I was looking for some info the YR3 that chris from Netbikes has posted in Yamaha section and stubled upon this gem of site documenting Yamaha's racing heritage http://www.yamaha-motor.co.jp/global/race/wgp-50th/ This storry goes from 1961 when Yamaha entered the 250cc class through to today, there are movies and downloads, a must seeĀ if your into Yamahas or classic racing Cheers Chris