Toward the end of construction , he realized the main spar stretching across the back of the wing was coming in heavier than expected . David Barford is part of a small group of amateurs obsessed with man-powered aircraft . His BetterFly is 22-meters wide and can take flight under Barford 's pedal-power . The plane has been designed to be able to fly for up to five hours on one charge, which means it could potentially make the trip from London to New York in just over an hour.
David Barford is part of a small group of amateurs obsessed with man-powered aircraft . His BetterFly is 22-meters wide and can take flight under Barford 's pedal-power . The plane has been designed to be able to fly for up to five hours on one charge, which means it could potentially make the trip from London to New York in just over an hour.