| YAMAHA PW80 | BMW R 12 |
|---|
| engine specs | |
| Type | |
|---|---|
| Air Cooled, 2-stroke, Reed Valve, Forward-inclined Single Cylinder | Water-cooled, 2-cylinder, four-stroke boxer engine with four valves per cylinder operated by cam followers and two overhead camshafts per cylinder |
| Displacement | |
| 79 cm3 | 1170 cm3 |
| Bore X Stroke | |
| 1.9x1.8 in OR 48 mm | 4.0x2.9 in OR 102 mm |
| Compression Ratio | |
| 6.6:1 | - |
| Horsepower | |
| 42/5500 KW(hp)/RPM | 95/6500 KW(hp)/RPM |
| Torque | |
| 4.6/0 lb-ft/RPM OR 6/0 Nm/RPM | 81/6000 lb-ft/RPM OR 110/6000 Nm/RPM |
| Fuel System | |
| Mikuni VM15/1 Carburetor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 3-speed manual | 6-speed |
| Clutch | |
| Automatic | - |
| Final Drive | |
| Chain | Shaft |
| chassis specs | |
| Frame | |
|---|---|
| Steel Tube Backbone | Tubular space frame in steel, engine self-supporting |
| Front Suspension | |
| Telescopic Forks 110 mm travel | USD telescopic forks, 45 mm |
| Rear Suspension | |
| Swingarm (monocross) 95mm travel | Aluminium Paralever swinging arm, directly linked WAD spring strut, spring base and rebound damping adjustable |
| Front Brake | |
| Single Disc, 95 mm | Twin disc brake, floating brake discs, 310 mm, 4-piston monobloc fixed calipers |
| Rear Brake | |
| Drum, 110 Mm | Single disc brake, 265 mm, 2-piston floating caliper |
| dimension specs | |
| Overall Length | |
|---|---|
| 60.6 in OR 1539 mm | 86.6 in OR 2200 mm |
| Overall Width | |
| 25.2 in OR 640 mm | 32.7 in OR 831 mm |
| Seat Height | |
| 25 in OR 635 mm | 29.7 in OR 754 mm |
| Ground Clearance | |
| 7.3 in OR 185 mm | - |
| Weight | |
| 134 lbs OR 61 kg | 500 lbs OR 227 kg |
| Fuel Capacity | |
| 1.3 gallons OR 4.9 L | 3.7 gallons OR 14.0 L |
| Wheelbase | |
| 41.5 in OR 1054 mm | 59.8 in OR 1519 mm |
| tyres specs | |
| Front | |
|---|---|
| 2.50-14 4PR | 100/90-19 |
| Rear | |
| 3.00-12 4PR | 150/80-16 |
