The Uno – A Zippy little bike
Since Ben had competed at the International level of the science fair before, he was able to apply to Team Canada directly without going through the Regional and National levels of competition. It was this competition that he submitted his first Uno. A simple frame made from angle iron and mountain bike wheels, which were of course powered by electric motors. The Uno model you see here, Ben's third prototype, was unveiled at the National Show. After many hand drawn sketches and complex drawings, he began the machining work of building the basic drive/suspension assembly. He didn't know CAD software, but instead used the free Google software called Google SketchUp. Ironically, a salesman came knocking shortly after, trying to sell SolidWorks, a 3-D CAD software package. Ben explained he couldn't afford anything like that, but he did show the salesman what he was working on. The next day a copy of SolidWorks and a SolidWorks for Dummies book arrived.
Operation of the 54.4 kg (120 lb) machine is simple, in fact it's so simple there are no controls except for an on-off switch. To go forward you simply push your body weight forward to tilt the machine. To back up, just lean back on the seat to tilt it backwards and back it goes. The farther you lean, the faster it accelerates. The gyro tells the ECU how much to accelerate and that in turn delivers the proper amount of current to the electric motors, one for each wheel.
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