Yamaha YZF – Wikipédia
The YAMAHA YZF is a series of sports motorcycle models produced by Yamaha. The YZF line started in 1993 with the 750. It is still perpetuated today.
The YZF 750 R is presented in 1993. It aims to be a real road machine for the road. She uses an online four -cylinder 749 cm 3 Inserted in a Deltabox setting, identical to the race yzf. It develops 123 ch To 12 000 tr/min For a couple of 7.8 kg m To 9 500 tr/min . Its peculiarity is, like all the Yamaha with Genesis type engine, to have five valves per cylinder, from a modified version of the FZR 750 R OW01 of Superbike. On the other hand, it is equipped with the exup exhaust valve, which modifies the exhaust diameter, which improves the low and medium -sized power.
An even more sporty version, the YZF 750 SP, comes out at the same time. It is even more radical with special carburetors, a specific ignition map, a single -seater saddle.
The T-CAT, which appeared in 1996, has an online four-cylinder engine, with four Keihin carburetors of 36 mm , developing 96 ch To 11 500 tr/min , maximum torque of 6.3 kg m To 9 600 tr/min , liquid cooling; It benefits from a six -speed gearbox. She weighs 187 kg dry and 212 kg All full.
The front suspension is ensured by a telescopic fork in diameter 41 mm and the rear suspension by a single-manner. Both are adjustable in preload, compression and relaxation.
Presented at the time as a competing hypersport of the Honda 600 CBR, it was replaced in 1999 in this role by the very radical YZF R6. However, it remained marketed in France until 2003, and in the United States beyond 2005.
More user -friendly than a pure and hard sportsman, both for the pilot and for the passenger, she is now classified in the sports road category (her Deltabox frame, made of steel, weighs from 8 to 10 kg more than a aluminum frame).
The capacity of the fuel tank is 19 L (3.5 l reserve) [ first ] . Its maximum speed is 245 km/h .
The Thunderace or T-ACE appeared in 1996, replacing the FZR 1000 Genesis.
We find the four -cylinder brought to 1,002 cm 3 , delivering 145 ch , in an aluminum setting.
The reservoir of 20 offers sufficient autonomy to envisage long getaways in a duo sport/road compromise, penalized vis-à-vis its sports sisters pure juice by an imposing size and a high weight (198 kg empty). However, we will deplore the placement of the puppets, a little high for the comfort of the passenger.
It was available in white/red, gray/black, blue/black, gray/silver, red/silver. This model stopped in 2003.
Relegating its predecessor, T-ace, at the rank of sport-GT, the R1 caused an evolution of the range in the world of sports motorcycle when it was released in 1998. The purpose of Yamaha was to “create the reference in terms of Motorcycle Supersport efficient “, in particular thanks to” an engine and a peak chassis combined with an aggressive and recognizable design “.
Power of 150 ch For 177 kg, the first version of the R1 offers a weight/power of competition machine ratio. A comfortable driving position and practical aspects were not part of the specifications. Slightly retouched in 2000 at the level of the fork head, the passenger saddle, the mirrors and the tank, the 2000 version wins 2 ch and lighter 2 kg , especially thanks to the adoption of a titanium silencer and no longer in carbon, carrying the whole 152 ch for 175 kg .
For the 08R (future YZF-R1) project, Yamaha had three objectives: having more power than any other motorcycle, less weight than its rivals and being the most compact in its category. The most suitable engine was a four -cylinder online cooled by tilted cylinder liquid, derived from Genesis technology developed in racing by Yamaha, it is barely wider than the four -cylinder of the 600 cm 3 . A magnesium-cylinder head cover and a cylinder block with shirts treated with ceramics made it possible to gain lightness. The five -valve cylinder head overcomes a very compact combustion chamber and carburetors of 40 mm , all associated with an exup valve controlling the passage of exhaust gases to increase power and torque in mid-regime. The Deltabox frame is reduced to its simplest expression, but seems imposing compared to the engine.
It is radicalized more and more with each evolution. The 2004 model is even more powerful and always lighter: 180 ch for 172 kg .
Yamaha takes up the concept in 2004 on a version called “Steel Fighter”. Based on the 2003 model, the R1 receives a dressing designed by the Boxer Design team, including radiator scoops, an engine shoe, a fork head. The whole is sold 442 € € In addition to the R1 2003. For reasons of homologation, it equipped with bracelet handlebars, but an option allows you to benefit from a high handle.
This model is mainly intended to sell the 2003 model stocks, at a lower cost, before the arrival of the 2004 vintage.
In 2006, a SP version was born, even more race oriented. Limited to 500 copies, it offers 3 ch Additional, Öhlins suspensions and Markeini rims.
In 2007, Yamaha left a white sheet and offered a new model. The five -valve cylinder head gives way to an unprecedented four -valve cylinder head.
In 2009, the engine setting was so -called “crossplane”. The manetons of the crankshaft are at 90 ° from each other instead of being 180 ° as it is customary on the four -cylinder online.
In 2012, she broke a record on the Tour of the Nürburgring in 7 min ten s 89 [ Ref. desired] .
As in automotive rally in the 1980s with the famous group B, so that a machine can run in endurance or superbike, it must have been produced in series. For this reason, the manufacturers put on the market racing motorcycles with just the necessary to be able to drive on the road (indicators, license plate, etc.). This is the case of the Ducati 999r, the Kawasaki ZX-7R and the R7.
Its 500 copies were produced from 1999 to 2002. It was necessary to pay 27,440 € € to which the performance kit had to be added to 14,400 € € To have a machine capable of winning the golden bowl. The engine develops 160 ch And a set of Öhlins suspension is present.
A power of 120 hp for 169 kg and around 600 cm 3 , the R6 was designed in 1999 to support and then replace the Thundercat. It is a variation that pushes the concept of sportiness in radicality.
It has not ceased to evolve in this direction since then, becoming more and more effective on the circuit, and less and less friendly on the road. Power has increased to reach 133 ch On the 2006 model (largely more than 200 ch/L ). It is the first to claim a maximum engine speed, according to the manufacturer, of 17 500 tr/min . The transition to the bench of certain copies will reveal a maximum diet closer to 16 200 tr/min .
Available in red and blue in 1999 in very competition drawings, its evolution gradually turned into graphics closer to a roadster while retaining the aggressiveness of the hypersportive.
The YZF R125 is presented at the end of 2007. To compete with the CBR 125, Yamaha presents a small typical sport machine, animated by a four -stroke monocylinder with liquid cooling, developing the 15 ch legal to satisfy the equivalence law permis b / A1 permit .
It benefits from a Deltabox Kyesto perimeter frame, brake discs of 292 and 230 mm , respectively at the front and rear, of a telescopic fork of 33 mm of diameter, an aluminum swing arm and a design resembling its sisters R6 and R1.
It undergoes a slight makeover and many new engine parts in 2014.
There is a close version in Asia and India called “R15” of 150 in the countries cm 3 about 17 ch .
The YZF R3 or R300 was released in 2015, taking up for most of the properties of the R25 released in emerging countries. Yamaha gives him a new twin -cylinder 321 cm 3 of 42 ch To 10 750 tr/min . It is specially built to meet the need for permis A MTT1 limited to 48 ch [ 2 ] .
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