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Difference between revisions of "Yamaha YR1"
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[[Category:Yamaha motorcycles]] | [[Category:Yamaha motorcycles]] | ||
{{Infobox Motorcycle | |||
|name = '''Yamaha YR1''' | |||
|image = | |||
|aka = | |||
|manufacturer = [[Yamaha]] | |||
|parent_company = | |||
|production = 1967 | |||
|model_year = | |||
|predecessor = | |||
|successor = | |||
|class = [[Naked]] | |||
|engine = Twin cylinder, two stroke, air cooled | |||
|bore_stroke = 61.0mm x 61.0mm | |||
|compression = 7.5:1 | |||
|top_speed = | |||
|power = 36.48 HP (27.2 KW) @ 7500RPM | |||
|torque = 23.6 ft/lbs (32.0 Nm) @ 7000RPM | |||
|ignition = | |||
|spark_plug = | |||
|battery = | |||
|transmission = Gear box: 5-Speed <br> | |||
Final Drive: Chain <br> | |||
Clutch: Wet multi-plate <br> | |||
|frame = | |||
|suspension = | |||
|brakes =Front: Drum <br>Rear: Drum | |||
|front_tire = {{tire|3.00-18}} | |||
|rear_tire = {{tire|3.50-18}} | |||
|rake_trail = | |||
|wheelbase = 52.6 inches (1336 mm) | |||
|length = 81.1 inches (2060 mm) | |||
|width = 28.9 inches (734 mm) | |||
|height = | |||
|seat_height = | |||
|dry_weight = | |||
|wet_weight = 157.0 kg | |||
|fuel_capacity = 1.06 Gallon (4.00 Liters) | |||
|oil_capacity = | |||
|fuel_consumption = | |||
|turning_radius = | |||
|related = | |||
|competition = | |||
}} | |||
The '''[[Yamaha]] YR1''' was a Twin cylinder, two stroke, [[air cooled]] Naked [[motorcycle]] produced by [[Yamaha]] in 1967. Max [[torque]] was 23.6 ft/lbs (32.0 Nm) @ 7000 RPM. Claimed [[horsepower]] was 36.48 HP (27.2 KW) @ 7500 RPM. | |||
==Engine== | |||
A 61.0mm [[bore]] x 61.0mm [[stroke]] result in a [[displacement]] of just 347.0 cubic centimeters. | |||
==Drive== | |||
The bike has a 5-Speed transmission. Power was moderated via the Wet multi-plate. | |||
==Chassis== | |||
It came with a 3.00-18 front [[tire]] and a 3.50-18 rear tire. Stopping was achieved via Drum in the front and a Drum in the rear. The YR1 was fitted with a 1.06 Gallon (4.00 Liters) fuel tank. The wheelbase was 52.6 inches (1336 mm) long. | |||
==1967 - 1970 Yamaha YR1== | |||
[[File:yamaha-yr1-1967-1970-2.jpg|600px|1967 - 1970 Yamaha YR1]] | |||
[[File:yamaha-yr1-1967-1970-1.jpg|600px|1967 - 1970 Yamaha YR1]] | |||
[[File:yamaha-yr1-1967-1970-0.jpg|600px|1967 - 1970 Yamaha YR1]] | |||
This bike was the largest in the line that year. It was the first 350 cc they had build. In 1967 the engine was the first to use aluminium cylinder with cast iron sleeves. This bike it was equipped with a Twin cylinder, two-stroke, five speed. | |||
[[Category:Naked motorcycles]] | |||
[[Category:Yamaha motorcycles]] | |||
[[Category:1960s motorcycles]] | |||
[[Category:Motorcycles needing images]] | |||