BSA A10 Road Rocket Make Model | BSA A10 Road Rocket | Year | 1959 | Engine | Air-cooled pushrod-operated overhead valve four-stroke, with cast-iron cylinder head and barrel. One-piece built-up crankshaft, with ball-bearing drive side mains and white-metal bush on timing side. Split, steel connecting rods with white-metal slipper bearings. Three-ring alloy pistons. | Capacity | 646 | Bore x Stroke | 70 X 84mm | Compression Ratio | 7.2:1 | Induction | Single Amal carburetor | Ignition / Starting | Lucas magneto / | Max power | 35 hp @ 5700 rpm | Max Torque | | Transmission / Drive | 4 Speed / chain | Gear ratios | 1st, 11.68:1; 2nd, 7.96:1; 3rd, 5.48:1; 4th, 4.53:1. | Frame | Welded seamless steel tubing with duplex downtubes and full cradle engine support, bolted-on rear sub frame | Front Suspension | Telescopic forks with coil springs and hydraulic damping | Rear Suspension | Plunger-type, with shock and rebound springs, undamped. | Front Brakes | Drum | Rear Brakes | Drum | Front Tyre | 3.25-19 | Rear Tyre | 4.00-19 | Dry-Weight | 425 lb | Fuel Capacity | | |