Yamaha MR50 1980 - Specifications & Review

MR50

Article Complete Info

Articleid527908
CategoryEnduro-offroad
MakeYamaha
ModelMR50
Year1980

Chassis, Suspension, Brakes & Wheels

FrametypeSemi-double cradle, steel tubular
FrontbrakesExpanding brake (drum brake). Mechanical drum brake Leading - Trailing
Frontbrakesdiameter110 mm (4.3 inches)
FrontsuspensionTelescopic
Fronttyre2.50-18-4PR
Rake27.3°
RearbrakesExpanding brake (drum brake). Mechanical drum brake Leading - Trailing
Rearbrakesdiameter110 mm (4.3 inches)
RearsuspensionSwing arm monocross suspension
Reartyre3.00-16-4PR
SeatPlain
Trail94 mm (3.7 inches)
WheelsChrome multi-spoke

Engine & Transmission

Borexstroke40.0 x 39.7 mm (1.6 x 1.6 inches)
ClutchWet multi-disc
Compression6.0:1
CoolingsystemAir
Displacement49.00 ccm (2.99 cubic inches)
EnginedetailsSingle cylinder, two-stroke
Exhaustsystemsingle pipe
FuelsystemCarburettor. VM16SH carburetor
IgnitionMagneto ignition
Topspeed100.0 km/h (62.1 mph)

Other Specifications

CarryingcapacityChrome rear pack rack.
ColoroptionsYellow/Black and Grey/Black
FactorywarrantyJapan
InstrumentsSpeedometer, tachometer, neutral, flasher and oil warning
LightHeadlight 6v 25/25W and taillight 6v 17/5.3W
StarterKick

Physical Measures & Capacities

Dryweight70.0 kg (154.3 pounds)
Fuelcapacity6.50 litres (1.72 gallons)
Groundclearance205 mm (8.1 inches)
Oilcapacity1.30 litres (0.09 quarts)
Overallheight1,020 mm (40.2 inches)
Overalllength1,835 mm (72.2 inches)
Overallwidth770 mm (30.3 inches)
Seatheight740 mm (29.1 inches) If adjustable, lowest setting.
Weightincloilgasetc77.0 kg (169.8 pounds)

About Yamaha MR50 1980

Introducing the 1980 Yamaha MR50: The Mini Beast of Enduro

The 1980 Yamaha MR50 is a remarkable entry in the world of off-road motorcycles, designed to cater to young riders and those looking for a lightweight, fun, and nimble machine. Positioned as a mini enduro bike, the MR50 sets itself apart with its blend of practicality and spirited performance, making it a perfect choice for both budding enthusiasts and seasoned riders seeking a compact companion for off-road adventures. With its eye-catching yellow and black or grey and black color schemes, this motorcycle not only delivers on performance but also stands out in any riding environment.

Engine Performance and Riding Characteristics

At the heart of the MR50 lies a spirited 49cc single-cylinder, two-stroke engine that packs a punch despite its small displacement. With a compression ratio of 6.0:1 and a bore and stroke measurement of 40.0 x 39.7 mm, this engine is designed to deliver a top speed of 100 km/h (62.1 mph), providing an exhilarating ride for its class. The VM16SH carburetor ensures efficient fuel delivery, while the air-cooled system keeps the engine at optimal temperatures during those longer rides. The MR50’s lightweight build, weighing in at just 70 kg (154.3 pounds), combined with its well-engineered semi-double cradle frame and telescopic front suspension, results in agile handling and a responsive ride that can conquer a variety of terrains with ease.

Key Features and Technology

The 1980 MR50 is equipped with features that reflect Yamaha's commitment to quality and innovation. The bike's robust wet multi-disc clutch and mechanical drum brakes—both front and rear—provide reliability and effective stopping power, contributing to rider confidence on rugged trails. With a comfortable seat height of 740 mm (29.1 inches) and generous ground clearance of 205 mm (8.1 inches), the MR50 is accessible to a wide range of riders, ensuring a comfortable experience whether you're tackling steep inclines or navigating through obstacles. The kick-starter mechanism adds a touch of classic charm, perfect for those who appreciate the simplicity of traditional motorcycles.

Pros and Cons of the 1980 Yamaha MR50

Pros:

  1. Lightweight and Agile: At just 70 kg, it's perfect for young riders or those needing a nimble bike for off-road adventures.
  2. Strong Performance: The 49cc engine offers impressive speed and power for its displacement, making it a thrilling ride.
  3. Durable Design: The semi-double cradle frame and quality suspension ensure stability and reliability on various terrains.

Cons:

  1. Limited Power for Advanced Riders: While great for beginners, experienced riders may find the power lacking for more aggressive off-road use.
  2. Drum Brakes: The mechanical drum brakes may not provide the same level of performance as modern disc brakes, especially in wet conditions.
  3. Kick Start Only: The absence of an electric start may be cumbersome for some, especially in tricky situations.

In summary, the 1980 Yamaha MR50 stands as a testament to Yamaha's dedication to producing fun, accessible, and durable motorcycles for the off-road community. Whether you're just starting out or looking for a lightweight option for your weekend rides, the MR50 is sure to leave a lasting impression.

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