The Yamaha LB 70 Chappy motorcycle specifications include a 65 cc (3.97 cu in) engine, power of 4.8 hp (3.5 kW) @ 6,000 rpm, an automatic gearbox, and a listed weight of 73 kg (160.9 lb).
Key specifications
How the Yamaha LB 70 Chappy compares
This compares the motorcycle with all Yamaha models in this specifications database. The blue marker is this model and the grey line is the Yamaha database average.
About 91% lower than the Yamaha database average. Around the 9th percentile across Yamaha models.
About 88% lower than the Yamaha database average. Around the 8th percentile across Yamaha models.
About 10% lower than the Yamaha database average. Around the 17th percentile across Yamaha models.
About 73% smaller than the Yamaha database average. Around the 1st percentile across Yamaha models.
Yamaha database percentile rankings
Percentiles show where this motorcycle sits across the Yamaha specifications database. They are descriptive database rankings, not performance ratings.
4.8 hp — more powerful than about 9% of Yamaha models with power data.
65 cc — larger displacement than about 8% of Yamaha models.
710 mm — taller than about 17% of Yamaha models.
3.5 L — larger than about 1% of Yamaha fuel tanks in this database.
Dimensions compared with Yamaha average
Each measurement is compared with the average value across Yamaha models where that dimension is available.
1,565
2,082
25% below average.
665
823
19% below average.
925
1,172
21% below average.
1,050
1,416
26% below average.
710
793
10% below average.
135
181
25% below average.
Mechanical overview
Additional useful specifications
| Front tire size | 4.00-8-4PR |
|---|---|
| Rear tire size | 4.00-8-4PR |
| Estimated theoretical fuel range | 117 km |
| Power-to-weight ratio | 0.066 hp/kg |
| Power-to-weight | 65.8 hp/tonne |
| Specific power | 73.8 hp/L |
| Bore/stroke ratio | 1.12:1 (Oversquare) |
Model information
| Year released | 1989 |
|---|
Engine specifications
| Engine type | Single cylinder, two-stroke |
|---|---|
| Displacement | 65 cc (3.97 cu in) |
| Power | 4.8 hp (3.5 kW) @ 6,000 rpm |
| Torque | 5.9 Nm (0.6 kgf-m or 4.4 ft.lbs) @ 4,000 rpm |
| Bore × stroke | 47.0 x 42 mm (1.9 x 1.7 inches) |
| Compression ratio | 5.8:1 |
| Valves per cylinder | 2 |
| Cooling system | Air |
| Fuel system | Carburettor. Mikuni |
| Fuel control | Membrane |
| Ignition | mechanical |
| Starter | Kick |
| Lubrication | Autolube |
Transmission and drivetrain
| Gearbox | Automatic |
|---|---|
| Final drive | Chain (final drive) |
| Clutch | automatic constant mesh |
Chassis and suspension
| Frame | CrMo steel |
|---|---|
| Front suspension | standard forks |
| Rear suspension | monoshock |
Brakes, wheels and tires
| Front brakes | Expanding brake (drum brake) |
|---|---|
| Rear brakes | Expanding brake (drum brake) |
| Front tire | 4.00-8-4PR |
| Rear tire | 4.00-8-4PR |
Dimensions and weight
| Dry weight | 73 kg (160.9 lb) |
|---|---|
| Seat height | 710 mm (28.0 inches) |
| Overall length | 1,565 mm (61.6 inches) |
| Overall width | 665 mm (26.2 inches) |
| Overall height | 925 mm (36.4 inches) |
| Wheelbase | 1,050 mm (41.3 inches) |
| Ground clearance | 135 mm (5.3 inches) |
Fuel and emissions
| Fuel capacity | 3.50 L (0.92 US gal) |
|---|---|
| Reserve fuel capacity | 1.00 L (0.26 US gal) |
| Fuel consumption | 3.00 L/100 km (33.3 km/l or 78.41 mpg) |
| Greenhouse gases | 69.6 CO 2 g/km. (CO2 – Carbon dioxide emission) |
Performance
| Top speed | 72.4 km/h (45.0 mph) |
|---|---|
| Power/weight ratio | 0.0658 hp/kg |
Other specifications
| Color options | yellow |
|---|---|
| Exhaust system | single pipe with catalyzer |
| Comments | Real nice mini chopper |
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Yamaha models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Yamaha information before relying on them. Visit the official Yamaha website.