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The original "Devil's Lightswitch" - a gorgeous, factory-stock European-spec RZ500 two-stroke V4
This first-year model is extremely rare and valuable, one of only a handful of big-bore RZ's that have were grey-market imported to the US in the late 1980's
it is in unrestored, showroom condition has has only 13,000 kilometers since new
A full-blown GP replica, the V4 two-stroke has four expansion chambers, producing a terrifying 80hp with an extremely light chassis and a turbo-like hit.
The Yamaha RD500LC is a high-performance, two-stroke sports motorcycle, also known as the RZ500 in Canada and Australia. A lightened but detuned version known as the RZV500R was developed for the Japanese home market. Strict United States Environmental Protection Agency regulations meant that the RZ500 was not available for sale in that country. Produced for a short period between 1984 and 1986 it has become a sought after collector's machine.
The RD500LC (Race Developed 500CC Liquid Cooled motorcycle)uses a 50-degree, twin-crankshaft V4 engine layout. Linked Yamaha YPVS exhaust power valves are controlled by a single electronic unit and servo motor and are designed to give a broader power band. The engine also features intake reed valves unlike the YZR500 racer which used rotary disc valve induction. The reed valves use two different intake arrangements, the lower cylinders are fed through crankcase mounted reeds; the upper pair use cylinder barrel mounted reeds. The four Mikuni carburettors are side mounted in pairs and feed each cylinder through 90 degree intake manifold. The lower expansion chambers exit normally but the upper pipes cross over each other just behind the exhaust ports to maintain the correct tuned length.
The dual crankshafts are geared directly to the clutch, while the front crankshaft also drives a counter balancer shaft mounted between the two crankshafts. The counterbalance shaft, unusual on a two-stroke, assists with damping engine vibrations. The engine is cooled by thermostatically controlled liquid cooling, an auxiliary electric fan mounted behind the radiator cuts in at quite high but acceptable working temperatures (e.g. when stationary in traffic). Lubrication is by direct injection into the inlet manifolds using Yamaha's 'Autolube' pump system. Normally controlled in other two-stroke engines by throttle position, the engine oil pump is controlled by the YPVS servo motor ensuring that the oil supply is not shut off at high engine revolutions
Engine 499 cc (30 cu in), 2-stroke, four-cylinder, liquid-cooled, reed valve induction with YPVS
Bore Stroke 56.4 mm × 50.0 mm (2.22 in × 1.97 in)
Compression Ratio 6.6:1
Fuel System Mikuni VM26SS 26 mm (1.0 in) carburettor x 4
Lubrication Yamaha Autolube two stroke injection, transmission gear pump.
Ignition Capacitor Discharge Ignition (CDI)
Transmission 6-speed, constant mesh
Final Drive 530 chain, 102 links
Overall Length 2,085 mm (82.1 in)
Overall Width 705 mm (27.8 in)
Overall Height 1,145 mm (45.1 in)
Seat Height 780 mm (30.7 in)
Ground Clearance 145 mm (5.7 in)
Wheelbase 1,375 mm (54.1 in)
Dry Weight 205 kg (452 lb) 196 kg (432 lb)
Suspension Front Telescopic, coil spring, non adjustable spring preload, brake linked anti-dive system Telescopic, air assisted coil spring, adjustable spring preload, adjustable rebound damping with brake linked anti-dive system
Suspension Rear Link-type, gas/oil damped, 5-way adjustable spring preload, 4-way adjustable rebound damping
Brakes Front Dual hydraulic disc
Brakes Rear Single hydraulic disc
Tires Front 120/80-VR16
Tires Rear 130/80-VR18
Fuel Tank Capacity 22 L (6 US gal; 5 imp gal)