Yamaha R7
The Yamaha R7 (YZF-R7) was produced from December 1998 to 1999 solely as a racing bike for the Superbike World Championship and Suzuka 8 Hours. The total number of manufactured models is only 500 pieces. The reason for the production of such a small circulation of motorcycles was due to the rules of the competition, in which only mass-produced models were allowed to participate, so the release of the Yamaha YZF-R7 in the amount of 500 pieces just made it a small-scale version allowed to participate in competitions.
The main feature of the Yamaha R7 (YZF-R7) is a modified inline 4-cylinder liquid-cooled engine from the Yamaha YZF 750, producing 106 hp. power and 72 Nm of torque. Despite the modest power characteristics associated with the restriction in some countries, the Yamaha R7 (YZF-R7) model had great potential - by changing the operating program, it was possible to turn on additional injectors that are not used in the drain, which increased the power to 137 hp. ; it was also possible to install a special racing kit, thanks to which the maximum power was already 164 hp.
Other key features of the Yamaha R7 include a new aluminum Deltabox II frame, fully adjustable Öhlins sports suspensions, adjustable steering wheel, slip clutch, lightweight aluminum fuel tank, electronic fuel injection with dual injectors, titanium alloy valves and connecting rods, and brakes from Yamaha R1.
The Yamaha R7 model, although formally refers to production motorcycles, is still a purely racing machine intended for circuit racing. By the way, this is evidenced by its price, which at the time of the release of the model was about $ 35,000, which is twice the cost of the flagship Yamaha R1.
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Specifications
Specifications Yamaha R7 (YZF-R7):
| Model | Yamaha YZF-R7 |
|---|---|
| Motorcycle type | sport |
| Release year | 1999 |
| Frame | aluminum Deltabox II |
| Engine type | 4-cylinder, 4-stroke, in-line |
| Working volume | 749 cm³ |
| Bore / stroke | 72.0 x 46.0 mm |
| Compression ratio | 11.4: 1 |
| Cooling | liquid |
| Number of valves per cylinder | DOHC, 5 valves per cylinder |
| Fuel supply system | double throttle injector, 4x 46mm |
| Ignition type | C.D.I. |
| Maximum power | 106.0 h.p. (78.0 kW) at 11000 rpm - standard power
137.0 h.p. (100.7 kW) - race-kit I 164.0 h.p. (120.8 kW) - race-kit II |
| Maximum torque | 72.0 Nm (7.3 kg * m) @ 9000 rpm - standard torque |
| Gearbox | 6-speed |
| Drive type | chain |
| Front tire size | 120/70 ZR17 (58W) |
| Rear tire size | 180/55 ZR17 (73W) |
| Front brakes | 2 discs 320mm, 4-piston calipers |
| Rear brakes | 1 disc 245 mm, 2-piston caliper |
| Front suspension | 43mm Öhlins inverted telescopic fork (all adjustments), 120mm travel |
| Rear suspension | linkage with monoshock Öhlins (all adjustments), travel - 138 mm |
| Length | 2060 mm |
| Width | 720 mm |
| Height | 1125 mm |
| Wheelbase | 1400 mm |
| Saddle height | 840 mm |
| Minimum ground clearance | 120 mm |
| Acceleration to 100 km / h | 4.4 sec |
| Maximum speed | 278 km / h |
| Fuel tank capacity | 23.0 l (including reserve - 4.8 l) |
| Motorcycle weight (curb) | 207 kg |
Documentation