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Yamaha XJ650 Maxim

Yamaha XJ650 Maxim

FieldValue
nameYamaha XJ650 Maxim
image[[File:1982 XJ 650 Maxim left side view sport tourer.jpg250px1982 XJ 650 Maxim left side view sport tourer]]
caption1982 Yamaha XJ650 Maxim,XJ650RJ Seca (Made only in 1982)
akaMaxim 650
manufacturerYamaha
parent_companyYamaha Corporation
production1980–1983
predecessorYamaha XS 650 Special
classSport/Cruiser
engine653 cc air-cooled four-stroke inline-4, DOHC, 2 valves per cylinder
bore_stroke63 х 52.4 mm
compression9.2:1
top_speed122 mph
power73 hp @ 9000 rpm (claimed)
torque42 lbft @ 7200 rpm (claimed)
ignitiontransistorized
transmission5-speed
frametubular steel
suspensionFront: 36 mm Air assisted telescopic forks, 147 mm wheel travel
Rear:5-way adjustable spring preload, 97 mm wheel travel
brakesFront: Single 300 mm disc
Rear: drum
tiresFront: 3.25-H19
Rear:130/90-H16
seat_height29.3 inches
fuel_capacity13 liters/3.4 gal
relatedYamaha XJ750 Maxim

Rear:5-way adjustable spring preload, 97 mm wheel travel Rear: drum Rear:130/90-H16

The Yamaha XJ650 Maxim is a mid-size motorcycle by the Yamaha Motor Company introduced in 1980 as the Maxim I and produced through 1983. Yamaha designed the high-performance XJ650 as a brand-new four-cylinder with shaft drive, and built it specifically as a special cruiser. The XJ Maxim was the successor of the XS Special introduced in 1978.

History

Overview

1980 Yamaha XJ650 Maxim I

The 4 cylinder, air-cooled, twin-cam 650cc engine is housed in a cross-braced duplex steel tube frame. Yamaha made the engine narrower by locating the alternator behind the cylinder block and above the gearbox rather than on the end of the crankshaft. The Maxim had shaft drive. Contemporary reports praised the Maxim's performance and braking. Criticism was aimed at engine vibration and under-damped suspension. Succeeding Maxim models were refinements; the 1982 Maxim 650 had a more comfortable handlebar, an air-adjustable fork, and a more luxurious seat. A turbocharged variant, the XJ650 Seca Turbo, was featured in the 1983 James Bond film Never Say Never Again.

Cycle magazine said in 1982 "Three years later, after the wide proliferation of special styling, it's easy to forget what a landmark bike the Maxim was...The 650 was striking, controversial, sensational, and wildly successful in showrooms. Other companies have produced bodacious knock-offs of the 650 Maxim, imitations that suffer from excess. It's too bad the Maxim was obscured when manufacturers blanketed the market with cruisers. A decade down the road, the Maxim may well be a genuine classic of the 1980s — a bright idea that stood the test of time."

Engine/Drivetrain

Yamaha 653 cc DOHC-8 valves, inline-4
Yamaha shaft drive

The 1980 to 1983 XJ650 Maxim combined an air-cooled, 653 cc DOHC two valves per cylinder transverse inline-four engine and shaft drive. The engine employed a one-piece crankshaft with plain bearings and placed the alternator and starter behind the engine to minimize width. A chain drives the two overhead camshafts, which used shim-and-bucket adjustment. A second chain drives the oil pump located in the crankcase, while a third (Hy-Vo) chain spins the alternator. The power unit is fed by four Hitachi constant velocity carburetors and lit by electronic ignition. Four-into-two headers extracts the waste gases, which exit through two shortened mufflers. Hypoid gears and a shaft turns the rear wheel, with the shaft housing forming the left side swingarm.

References

References

  1. Salvadori, Clement. (November 12, 2012). "Retrospective: Yamaha XJ650RJ Seca 650: 1982". Rider magazine.
  2. "Total Motorcycle – 1982 Yamaha XJ 650 R Seca, Maxim, 1980-1986". Total Motorcycle.
  3. Cycle, 1982
  4. Quote-Cycle, 1982
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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