Difference between revisions of "Yamaha GT80"

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{{DISPLAYTITLE:{{PAGENAME}}: history, specs, pictures}}
{{DISPLAYTITLE:{{PAGENAME}}: history, specs, pictures}}
{{Motorcycle
{{Motorcycle
|name            = '''Yamaha GT80'''
|name            = Yamaha GT80
|photo=1973-Yamaha-GTMX-Silver-5282-0.jpg
|photo=1973-Yamaha-GTMX-Silver-5282-0.jpg
|aka              = GT80/MX
|aka              = GT80/MX
|manufacturer    = [[Yamaha]]
|manufacturer    = Yamaha
|parent_company  =
|parent_company  =
|production      = 1973 - 1980
|production      = 1973 - 1980
Line 10: Line 10:
|predecessor      =
|predecessor      =
|successor        =
|successor        =
|class            = [[Enduro]]
|class            = Enduro
|engine          = single cylinder, two-stroke
|engine          = single cylinder, two-stroke
|bore_stroke      = 47.0mm x 42.0mm
|bore_stroke      = 47.0mm x 42.0mm
Line 22: Line 22:
|battery          = {{battery|YUASA 6N4-2A-5}} '73-80 <ref name="wps_street_2019"/>
|battery          = {{battery|YUASA 6N4-2A-5}} '73-80 <ref name="wps_street_2019"/>
|transmission    = Gear box: 4-speed <br>
|transmission    = Gear box: 4-speed <br>
Final Drive: [[chain]] <br>
Clutch: wet plate <br>
Clutch: wet plate <br>
 
|final_drive      = {{chain|420x}}
|frame            =
|frame            =
|suspension      =Front: inverted forks <br>
|suspension      =Front: inverted forks <br>
Line 41: Line 40:
|fuel_capacity    = 1.3 Gallon (4.92 Liters)
|fuel_capacity    = 1.3 Gallon (4.92 Liters)
|oil_capacity    =
|oil_capacity    =
|recommended_oil=Yamalube 10w-40
|fuel_consumption =
|fuel_consumption =
|turning_radius  =
|turning_radius  =

Latest revision as of 20:06, 23 November 2019

1973-Yamaha-GTMX-Silver-5282-0.jpg
Yamaha GT80
Manufacturer
Also called GT80/MX
Production 1973 - 1980
Class Enduro
Engine
single cylinder, two-stroke
Bore / Stroke 47.0mm x 42.0mm
Top Speed 57 mph (91 km/h)
Torque 4.5 ft/lbs (6.1 Nm) @ 7200RPM
Fuel System carburetor. teikei
Ignition points type ignition
Spark Plug NGK B7HS '73-80 [1]
Battery YUASA 6N4-2A-5 '73-80 [1]
Transmission Gear box: 4-speed
Clutch: wet plate
Final Drive Chain: 420x
Suspension Front: inverted forks
Rear: non-adjustable dual shock
Brakes Front: expanding brake (drum brake)
Rear: expanding brake (drum brake)
Front Tire 2.50-15 '73-80 [1]
Rear Tire 2.75-14 '73-80 [1]
Weight 130.07 pounds (59.0 Kg) (dry), 60.3 kg (wet)
Recommended Oil Yamalube 10w-40
Fuel Capacity 1.3 Gallon (4.92 Liters)
Manuals Service Manual


The Yamaha GT80 B was a single cylinder, two-stroke standard produced by Yamaha in 1975. It could reach a top speed of 57 mph (91 km/h). Max torque was 4.5 ft/lbs (6.1 Nm) @ 7200 RPM.

Engine[edit | edit source]

The engine was a air cooled single cylinder, two-stroke. A 47.0mm bore x 42.0mm stroke result in a displacement of just 72.0 cubic centimeters.

Drive[edit | edit source]

The bike has a 4-speed transmission. Power was moderated via the wet plate.

Chassis[edit | edit source]

It came with a 2.50-15 front tire and a 2.75-14 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The front suspension was a inverted forks while the rear was equipped with a non-adjustable dual shock. The GT80 B was fitted with a 1.3 Gallon (4.92 Liters) fuel tank. The bike weighed just 130.07 pounds (59.0 Kg).




1973[edit | edit source]



1978[edit | edit source]


1980[edit | edit source]

1980 Yamaha GT80 in Red
1980 Yamaha GT80 in Red
1980 Yamaha GT80 in Red



1981[edit | edit source]

1981 Yamaha GT80 in Blue
1981 Yamaha GT80 in Blue
1981 Yamaha GT80 in Blue
1981 Yamaha GT80 in Blue


References[edit | edit source]

  1. 1.0 1.1 1.2 1.3 2019 Western Power Sports Catalog. Western Power Sports. 2019.