sentences:  Between 1923 and 1930, riders Norris, Harold Beart and Jackson achieved considerable success with Blackburne KMA, KMB racing engine and KMC sports engine powered machines.In 1923 Burney Baldwin & Co Ltd started making Burney motorcycles.The motorcycle was exhibited at the 1923 Olympia show, and the Vintage Motor Cycle Club library holds a copy of their promotional literature.