Cycle News - Archive Issues - 1980's

Cycle News 1985 11 20

Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles

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. -. -. - yem; every manufac motocrossers. A rule that . . . . For the last threeyears, factory motocross teams have been divided into two distinct camps. Thosethat race $100,000 one-of-a-kind works bikes. And those that race $2,000 stock bikes. Which, ofcourse, seems like an unfair advantage. Until you consider this: In 1984, Rick Johnson won the250cc title aboarda stockYZ. In 1985, Brae Glover won the 500cc class aboard a stock YZ. And, inboth years, stock YZ's were responsible for more than theirfair shareofsupercross victories. All ofwhich the competition undoubtedly sawas an unfair advantage. And so did the American Motorcycle Association.They stepped in and changed the rules. Noweveryone will have torace stock bikes.Which eithermeans we're three years aheador they're threeyears behind. The samedifference as far as you're concerned. Of course, it would be a lot easierfor themtocatch up if we were standing still.But we're not In the caseofthis year's YZ125, we've made a lotof changes. Not just superficial, And weve given it an ingenious cooling system that circulates coolant not only cosmetic changes, but the dramatic kind. Like giving it a newenginethatsmore powerful than everbefore. An engine incorporating a unique reed valve induction thatdelivers the mixture directly into the crankcase, instead ofthe cylinder. Weve given it a 34mm flatslide carburetor that dramaticallyimprovesthrottle response. throughout thecylinder,butalso throughout the crankcase.The charge stays cooler and denser. Translation: more horsepower. There is,however, more to building a high-horsepower motocrosser than simply buildingin a lotofhorsepower. You have tobe abletoget the horsepower tothe ground 30·daywarranty. WamJntyItrms art li"' iUd. SeeYOU' Yamaha dealerfor details. SPtci/i£alions art sulJjt llo changt withoul notice. Always wea, a lul...., and tyt proltcllon.Dt signedfo, off·road, OfJtralo, lISt only. c 14 . . ~.. . .. .

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