BSA 1925 6 HP Model E27 770 cc 2 cyl sv 3506

BSA 1925 6 HP Model E 27 770 cc side valve V-twin frame # N 2127 engine # A223

The Model E is BSA’s first V-twin, primarily intended as a sidecar machine. It is introduced in 1920 and remains in production up to 1932. In 1922 a somewhat scaled up version is brought out, the 986 cc model F. From 1932 on the 986 cc model will be BSA’s only V-twin.
The 76×85 engine has the cylinders set at a 50 degree angle. The valves are interchangeable,
with quickly adjustable tappets. The constant loss lubrication system employs a mechanical pump with an emergency hand pump. Primary and secondary transmission is by chain. The 1925 Model E is available in two versions, “Light” and “De Luxe”. Among the differences are a more elaborate front mudguard and quickly detachable and interchangeable wheels on the De Luxe model. The Model E is not only aimed at sidecar enthousiasts, but also at solo riders. The 1927 catalogue states: “Although the present trend is to make all large twin cylinder machines almost solely passenger vehicles, it should be noted that the light model provides a sweet, easily handled solo mount for those riders who find a fascination in the big reserve of power and feeling of road supremacy coupled with the smooth running that can only be obtained from machines of the twin type.”

The machine we present here has been restored and comes with Lucas acetylene lighting, bulb horn, pillion seat and rear view mirror. She has been fitted with new pistons recently and proved to be a reliable runner in various vintage club outings.