Yamaha FJ1200
Encyclopedia
The Yamaha FJ1100 and FJ1200 are sport touring motorcycles that were produced by Yamaha
between 1984 and 1996.
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
.
-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 K100RS
, Suzuki's 1100 Katana
and Kawasaki's Ninja ZX-10.
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 carburettors
are mounted in a bank behind the cylinders and feed each cylinder through short intake manifolds
.
Four exhaust downpipes join a box below the engine where the gases are split to exit through two silencers (mufflers).
The crankshaft is geared directly to the clutch
, no counter balancer shaft
is used.
Starting is by electric starter only. Lubrication is wet sump using a trochoid
pump; an oil radiator assists with cooling. Both the FJ1100 and FJ1200 were fitted with an additional fuel vapour recovery system to comply with California
emission regulations.
gearbox
, the gear shafts are only removable by splitting the crankcase.
The clutch is of the wet, multiple-disc diaphragm spring type and is hydraulically operated. Final drive is by O-ring chain
and sprocket
s.
of the FJ1200 is manufactured from mild 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 a swinging arm made from extruded
aluminium alloy
(note: later 3XW models have mild steel swinging arm) via several forged aluminium rocker arms. The 17-inch front wheel is held between 41 mm spring and oil damped forks
. The FJ1100 and early FJ1200 models featured adjustable anti-dive units and a smaller diameter 16-inch wheel.
The FJ1100 and early FJ1200 used twin ventilated disc brake
s 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 fixed windscreens were available as options.
electrical system. The alternator and starter motor are mounted behind the cylinders. Nippondenso
Transistor Controlled Ignition (TCI)
is used in conjunction with two coils
. Yamaha's self cancelling indicator unit is used and a variable resistance gauging system
is used to monitor engine oil contents with associated warning lights. A large fuel gauge is provided as is a low fuel level warning light. A digital clock is also fitted. A safety feature of the FJ1200 is that the engine ignition is cut if first gear is selected with the sidestand down, this is now commonplace on modern motorcycles.
Yamaha Motor Company
, is a Japanese motorized vehicle-producing company. Yamaha Motor is part of Yamaha Corporation and its headquarter is located in Iwata, Shizuoka. Along with expanding Yamaha Corporation into the world's biggest piano maker, then Yamaha CEO Genichi Kawakami took Yamaha into the field of motorized...
between 1984 and 1996.
FJ1100
Yamaha released the FJ1100 for model years 1984 and 1985. 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
Alternator
An alternator is an electromechanical device that converts mechanical energy to electrical energy in the form of alternating current.Most alternators use a rotating magnetic field but linear alternators are occasionally used...
behind the cylinders instead of the more normal position on the end of the crankshaft
Crankshaft
The crankshaft, sometimes casually abbreviated to crank, is the part of an engine which translates reciprocating linear piston motion into rotation...
.
FJ1200
In 1986 Yamaha decided to upgrade the FJ1100 by increasing the engine displacement slightly and adding upgraded suspension and other components. The result was the FJ1200. Although the peak power output was unchanged at 125 bhp, the FJ1200 had more low- to mid-range torque. The FJ1200 was produced in three main successive versions (1TX, 3CV and 3XW) each updated version benefitting from improvements to bodywork, front and rear suspension components, and the addition of an optional ABSAnti-lock braking system
An anti-lock braking system is a safety system that allows the wheels on a motor vehicle to continue interacting tractively with the road surface as directed by driver steering inputs while braking, preventing the wheels from locking up and therefore avoiding skidding.An ABS generally offers...
-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 K100RS
BMW K100
The BMW K100 is a family of four-cylinder 987 cc motorcycles that were manufactured by BMW from 1983 to 1992.-Background:As the 1970s came to an end, BMW faced three problems from developing its flat-twin boxer engine further:...
, Suzuki's 1100 Katana
Suzuki Katana
The original Suzuki Katana was a then-novel sport motorcycle designed in 1979–1980 by the southern Bavarian firm of Target Design at the request of Suzuki of Germany specifically for their market....
and Kawasaki's Ninja ZX-10.
Engine
The FJ1200 uses a four cylinderCylinder (engine)
A cylinder is the central working part of a reciprocating engine or pump, the space in which a piston travels. Multiple cylinders are commonly arranged side by side in a bank, or engine block, which is typically cast from aluminum or cast iron before receiving precision machine work...
