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Yamaha RD250 - generations and specs | MOTOVULKAN
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RD250
Yamaha · Model
— RD250
RD250
2 generations
1973 - 1979
·
Naked
FRAME · —
1973 - 1974
247cc · 30 hp · 1973-1974
FRAME · 1A4
1976 - 1979
247cc · 30 hp · 1976-1979
Yamaha RD250 1976-1979
About generation 1A4
1976-1979
Years
1976 - 1979
Frame codes
1A4
Class
Naked
Specifications
10 groups
General
3
Market
Japanese domestic (JDM)
Model code
1A4
Manufacturer
YAMAHA
Engine
16
Bore
54 mm
Cooling
Air-cooled
Power
30 hp
Fuel type
Regular (low-octane)
Power RPM
7,500 rpm
Stroke
54 mm
Cylinders
2
Torque RPM
7,000 rpm
Engine code
1A4
Fuel system
Carburetor
Engine type
2-stroke
Torque (kgf·m)
3 kgf·m
Lubrication
Separate oil injection (2T)
Cylinder layout
Inline
Displacement
247 cc
Compression ratio
6.7
Transmission
8
Type
Return shift
Gears
6
Clutch
Wet multi-plate
Shift type
Foot shift
Final drive
Chain
Gear ratios
2.571 / 1.777 / 1.318 / 1.083 / 0.961 / 0.888
Primary reduction
3.238
Secondary reduction
2.352
Chassis
15
Frame
Double cradle
Rear tire
3.25-18
Front tire
3.00-18
Rear brake
Hydraulic disc
Front brake
Hydraulic disc
Rear rim width
2.15
Rear tire type
Tube type
Front fork type
Conventional
Front rim width
1.85
Front tire type
Tube type
Rear shocks
2
Rear suspension
Swingarm
Front suspension
Telescopic fork
Rear tire construction
Bias
Front tire construction
Bias
Dimensions
9
Trail
106 mm
Width
770 mm
Height
1,065 mm
Length
1,995 mm
Rake
27.5 °
Wheelbase
1,315 mm
Seat height
790 mm
Ground clearance
145 mm
Turning radius
2.4 m
Weight
2
Dry weight
150 kg
Seats
2
Capacities
2
Fuel tank
16.5 l
2T oil tank
1.6 l
Electrical
7
Battery
12N5.5-3B
Starter
Kick starter
Spark plug
B8ES
Spark plugs
2
Battery capacity
12V-5.5Ah
Taillight rating
27W/8W
Headlight rating (high)
45W/45W
Instruments
2
Tachometer
Yes
Speedometer
Analog
Performance
5
Range
528 km
Rear tire pressure
2.25 kgf/cm²
Front tire pressure
2 kgf/cm²
Measure standard
At 60 km/h
Fuel economy
3.1 L/100km
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