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 |