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The Bezerra Stepper is a Swiss Army knife of an invention with application to many human-powered vehicles (like wheelchairs, tricycles, recumbent tricycles, paddle boats and so on). For now, we will be providing recumbent tricycles to as many mobility-impaired people as we can.A few years ago the only Bezerra Stepper Vehicle available was a bicycle. These two articles compare the Bezerra Stepper Bicycle with a conventional bicycle.

Bezerra Stepper Bicycle — How It Works: Article features a video of Wilson X. Bezerra demonstrating the differences between a BezErra Stepper Bicycle and a conventional bicycle. Most of this is in layman’s terms.

Bezerra Stepper Bicycle — Independent Lab Report: Sigma Design’s final report on the comparison testing it did of a conventional bicycle against a Bezerra Stepper Bicycle. This is a highly technical piece.

Mr. Bezerra also has designs for other human-powered vehicles.






Hi – my name is Wilson Bezerra. I’m excited right now because I have an opportunity to talk to you about a product that we’ve been developing over the course of nearly 21 years – a personal passionate project that started with my love for bicycles.

People all across the world ride bicycles. Over a 130 million bicycles are sold each year worldwide, twice the number of cars. It’s a massive market. What’s interesting about the bicycle however is that its shape and configuration has barely changed in the past one hundred years. We still use the basic chain-driven mechanism used back in 1885, a model that is not really as efficient as it could be.

The inefficiencies of the conventional bicycle are no secret. Many designers have tried reinventing the bicycle, but most of these new high-tech bicycles look strange. Or [they] are too expensive, too cumbersome or too complicated to easily manufacture. Most new designs have ended up looking more like space pods rather than the actual bicycles we are used to. The new configuration will make it easy for manufacturers to adopt as opposed to making a new bicycle which looks like it came out of a cartoon.

[Efficiencies in this new model come from three places.]

Making the pedal crank 3 times longer increased the leverage by nearly 300%

One: A conventional bicycle has a very short crank arm, usually only seven inches long. This is a problem because bicycles move using leverage; the longer the crank arm the more leverage and power the rider will be able to generate. We knew if we could create a longer crank arm we could increase the leverage and thus multiply the power per pedal stroke.

Two: On a conventional bicycle, the rider must pedal in a circular motion which is extremely inefficient and wastes an incredible amount of energy. What we came up with was groundbreaking and starts with a revolutionary pedal system. Now what is a revolutionary pedal system here is a conventional bicycle the problem lies not so much in the frame but in its outdated pedal system.

Three: There are dead zones in the conventional bicycle when the pedals are at the twelve and six positions. At these positions you have to use additional energy in both pushing and pulling the pedals. When the pedals are in the vertical position the bicycle has zero application of force it does no work for you, so it’s entirely up to the rider to propel the bicycle forward.

[Our first step was to] engineer a cog, a simple device that allows the back wheel to rotate at nearly double the revolutions per minute that a conventional bicycle can achieve. Second we engineered a pendulum that allows us to move the pedal system to the rear of the bicycle instead of right at the crank arms.

Now all the torque produced by the riders stepping motion goes directly to the back wheel and there’s no energy defused at [either] the front sprocket or through the chain as in the conventional pedal system. By moving the main mechanism of the bicycle closer to the rear wheel we were able to attach a 20-inch crank arm, 13 inches longer than the current 7-inch crank arm. This translates into a nearly 300% increase in leverage.

Then we worked on increasing movement efficiency. [That is,] moving your legs less [while] at the same time channeling even more extra power [into] the circular peddling motion. A conventional bicycle strains your joints and diffuses your force in various directions at once, plus those dreaded dead zones. As a result of these drawbacks you use only about 63% of your force on a conventional bicycle, thus wasting 37% of your energy.

Now compare this to the stepper bicycle which eliminates the dead zones. The crank arm goes up and down in a stepping motion just like walking, thus your physical motion is shorter and more of your energy goes into propelling the machine. Strain is taken off your knees and muscles and the direct application [of force] is now close to 93%. And as an added bonus the rider can easily stand-up at any time.

How far does 1 pedal revolution push you? Conventional bike = 32 feet ... Bezerra Stepper Bike = 76 feet

How do all these engineering breakthroughs translate into the real world? On a regular bicycle, one full pedal revolution will push the rider 32 feet. On the stepper bicycle, one pedal revolution will push the rider 76 feet. This is quite incredible – unheard of, a whole new evolution of the bicycle.

There’s more. Due to the increase in efficiency of the stepper motion, the cyclist can complete three pedal strokes in the same time as a conventional cyclist completes one revolution. We are convinced that in a race a stepper cyclist would blow away a conventional cyclist using the same amount of energy.

The stepper system is more than just speed alone it also brings about a breakthrough in adaptability. Racers have been using conventional cycles which could only utilize less than two -thirds of their natural ability. We could be looking at a brand new world record being set and a complete overhaul of the way bicycle racing is managed; you could even dream of beating these guys yourself.

Incidentally, the U-S Cycling Federation has approved our design for use in mass start races, so you could race against them if you wanted.

The stepper bicycle pedal system is so far advanced that it can be adjusted to accommodate any degree of desired force. What does this mean?

What if you had a knee injury, or if were disabled, or if you only had one leg?

Riding up the hill or over rough terrain is made easier than ever before. We go even further – what if you had a knee injury, or if were disabled, or if you only had one leg? Due to the highly adjustable nature of this system, a rider can ride this bicycle with ease. It’s amazing.

If you’re a professional cyclist, this adjustability takes you to a whole new level of functionality. You can set it up to respond at takeoff and then sustain the momentum to conserve your energy. The stepper bicycle opens up cycling to a world of new riders who could never ride before and expands the world for those who are already in it.

The stepper bicycle is retail friendly; all we have changed is the crank arm system and our split rear frame. This means that almost every accessory available for conventional bicycles is applicable to our design as well, which eases the adaptability for manufacturers. This means that cycling retailers will still be able to sell standard accessories which are their bread and butter, as will the manufacturers of these accessories.


Help Us Give the Gift of Mobility - Donate Today!

 YES! I Want to Help OR Call 1-973-595-7775 E-mail:

OR Send Gift to: F.I.T. Foundation, 232 Union Boulevard, Totowa, NJ 07512



Your Donation Helps: disabled people, disabled children, disabled veterans, people with limited mobility, physically disabled, children with disabilities, people with physical disabilities, people who are physically impaired, people with disabling diseases such as arthrogryposis, muscular dystrophy, arthritis, angelmans syndrome, fibromyalgia, accident injuries and other physical impairments.

Charitable Donations Help Pay For: motorized equipment, handicap assistive devices, assistive technology, mobility equipment, mobility devices, disability equipment, exercise equipment for disabled, disability equipment, manufacturing of mobility devices, distribution of our mobility devices to anyone who needs and can benefit from them.