BSA A65 Sidecar Racing (1965-66)

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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.

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

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