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 carburettors
Carburetor
A carburetor , carburettor, or carburetter is a device that blends air and fuel for an internal combustion engine. It is sometimes shortened to carb in North America and the United Kingdom....
are mounted in a bank behind the cylinders and feed each cylinder through short intake manifolds
Inlet manifold
In automotive engineering, an inlet manifold or intake manifold is the part of an engine that supplies the fuel/air mixture to the cylinders...
.
Four exhaust downpipes join a box below the engine where the gases are split to exit through two silencers (mufflers).
The crankshaft is geared directly to the clutch
Clutch
A clutch is a mechanical device which provides for the transmission of power from one component to another...
, no counter balancer shaft
Balance shaft
In piston engine engineering, a balance shaft is an eccentric weighted shaft which offsets vibrations in engine designs that are not inherently balanced...
is used.
Starting is by electric starter only. Lubrication is wet sump using a trochoid
Gerotor
A gerotor is a positive displacement pumping unit. The name gerotor is derived from "Generated Rotor". A gerotor unit consists of an inner and outer rotor. The inner rotor has N teeth, and the outer rotor has N+1 teeth. The inner rotor is located off-center and both rotors rotate...
pump; an oil radiator assists with cooling. Both the FJ1100 and FJ1200 were fitted with an additional fuel vapour recovery system to comply with California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
emission regulations.
Transmission
The FJ1200 uses a five-speed sequential constant-mesh close ratioClose-ratio transmission
A close-ratio transmission is a transmission in which there is little difference between the gear ratios of the gears. Consequently, note that the word close implies "near", not "shut." The gear ratio numbers are in a smaller numeric range, hence closer together.In the context of close-ratio...
gearbox
Manual transmission
A manual transmission, also known as a manual gearbox or standard transmission is a type of transmission used in motor vehicle applications...
, the gear shafts are only removable by splitting the crankcase.
The clutch is of the wet, multiple-disc diaphragm spring type and is hydraulically operated. Final drive is by O-ring chain
O-ring chain
The o-ring chain is a specialized type of roller chain used in the transmission of mechanical power from one sprocket to another.- Construction :...
and sprocket
Sprocket
A sprocket or sprocket-wheel is a profiled wheel with teeth, cogs, or even sprockets that mesh with a chain, track or other perforated or indented material. The name 'sprocket' applies generally to any wheel upon which are radial projections that engage a chain passing over it...
s.
Chassis
The frameMotorcycle frame
A motorcycle frame includes the head tube that holds the front fork and allows it to pivot. Some motorcycles include the engine as a load-bearing, stressed member. The rear suspension is an integral component in the design. Traditionally frames have been steel, but titanium, aluminium, magnesium,...
of the FJ1200 is manufactured from mild steel
Steel
Steel is an alloy that consists mostly of iron and has a carbon content between 0.2% and 2.1% by weight, depending on the grade. Carbon is the most common alloying material for iron, but various other alloying elements are used, such as manganese, chromium, vanadium, and tungsten...
box-section and uses a perimeter layout, the fairing and upper rear section use separate cylindrical tubing sub-frames. The rear shock absorber
Shock absorber
A shock absorber is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. It is a type of dashpot.-Nomenclature:...
is placed vertically behind the engine and connects to a swinging arm made from extruded
Extrusion
Extrusion is a process used to create objects of a fixed cross-sectional profile. A material is pushed or drawn through a die of the desired cross-section...
aluminium alloy
Aluminium alloy
Aluminium alloys are alloys in which aluminium is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon and zinc. There are two principal classifications, namely casting alloys and wrought alloys, both of which are further subdivided into the categories...
(note: later 3XW models have mild steel swinging arm) via several forged aluminium rocker arms. The 17-inch front wheel is held between 41 mm spring and oil damped forks
Motorcycle fork
A motorcycle fork connects a motorcycle's front wheel and axle to its frame, typically via a pair of triple clamps. It typically incorporates the front suspension and front brake, and allows the bike to be steered via handlebars attached to the top clamp....
. The FJ1100 and early FJ1200 models featured adjustable anti-dive units and a smaller diameter 16-inch wheel.
