, referred to as the "Stepper Mechanism". When placed in its bicycle application, it operates in a vertical, up-and-down, "stepper" motion, and is designed to replace the 6.0" to 7.5" conventional rotary crank arm. The Stepper Mechanism's crank arms are over three times longer (each) than most conventional rotary crank arms, providing more efficient transmission of force to the drive wheel. Professional racers will experience superior application of force, while casual riders will experience greater ease of use.
On a conventional bicycle, the rider generates speed and power using a cyclical action, whereas on the Bezerra Stepper bike, the rider generates power and speed using and up-and-down stepping motion. The Stepper crank arm leverages the force of the rider.
Conventional rotary pedal configurations are limited by "dead zones" occurring at the "12 o'clock" and "6 o'clock" pedal positions, where almost no force is transmitted from pedal to back wheel. The rider is forced to apply extra force simply to move the bicycle from this position, whether the bike is at a standstill or in motion. What's more, even if the cyclist attempted to stand up with his weight on the pedal for an entire half-cycle, the current bicycle design would only utilize an average of 63% of his applied force to push the bicycle forward. This is especially noticeable and problematic when cycling, as the bicycle seems to "jump forward" when the pedals are parallel to the ground only to slow down again at "12 o'clock" and "6 o'clock" as the cyclist strains to bring the other pedal past the dead zone.
The Bezerra technology eliminates the dead zone problem by replacing the cycling pedal motion with a more linear Stepper motion, which utilizes a monumental 93% of the rider's force - at minimum. From the standpoint of performance, the Stepper motion is significantly more efficient. Biomechanically, the motion is smooth and less fatiguing to the rider, and it does not position his or her legs and knees at the awkward angles that are inherent with a conventional cycling motion. In addition, the average cyclist can achieve double the RPM and sustain and maintain that RPM level for over two hours.
