In the 1910s, motorcycle racing was so dangerous that the press called the tracks "murderdromes." From the Flying Merkel to the Indian eight-valve that ended the sport's golden age, these are the machines that built — and nearly destroyed — American board track racing. Footage credit for every clip is shown on-screen throughout this video. Subscribe for more machines the world tried to forget. #motorcyclehistory #racinghistory #motorsporthistory #onelungracing #motovlog #forgottenhistory #boardtrackracing #motordrome #indianmotorcycle #excelsiormotorcycles #flyingmerkel #1910sracing