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 Yamaha - YZR OW
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Yamaha D2-492-07-13
Photo ou archives : F-M. Dumas

Capacity : 500
Model : YZR OW
Production : 1991 -
Category : (R) Racing


500 YZR Grand Prix I Wayne Rainey -1991

A double play for the world championship

In 1991, the Australian Wayne Rainey tookthe world championship for the second consecutive time in the flagship 500cc class, riding a 500 Yamaha from the Kenny Roberts team. He won the title after a bitterly fought truggle with the Honda of his fellow Aussie, Michael Doohan - one of the tour's most promising new riders - and the Suzuki of the brilliant but erratic American Schwantz.

Life on the Limit

With bikes as with cars, Grand Prix riders live at the limit, constantly striving to achieve perfection in their pursuit of victory. The talented and daring Rainey is one of the most dedicated two-wheeled GP aces, a skillful rider who knows how to make the most of his opportunities. Rainey finished the 1990 season with seven wins out of 15 races. In 1991, with only six victories under his belt, he spent the tail-end of the season in a hospital with a fractured femur after a crash while practicing for the Malaysian Grand Prix on the Shah Alam circuit.

Sporting Spectacle

Indisputably the most spectacular form of motor sport, 500cc Grand Prix racing is a

190mph clash of wildmen astride 160 horsepower, firebreathing terror cycles, stabbing at the envelope of thrills and danger. But the sheer cost of taking part in GPs is threatening the circuit's existence. A privately entered Yamaha can cost its rider something like $175,000 before he even starts racing. The enormous expense of a season's racing and the difficulty of finding sponsors limit fields to about 15 riders per race.


Engine: 498cc (56x50.6mm) V4 two-stroke with twin crankshafts

Power Rating: 160 hp

Valves: variable-timing rotary exhaust valve

Fuel System: 4 carburetors

Transmission: 6-speed

Suspension: (front) inverted telescopic forks;

(rear) mono shocker and cranks

Brakes: triple disks, front 11 in carbon, rear steel

Wheels: alloy, (front) 3.75x17; (rear) 5.59x18 or 6.25x17

Maximum Speed: 190 mph

Constantly hanging it out over the edge, Wayne Rainey demonstrates an enviable mixture of Aussie daring and consummate racing skill.


Motorcycle encyclopedia Moto Passion, realised by François-Marie Dumas, include almost 2000 photos presented with an exhaustive history of the motorcycles exhibited.

This unique collection has been realised with the participation of many specialists. With many thanks in particular to Yves Campion, Michael Dregni, Didier Ganneau, Jean Goyard, Helmut Krackowizer, Michel Montange, Christian Rey, Bernard Salvat, Mick Woollett, etc

One can order here

  • Original cards on paper (in french)
  • High resolution scans or original documents presented and signed with my name.

Please contact me at for conditions and copyright.

© Tous droits réservés
François-Marie Dumas

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