The Weaver Ornithoplane No 2 was built from No 1 but with a more powerful engine and was towed on its own wheel behind a motor car to Hampton-in-Arden (the wings being strapped to the sides of the car), and was assembled and flown on 17 May 1910. In a series of four tests the Ornithoplane achieved a steady flight for a quarter of a mile, becoming the first monoplane to fly in Britain. The construction was of aluminium and bamboo, with an aluminium propellor driven by a 20hp engine, and a wing span of about 45 feet. The four cylinder engine was also made by Johnson, Hurley and Martin at their Alpha Engine Works in Gosford Street, Coventry.