More on Yamaha's 4-Stroke GP Effort

Brent Avis
by Brent Avis
This is the latest information update on Yamaha's 2002 four-stroke MotoGPprototype motorcycle - code name OW-M1:

Yamaha is proud to announce the official designated name of the OW-M1 machine, which is theYZR-M1. The name has been derived from the following key elements: TheYZR component of the name represents it as a Yamaha factory prototype GrandPrix motorcycle. The M1 signifies Yamaha's new #1 Mission, which is for thenew bike to win the MotoGP GP-1 World Championship in its debut year. Whileat the same time playing a key role for Yamaha as an R&D test-bed for newfour-stroke technology. This crucial data will be fed back into thecompany's future four-stroke production models...

providing its customers theedge over the competition with the most technologically advanced productionmotorcycles.

The YZR-M1's intensive testing program iscontinuing in preparation for the 2002 season, and its performance in bothlap times and race distance endurance tests have met all expectations todate.

The lightweight in-line, four-cylinder powerplant has already achievedbetter acceleration and higher top speeds than the current two-strokemachines. Track tests have been carried out at Yamaha's own Fukuroi testingcircuit. A further test was then held at Sepang, Malaysia in December 2000,when Marlboro Yamaha Team riders Max Biaggi and Carlos Checa both sampledthe new bike. Yamaha then moved to Phillip Island, Australia at the end ofFebruary 2001.

For the very latest test this week, thetesting team again returned to Sepang and it was here that the YZR-M1completed almost 200 laps and proved its durability, even under extremeweather conditions. Now Yamaha is ready for the next phase, in search ofthe best balance between the compact, high performance engine and thelightweight chassis - which is based on the YZR500's twin-spar Deltaboxdesign. These tests will be carried out in Europe at several current GPtracks over the next six months. The YZR-M1 development is on schedule, andit is ready to achieve the next set of objectives in order to be fully readyfor its Mission in 2002.

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