The FJ1100 and early FJ1200 used twin ventilated disc brake
Disc brake
The disc brake or disk brake is a device for slowing or stopping the rotation of a wheel while it is in motion.A brake disc is usually made of cast iron, but may in some cases be made of composites such as reinforced carbon–carbon or ceramic matrix composites. This is connected to the wheel and/or...
s 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
Anti-lock braking system
An anti-lock braking system is a safety system that allows the wheels on a motor vehicle to continue interacting tractively with the road surface as directed by driver steering inputs while braking, preventing the wheels from locking up and therefore avoiding skidding.An ABS generally offers...
was used on the FJ1200A. A full fairing protects the rider, varying height fixed windscreens were available as options.
Electrical system
The FJ1200 features a standard 12 voltVolt
The volt is the SI derived unit for electric potential, electric potential difference, and electromotive force. The volt is named in honor of the Italian physicist Alessandro Volta , who invented the voltaic pile, possibly the first chemical battery.- Definition :A single volt is defined as the...
electrical system. The alternator and starter motor are mounted behind the cylinders. Nippondenso
DENSO
is a global automotive components manufacturer headquartered in the city of Kariya, Aichi Prefecture, Japan. Established December 16, 1949 as , in 1996 the company became DENSO Corporation worldwide...
Transistor Controlled Ignition (TCI)
Capacitor discharge ignition
Capacitor discharge ignition or thyristor ignition is a type of automotive electronic ignition system which is widely used in outboard motors, motorcycles, lawn mowers, chainsaws, small engines, turbine-powered aircraft, and some cars...
is used in conjunction with two coils
Ignition coil
An ignition coil is an induction coil in an automobile's ignition system which transforms the battery's 12 volts to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel...
. Yamaha's self cancelling indicator unit is used and a variable resistance gauging system
Level sensor
Level sensors detect the level of substances that flow, including liquids, slurries, granular materials, and powders. Fluids and fluidized solids flow to become essentially level in their containers because of gravity whereas most bulk solids pile at an angle of repose to a peak...
is used to monitor engine oil contents with associated warning lights. A large fuel gauge is provided as is a low fuel level warning light. A digital clock is also fitted. A safety feature of the FJ1200 is that the engine ignition is cut if first gear is selected with the sidestand down, this is now commonplace on modern motorcycles.
Specifications
| FJ1100 | FJ1200 | |
|---|---|---|
| Engine | 1,097 cc (67 cu in), 4-stroke, four-cylinder, air-cooled, in-line | 1,188 cc (72.5 cu in), 4-stroke, four-cylinder, air-cooled, in-line |
| Bore Stroke | 74 millimetre | 77 millimetre |
| Compression Ratio | 9.5:1 | 9.7:1 |
| Fuel System | Mikuni BS36 36 mm carburettor x 4 | Mikuni BS36 36 mm carburettor x 4 |
| Fuel Tank Capacity | 24.5 l (51.8 US pt) | 22 l (46.5 US pt) |
| Lubrication | Wet sump | |
| Ignition | TCI (Analogue) | TCI (Analogue) 1986–1987 / TCI (Digital) 1988–1996 |
| Transmission | 5-speed, constant mesh | |
| Final Drive | Chain | |
| Overall Length | 2230 mm (87.8 in) | 2235 mm (88 in) |
| Overall Width | 730 mm (28.7 in) | 775 mm (30.5 in) |
| Overall Height | 1230 mm (48.4 in) | 1245 mm (49 in) |
| Seat Height | 780 mm (30.7 in) | 790 mm (31.1 in) |
| Ground Clearance | 140 mm (5.5 in) | |
| Wheelbase | 1490 mm (58.7 in) | 1495 mm (58.9 in) |
| Weight incl. oil, full fuel tank, etc. | 252 kg (555.6 lb) | 266 kg (586.4 lb) |
| Suspension Front | Telescopic, coil spring, adjustable spring preload, brake linked anti-dive system | Telescopic, coil spring, adjustable spring preload, adjustable rebound damping |
| Suspension Rear | Link-type, gas/oil damped, | Link-type, gas/oil damped, 8-way adjustable spring preload, 12-way adjustable rebound damping |
| Brakes Front | Dual hydraulic disc | |
| Brakes Rear | Single hydraulic disc | |
| Tires Front | 120/80-VR16 (through 1987) 120/70-VR17 (1988 on) | |
| Tires Rear | 150/80-VR16 | |