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 |
