BSA Motorcycles 1920s

Today in Motorcycle History

BSA 1929 A29 174cc

Engine. Single Cylinder 1.74 h.p. Two-stroke, 60 x 61.5 m/m bore and stroke. Roller big end bearing, engine mainshaft mounted on two ball bearings. Air cleaner to carburetter. Kick starter.

Gear Box. Two-speed in unit construction with engine. Floating dry plate clutch mounted on lay-shaft. Primary drive by gear ; final drive by roller chain ½in. pitch x .305in. wide.

Lubrication. Engine lubrication by petroil. Primary drive gears run in oil.

Frame. Duplex type. Built up of steel tubes with reinforced trapped ends, firmly bolted together. Spring Fork. B.S.A. type, with tension spring and shock absorbers.

Handlebar. Adjustable type, with rubber. grips.

Tank. Saddle type. Capacity l½ gallons.

Tyres. 24in.× 2.375in. Dunlop cord, W.O. 25in.× 2.75in. W.O. extra.

Brakes. Two independent brakes operating in same drum in rear wheel.

Saddle. Best quality pan seat with leg springs. Spring seat saddle extra.

Price £26. 5s.