Development
FJ1100
Yamaha Motor Company Ltd. released the predecessor to the FJ1200, the FJ1100 . in 1984 . The bike was popular, and competed well against others in the sport-touring class of motorcycles. This class is characterised by retaining sportiness while integrating more street-friendly riding characteristics, including good manoeuvrability as well as long distance comfort, such as a more upright seating configuration designed to reduce back strain and a large fairing to reduce fatigue from wind resistance. Emphasis is placed on a balance of utility and sport, rather than pure performance orientation. The machine was noticeably narrower than many contemporaries, Yamaha achieved this by placing the Alternator behind the cylinders instead of the more normal position on the end of the Crankshaft . [1]
FJ1200
In 1986, the decision was made by Yamaha to boost the performance of the FJ1100 by increasing cubic capacity and adding upgraded suspension and other components. The result was the FJ1200. Produced in three main successive versions (1TX, 3CV and 3XW) each updated version benefited from improvements to bodywork, front and rear suspension components, and the addition of an optional ABS-equipped version (FJ1200A) from 1991 until 1996 . when Yamaha discontinued the FJ1200 in the United Kingdom . The model was discontinued in the United States in 1993 . Market competitors during its production years included the BMW K100 . Suzuki’s 1100 Suzuki Katana and Kawasaki’s Ninja ZX-10 . [2]
Design
Engine
The FJ1200 uses a four Cylinder (engine) in-line layout and is air cooled. Sixteen valves are operated by a chain driven Double overhead camshaft . valve clearances are adjusted using shims. The four constant velocity Carburetor are mounted in a bank behind the cylinders and feed each cylinder through short intake Manifold (automotive engineering) . Four exhaust downpipes join a box below the engine where the gases are split to exit through two silencers.
The crankshaft is geared directly to the Clutch . no Balance shaft is used. Starting is by electric starter only. Lubrication is wet sump using a Gerotor pump, an oil radiator assists with cooling. [3] Both the FJ1100 and FJ1200 were fitted with an additional fuel vapour recovery system to comply with California emission regulations. [4]
Transmission
The FJ1200 uses a five speed sequential Close-ratio transmission Manual transmission . the gear shafts are only removable by splitting the crankcases. The clutch is of the wet, multiple-disc diaphagm spring type and is hydraulically operated. Final drive is by O-ring chain and Sprocket . A safety feature of the FJ1200 is that the engine ignition is cut if first gear is selected with the sidestand down, this is commonplace on modern motorcycles. [5]
Chassis
The Frame of the FJ1200 is manufactured from Steel box-section and uses a perimeter layout, the fairing and upper rear section use separate cylindrical tubing sub-frames. The rear Shock absorber is placed vertically behind the engine and connects to an Extrusion Aluminium alloy Swinging arm via several forged aluminium rocker arms.
The 17 front wheel is held between 41mm spring and oil damped Motorcycle fork . The FJ1100 and early FJ1200 models featured adjustable anti-dive units and a smaller Diameter 16 wheel. The FJ1100 and early FJ1200 used twin ventilated Disc brake for the front wheel with a single ventilated disc at the rear. FJ1200 models, 3CV 3XW, used solid front discs but retained the rear ventilated disc, front brake calipers were upgraded to a four piston design.
An Anti-lock braking system was used on the FJ1200A. A full fairing protects the rider, varying height windscreens were available as options. [6]
Electrical system
The FJ1200 features a standard 12 Volt electrical system. The alternator and starter motor are mounted behind the cylinders. Yamaha’s self cancelling indicator unit is used and a variable resistance Level sensor is used to monitor engine oil contents with associated warning lights.
A large fuel gauge is provided as is a low level warning light. Denso Capacitor discharge ignition is used in conjunction with two Ignition coil . The FJ1200 fuel reserve system used in later models is unusual in that when the fuel level reaches approximately 5 litres remaining ignition is cut to two cylinders giving the impression that the vehicle is running out of fuel, a reserve switch mounted in the fairing restores the cut cylinders allowing the rider to continue normally. [7] [8]
- 2009 Yamaha Star Roadliner Which Motorcycle For Me
- Yamaha GTS1000 A-Yamaha
- YAMAHA’S CRAZY CONCEPT BIKES: The Chivicker, Divide, Pocke, BMX, Tesseract…
- Yamaha FZR600 – Wikipedia, the free encyclopedia
- Yamaha does fuel cell scooters TheScooterScoop
