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The Yamaha brand
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Yamaha 1979
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RD 400 1979
Motorcycle description sheet
Yamaha
RD 400
1979
presentation
Key facts
Specifications
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Prices
1 400 €
in France
(Motoplanete estimate)
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RD 400 1978
Model sold in
1976
1977
1978
1979
1980
Performance
Max speed
: environ 175 km/h (108,70 mph)
Specifications
Yamaha RD 400 1979
Chassis
Frame : Double tubular steel cradle
Fuel capacity : 16,50 liters (4,36 US gallons)
Seat height : 800 mm (31,50 in)
Length : 1 995 mm (78,54 in)
Width : 850 mm (33,46 in)
Min height : 1 105 mm (43,50 in)
Wheelbase : 1 320 mm (51,97 in)
Dry weight : 157 kg
Curb mass : 175 kg
Front axle
Telescopic fork Ø 35 mm (1.38 in), Wheel travel : 120 mm (4,72 in)
Braking 1 disc Ø 267 mm (10.51 in), single-piston caliper
Front wheel : 3 / 25 - 18
→ Order this type of tire
Transmission
6 stage gearbox , manual
Secondary by chain
Rear axle
2 amortisseurs latéraux, Wheel travel : 80 mm (3,15 in)
Braking 1 disc Ø 267 mm (10.51 in), single-piston caliper
Rear wheel : 3 / 50 - 18
→ Order this type of tire
Motor
two-cylinder in-line
, 2 strokes
Cooling system : by air
2 carburetors Ø 28 mm
398 cc (Bore x stroke: 64 x 62 mm)
44 ch (43,40 hp)
to 7 000 rpm
4,20 mkg
to 7 000 rpm
Power-to-weight ratio
: 3.62 kg/ch
Weight / torque ratio
: 37.38 kg/mkg
Compression : 6.2 : 1
exhaust
motor
fluid
electricity
filtration
braking
Chain kit
Gallery
Models
1976
1977
1978
1979
1980
Competitors
Suzuki GT 380 1979
Find others
Roadster of 1979
Compare
Compare the RD 400 to its competitors
Torque
Yamaha RD 400 1979 : 4.2 mkg
Suzuki GT 380 1979 : 3.9 mkg
Power
Yamaha RD 400 1979 : 44 ch (43,40 hp)
Suzuki GT 380 1979 : 37 ch (36,50 hp)
Power-to-Weight ratio
Yamaha RD 400 1979 : 3.62 kg/ch
Suzuki GT 380 1979 : 5.01 kg/ch
Torque-to-Weight ratio
Yamaha RD 400 1979 : 37.38 kg/mkg
Suzuki GT 380 1979 : 46.92 kg/mkg
Speed
Yamaha RD 400 1979 : 175 km/h (108,70 mph)
Suzuki GT 380 1979 : 170 km/h (105,60 mph)
Comparison
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Yamaha RD 400 1979
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Essentials
The safety of your rider and the performance of your motorcycle are paramount. At our partner 'Revzilla', you'll find everything you need, from equipment to spare parts, to maintain your machine to perfection.
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