BSA B50 MX | BMW R 12 |
---|
engine specs | |
Type | |
---|---|
air-cooled, four-stroke, single cylinder, OHV | Water-cooled, 2-cylinder, four-stroke boxer engine with four valves per cylinder operated by cam followers and two overhead camshafts per cylinder |
Displacement | |
499 cm3 | 1170 cm3 |
Bore X Stroke | |
3.3x3.5 in OR 84 mm | 4.0x2.9 in OR 102 mm |
Compression Ratio | |
10.0:1 | - |
Horsepower | |
34/6200 KW(hp)/RPM | 95/6500 KW(hp)/RPM |
Torque | |
28/5000 lb-ft/RPM OR 38/5000 Nm/RPM | 81/6000 lb-ft/RPM OR 110/6000 Nm/RPM |
Fuel System | |
Amal carburetor | - |
transmission specs | |
Gearbox | |
---|---|
4-speed, manual | 6-speed |
Clutch | |
wet multi-disc, manual | - |
Final Drive | |
chain | Shaft |
chassis specs | |
Frame | |
---|---|
steel | Tubular space frame in steel, engine self-supporting |
Front Suspension | |
telescopic fork | USD telescopic forks, 45 mm |
Rear Suspension | |
dual shocks | Aluminium Paralever swinging arm, directly linked WAD spring strut, spring base and rebound damping adjustable |
Front Brake | |
drum | Twin disc brake, floating brake discs, 310 mm, 4-piston monobloc fixed calipers |
Rear Brake | |
drum | Single disc brake, 265 mm, 2-piston floating caliper |
dimension specs | |
Overall Length | |
---|---|
85 in OR 2159 mm | 86.6 in OR 2200 mm |
Overall Width | |
29 in OR 737 mm | 32.7 in OR 831 mm |
Seat Height | |
32 in OR 813 mm | 29.7 in OR 754 mm |
Weelbase | |
54 in OR 1372 mm | - |
Ground Clearance | |
7 in OR 178 mm | - |
Weight | |
309 lbs OR 140 kg | 500 lbs OR 227 kg |
Fuel Capacity | |
2.4 gallons OR 9.1 L | 3.7 gallons OR 14.0 L |
Wheelbase | |
54 in OR 1372 mm | 59.8 in OR 1519 mm |
tyres specs | |
Front | |
---|---|
3.25 x 18 | 100/90-19 |
Rear | |
3.5 x 18 | 150/80-16 |