The YX600 Radian is a sport/touring motorcycle manufactured by the Yamaha Motor Company between the years of 1986–1990. Except for the suspension, the rest of the Radian was a parts-bin motorcycle and came equipped with a slightly detuned for mid and low-end torque version of air-cooled, inline-4 which came from the Yamaha XJ600 that was also along with the Radian used in the Yamaha FZ-600 Sport Motorcycle (precursor of Yamaha's FZR series of performance bikes), as well as smaller carburetors and frame from the 550 Maxim. Cycle World obtained for the Radian a 1/4 mi. time of 12.76 @ and acceleration at 3.8 seconds.
Specifications
Overall length 2,075 mm (81.7 in) Overall width 770 mm (30.3 in) Overall height 1,095 mm (43.1 in) Model 1UJ (YX600S), 1UL (YX600SC) Displacement 598 cc Bore x Stroke 58.5 x 55.7 mm (2.3 x 2.2 in) Compression ratio 10.0 : 1 Starting system electric starter Lubrication system Wet sump Engine oil capacity (total amount) 2.9 L (2.5 Imp qt, 3.1 US qt) Fuel tank capacity 12 L (2.6 Imp gal, 3.2 US gal) Fuel reserve amount 2.5 L (0.5 Imp gal, 0.7 US gal) Carburetor type/manufacturer BS30 x 4/MIKUNI Clutch type Wet, multi-disc Transmission - Primary reduction system Chain, Gear Transmission - Secondary reduction system Chain drive Transmission type Constant mesh 6-speed Frame type Double cradle Caster angle 27° Trail 128 mm (5.04 in) Tire size (front) 110/90-16-59H Tire size (rear) 130/90-16 67H Brake type (front) Dual, disk brake Brake type (rear) Drum brake Suspension (front) Telescopic fork Suspension (rear) Swing arm Shock absorber (front) Coil spring, oil damper Shock absorber (rear) Coil spring, oil damper Wheel travel (front) 140 mm (5.5 in) Wheel travel (rear) 98 mm (3.9 in) Ignition system TCI Generator system AC generator Battery type/capacity 12N 12A-4A/12V 12AH
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