Yamaha YZF-R7
The Yamaha YZF -R7 (factory designation OW -02 ) is a super sports motorcycle category of the Japanese manufacturer Yamaha. Between 1999 and 2002 a total of 500 copies were produced. The YZF -R7 served as the predecessor OW -01, in the first place. Than homologated for the 750 cc class in the Superbike World Championship Your original price in 1999 was DM 44,990 and was more than twice as high as the original price of the YZF- R1.
Technology
The R7 was not just a road-going machine that could also race, but a competition bike with lights and starter. The roots of the Yamaha could already be seen in the engine design, which had as the YZF- R1 five valves per cylinder, a unit from the cylinder and crankcase and a vertically staggered transmission. The motor dimensions were identical to those of YZF750SP. But in contrast to this, the YZF -R7 had a fuel injection. The cylinder head parts were CNC milled to achieve precise measurements and a perfect balance between the cylinders.
The lightweight titanium valves and giblets included connecting rods and forged pistons with nickel-plated shelves for better durability. The chassis was similar exotic. The black color of the frame pointed out that he rather the 500cc GP machines arose earlier than road models. The spars of the main frame contained an additional aluminum layer, which promised an over the YZF -R1 doubled torsional rigidity. The sophisticated 43 -mm upside-down fork came just as the rear shock absorber from Ohlins. Steering geometry and position of the swing bearing could be set.
The YZF -R7 was prepared for the outfit with a racing kit, which, however, because of the few necessary modifications turned out small (the peak power was not the only set of 100 hp to facilitate global homologation ). The most important component was the major carbon fiber airbox, which allowed the use of a ram-air system. In addition, the kit even contained a carbon fiber silencer.
Flat stump handlebar, staggered backwards footrests and a single seat racing underlined the intention. The flexibility of the engine made the engine at moderate speeds driveable, but only at high speeds, the lightweight innards came to fruition, and the Yamaha showed a strong acceleration. With the race set the YZF -R7 made about 160 hp at 13,700 rpm, enough for a top speed of 290 km / h The rigid, multi- adjustable chassis of the YZF -R7 combined with a direct steering stability and precision. Every detail from the road or race track was relayed directly to the driver, so that the curve ability was far above the normal sport bikes. This was mainly due to the outstanding Öhlins suspension. For this purpose, provided the two front disc brakes from a huge braking power.