Yamaha R7

From Enduro.team
Revision as of 20:09, 15 August 2021 by Alexander (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
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):

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 pendulum 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