BSA A65 Sidecar Racing (1965-66)

The BSA A65 Sidecar Racing motorcycle was built in 1965-66 with a four stroke, parallel twin cylinder, OHV engine and a capacity of 654 cc/39.9 cub in. It has Amal monobloc 389/67 carburetors, air cooling, a compression ratio of 9.0:1 and a dry sump lubrication system. The engine oil used is SAE 20W/50 and it features a 2-in-1 exhaust, twin coil ignition system and Champion N4 spark plug. The battery is made up of two 12V, 10 a.h. Lucas RM19. The clutch is multi-plate with built-in cush drive and the transmission is four speed with a final chain drive. The frame is made of steel tubing, cradle and adjusted to accommodate the sidecar. The front suspension has telescopic forks with coil springs while the rear suspension consists of a coil spring/hydraulically damped system. The wheels are made of steel with wire spokes. These specifications are generally similar to the A65 R and T/R models. The motorcycle required a running start to activate and its features were perfect for sidecar racing.

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Technical specifications:

Make Model: BSA A65 Sidecar Racing

Year: 1965 – 66

Engine: Four stroke, parallel twin cylinder, OHV

Capacity: 654 cc / 39.9 cub in.

Bore x Stroke: 75 x 74 mm

Carburetors: Amal monobloc 389/67

Cooling System: Air cooled

Compression Ratio: 9.0:1

Lubrication: Dry sump

Engine Oil: SAE 20W/50

Exhaust: 2-into-1

Ignition: Twin coil

Spark Plug: Champion N4

Battery: 2 x 12V, 10 a.h., Lucas RM19

Starting: Running start

Clutch: Multi-plate with bult-in cush drive

Transmission: 4 Speed

Final Drive: Chain

Frame: Steel tubing, cradle, adjusted to accommodate sidecar

Front Suspension: Telescopic forks with coil spring – hydraulically damped

Rear Suspension: Coil spring/hydraulically damped

Wheels: Steel, wire spokes

Note: Specifications generally similar to the A65 R and T/R