Yamaha LB 70 Chappy - 1989 Specifications and Reviews

The 1989 Yamaha LB 70 Chappy is a lightweight two-stroke scooter designed for urban commuters and novice riders seeking affordable, economical transportation. Its compact 65cc engine delivers modest performance with a top speed of 72 km/h, making it ideal for city riding and short-distance travel. Known for reliability and low maintenance, the Chappy represents practical Japanese engineering for everyday mobility.

1989
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General information

CategoryScooter
Year1989
ModelYamaha LB 70 Chappy

Engine and Transmission Specifications

Exhaust systemsingle pipe with catalyzer
Greenhouse gases69.6 CO
Fuel consumption3.00 litres/100 km (33.3 km/l or 78.41 mpg)
Clutchautomatic constant mesh
Transmission type,final driveChain
GearboxAutomatic
Cooling systemAir
Lubrication systemAutolube
Ignitionmechanical
Fuel controlMembrane
Fuel systemCarburettor. Mikuni
Valves per cylinder2
Bore x stroke47.0 x 42.0 mm (1.9 x 1.7 inches)
Compression5.8:1
Max RPM6000
Top speed72.4 km/h (45.0 mph)
Torque5.90 Nm (0.6 kgf-m or 4.4 ft.lbs) @ 4000
Power4.80
Engine typeSingle cylinder, two-stroke
Capacity:65.00 ccm (3.97 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakesExpanding brake (drum brake)
Front brakesExpanding brake (drum brake)
Rear tyre dimensions4.00-8-4PR
Front tyre dimensions4.00-8-4PR
Rear suspensionmonoshock
Front suspensionstandard forks
Frame typeCrMo steel

Physical measures and capacities

Reserve fuel capacity1.00 litres (0.26 gallons)
Fuel capacity3.50 litres (0.92 gallons)
Wheelbase1,050 mm (41.3 inches)
Ground clearance135 mm (5.3 inches)
Overall width665 mm (26.2 inches)
Overall length1,565 mm (61.6 inches)
Overall height925 mm (36.4 inches)
Seat height710 mm (28.0 inches) If adjustable, lowest setting.
Power/weight ratio0.0658 HP/kg
Dry weight73.0 kg (160.9 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsyellow
StarterKick

Performance Profile & Rider Fit

4.8 hp
Peak Power
45 mph
Top Speed

Best For

Track2%
City55%
Cornering20%
Daily Riding30%
Touring5%
Passenger5%

Rider Profile

Best ForThis tiny minibike-style scooter is best suited to absolute beginners, children under supervision, or adults looking for a fun, low-stakes novelty ride.
PurposeIt's designed for short, playful runs around a yard, campsite, or quiet neighborhood rather than any serious transportation task.
Rider FitIts miniature dimensions, low seat height, and light weight make it easy to handle for smaller or lighter riders, but larger adults will feel cramped and comically oversized.
CharacterThe Chappy has a charming, go-kart-like personality with its knobby small wheels, monoshock rear, and simple automatic clutch making it approachable and unintimidating.
Not Ideal ForIt is not suitable for anyone wanting real speed, highway travel, long-distance comfort, or carrying a passenger.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

1989 Yamaha LB 70 Chappy Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 710mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 1989 Yamaha LB 70 Chappy, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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