BSA – year 1910
Manufacturer: BSA Cycles Ltd., Birmingham, Anglia
W 1906 year, in which the first BSA motorcycle appeared, the label was already known worldwide for its high-quality bicycles, produced from 1880 year.
The first BSA motorcycle, just like most vehicles of that time, it was structurally similar to a bicycle. In a bicycle-type reinforced tubular frame, a single-cylinder engine with a displacement was attached 200 cm3 and power 1,5 kW (2 KM). Then a fuel tank was added, and a pulley is attached to the rear wheel, because the drive was transmitted by a belt.
The model z 1910 year already had most of the characteristics of a real motorcycle. Lowered, elongated frame, low-set saddle, vertical single-cylinder engine located as low as possible, guaranteed good vehicle stability. The four-stroke engine had a low-valve timing and was air-cooled. The diameter of the cylinder was 85 mm, piston stroke 88 mm. Total Drive Unit Capacity - 499 cm3. Maximum power 3,7 kW (5 KM). The drive to the rear wheel was transmitted directly from the engine (without gearbox) with a leather belt. Magneto ignition. Only the front wheel was sprung on the motorcycle. Two independent brakes acted on the rear wheel: pedal, located in the hub of the torpedo type and manual, clockwise, acting on the pulley.
The motorcycle was constantly improved and modernized. The design of the frame has changed, to which the shape of the fuel tank was adapted, front wheel brake and footrests have been added. Engine power increased to 4,4 kW (6 KM).
The production of BSA motorcycles gained more momentum after the First World War. W 1925 In the year, there were twelve models in the production program; from 250 with oblong, drip fuel tank, by 350 with lower valve timing- and overhead valve (OHV), further 500, 560, 770 all the way to class models 1000 with V-shaped two-cylinder engines, intended for driving with a sidecar. All these vehicles were, admittedly, solid and reliable, but did not match the construction of the year 1926. It was then that the Sloper model was created, which for the next 10 years has been a model for many two-track vehicle manufacturers.