| Engine Configuration |
Single,
4-Stroke |
| Engine Displacement |
692.7cc |
| Engine Cooling
System |
Liquid |
| Compression
Ratio |
12.7:1 |
| Combustion
Chamber Design |
Pentroof |
| Valves Per
Cylinder |
4 |
| Intake Valves Per Cylinder |
2 (Steel) |
|
Exhaust Valves Per Cylinder
|
2 (Steel) |
| Bore x Stroke |
105.0mm x 80.0mm |
| Claimed
Peak Horsepower |
|
| Claimed
Peak Torque |
|
| Measured Peak Horsepower |
70.56 bhp @ 8,350 rpm |
| Measured Peak Torque |
50.93 lbs-ft @6,600 rpm |
| Measured Horsepower To Weight
Ratio |
5.2 pounds per horsepower |
| Engine Redline |
10,000 rpm |
| Valve Angle (Included) |
|
| Combustion
Chamber Volume |
59 cc |
| Valve Train
Type |
SOHC, Link-plate Chain Drive,
Bucket Tappers (Intake) and Forked Roller Rocker Arm (Exhaust) |
| Valve Adjustment
Interval |
6,200
miles (10,000km) |
| Intake Valve
Diameter |
42.0 mm |
| Exhaust
Valve Diameter |
36.0 mm |
| Intake
Valve Stem Diameter |
5.9 mm |
| Exhaust
Valve Stem Diameter |
5.9 mm |
| Intake
Valve Maximum Lift |
|
| Exhaust
Valve Maximum Lift |
|
| Intake
Valve Timing |
|
|
Open BTDC
|
|
|
Close ABDC
|
|
| Duration |
|
| Exhaust
Valve Timing |
|
| Open BBDC |
|
| Close ATDC |
|
| Duration |
|
| Valve Timing
Measuring Point |
|
| Fuel Delivery
System |
Keihin Fuel
Injection |
| Throttle Body
Venturi Size |
50 mm |
| Air Filter
Type |
Pleated Paper Element |
| Exhaust
System Type |
1-1, Stainless Steel |
| Ignition
System |
Digital |
| Lubrication
System |
Semi-Dry Sump |
| Oil Capacity |
1.8quarts (1.7
liters) |
| Fuel Capacity |
3.7 gallons (14.0
liters) |
| Transmission
Type |
6-speed,
Constant mesh |
| Clutch Type |
Multi-plate,
Wet, APTC Back-Torque-Limiting |
| Clutch Actuation System |
Hydraulic |
| Clutch Spring Type |
Coil |
| Number Of Clutch
Springs |
4 |
Number of Clutch Plates |
15 |
| Drive Plates |
8 |
| Driven Plates |
7 |
| Primary
Drive |
Gear (Straight-cut) |
| Primary Drive
Gear Teeth (Ratio) |
79/36 (2.194:1) |
| Final Drive Sprocket
Teeth (Ratio) |
40/16 (2.500:1) |
| Transmission Gear
Teeth (Ratios) |
|
|
6th
|
20/23 (0.870:1) |
|
5th
|
22/23 (0.957:1) |
|
4th
|
23/21 (1.095:1) |
|
3rd
|
28/21 (1.333:1) |
|
2nd
|
28/16 (1.750:1) |
|
1st
|
35/14 (2.500:1) |
| Transmission
Overall Ratios |
|
|
6th
|
4.772: 1 |
|
5th
|
5.249: 1 |
|
4th
|
6.006: 1 |
|
3rd
|
7.312: 1 |
|
2nd
|
9.599: 1 |
|
1st
|
13.713:1 |
| Theoretical Speed in
Gears at Redline |
|
|
6th
|
139 mph |
| 5th |
126 mph |
| 4th |
110 mph |
| 3rd |
91 mph |
| 2nd |
69 mph |
| 1st |
48 mph |
