The first Motordrome was built in 1911 at Luna Park in Coney Island. It was a board track quite long with sloping wooden sides. Unfortunately as the bikes became more powerful terrible accidents happened. The races also became more predictable with the first bike to lead often being the winner. With this motordromes became less popular..But the riders found that with increased speed ,centrifugal force made it possible for them to ride sideways on a vertical wall. By 1915 the walls had become vertical and were initially known as silodromes, later to become known as The Wall of Death. The first silodrome was based on the dimensions of the diameter of a grain silo which was approx.20 to 36feet at the time.
The Indian and BSA Motorbike Companies realised that the shows were great advertisements for their bikes, and as you can see The Indian is still used today...a favourite of mine.