Yamaha R7

From Enduro.team
Jump to: navigation, search


Yamaha R7 (YZF-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.

Photos

Yamaha YZF-R7
Yamaha YZF-R7
Yamaha YZF-R7



Specifications

Specifications Yamaha R7 (YZF-R7):

ModelYamaha YZF-R7
Motorcycle typesport
Release year1999
Framealuminum Deltabox II
Engine type4-cylinder, 4-stroke, in-line
Working volume749 cm³
Bore / stroke72.0 x 46.0 mm
Compression ratio11.4: 1
Coolingliquid
Number of valves per cylinderDOHC, 5 valves per cylinder
Fuel supply systemdouble throttle injector, 4x 46mm
Ignition typeC.D.I.
Maximum power106.0 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 torque72.0 Nm (7.3 kg * m) @ 9000 rpm - standard torque
Gearbox6-speed
Drive typechain
Front tire size120/70 ZR17 (58W)
Rear tire size180/55 ZR17 (73W)
Front brakes2 discs 320mm, 4-piston calipers
Rear brakes1 disc 245 mm, 2-piston caliper
Front suspension43mm Öhlins inverted telescopic fork (all adjustments), 120mm travel
Rear suspensionpendulum with monoshock Öhlins (all adjustments), travel - 138 mm
Length2060 mm
Width720 mm
Height1125 mm
Wheelbase1400 mm
Saddle height840 mm
Minimum ground clearance120 mm
Acceleration to 100 km / h4.4 sec
Maximum speed278 km / h
Fuel tank capacity23.0 l (including reserve - 4.8 l)
Motorcycle weight (curb)207 kg

Documentation