Old 07-14-13, 12:13 AM
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First human powered flight of a helicopter on a modified bike wins $250,000



The world’s first human-powered helicopter by a Canadian engineer has won the Sikorsky Prize after performing a minute-long flight at an altitude of 3.3 meters – fueled only by the pilot’s pedaling of a modified bicycle.
Rest of article to link above

I wonder what the gear ratio on that bike was?
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