sentences:  The Baldwin part of the partnership was Owen M. Baldwin, who was a successful motorcycle racer at Brooklands (on a Matchless in 1922, and a Zenith-JAP in 1928), he also took the motorcycle land-speed record in 1925 on a Zenith-JAP at 124.62 mph.The Burney engine was a side-valve of 81mm bore and 96mm stroke, with an external 11 inch flywheel.Transmission was by a three speed Sturmey-Archer countershaft gearbox with kick starter.