Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles
Issue link: https://magazine.cyclenews.com/i/126809
. .. ... ......... . ... . .... New RA.V.E. valve from Rotax reshapes eXhaust flow as you ride It'S no secret that small changes in a bike's exhaust system can makea big difference in the way its engine performs. Thesystem that delivers peak, charging-down-a-straight power is not the same system that pumps out maximum to rque for blasting out of slowcorners. , A That's why most bikes ""'- come with a middle-of-theroad pipe: not . ideal at top speed, but not hopeless at low. Now Rotax has added a remarkabledeviceto the new Can-Am 125 and 250cc liquid-cooled powerplants. It' s called the Rotax Automatic Variable Exhaust. 1 B ' RAV.E. . changes the flow pattern of your exhaust syst em as you ' race. Automatically. At high engine speeds (FIG. Al, RAV.E. offers the high-volumeand effective ext raction propertiesof a peak power system. At lower engine speeds (FIG. Bl, a guillotine valve, mounted in the port and activated by exhaust pressure, progressively closes to help maintain the flow velocity necessary for good extraction . RAV.E. isa highly effective, yet remarkablysimpledevice. And there liesits advantageover other designs. Thereare no complicated linkages to break, no delicate mechanisms to carbon up. . Simplyexcellent performance. At anyenginespeed. . ~ N CAN-AM TAKES THE UNDER-200cC CLASS TO THE LIMIT! Meet the 200 ASE from Can-Am, a new enduro bike . that is going to create a significant balance-of-power swing in the ongoing class struggle! TheCan-Am 175 ASE was an ex· ceptlonal bike. But, every t ime they competed on it, Can-Am riders were giving away 25ccto the class limit. Thenew Can-Am 200 ASE puts an end to all that unfairness. Those extra 25cc's are no ordinary cc's. They're from Rotax. And they were IS NEW QUAD LINK II THE LAST WORD IN RISING RATE SUSPENSION? The ideal dirt bikesuspension should react perfectly to everything from ripple bumpsto stutter bumps to whoops ... to absorbing the force of a high altitude landing. Working with just a few inches of suspension travel and some neat tricks of lever mechanics, the best produced, not by opening out the old 175, but by sleeving the oversquare, rotary-valve 250. The result isan engine that is incredibly strong, as well as impressively powerful. Handling has been improved too, with the new Quad Link II rear suspension and a lighter, alloy swingarm. In the toughest woods sections or the fastest harescrambles, Can-Am's new 200 ASE isgoing to makea big dif· ference.ln greater rider comfort, in lower point scores. And in resu lts columns all across the count ry. any real suspension cando is cover that part of the surface deflection rangethe designer thin ksis most important. . Take someother popular suspensiondesigns. They're Real Comfort· ableon lesser bumps but " look out below" when you land ajurnp. On the other hand, last year'sCanAm suspension was built to swallow almost any landingshort of atmosphere re-entry. Now, new Quad Link II offers the best of both worlds: exceptional rider comfort and heavy-duty disaster orotectton"'- . It 's on every newCan-Am rnotocross and enduro bike. And it will makea noticeabledifference wherever you ride. GUADLINKII The ASE's from Can-Am just keep getting better unsprung weight. But there's a lot more you notice when you ride these bikes. Thegentle but positive action of the new Quad Link II rear suspension. The confidence-building power.of the double leading-shoe front brakeon the 500 ASE. The improved cornfort and cornering potential of the new seat/tank combination. All these th ings makethe newASE's better ASE's. But they've still got what Martin and Ballard and every other canAm rider likes best: the kind of bedrock From New England forests to rnents havebeen made that reliability that lets you comCalifornia deserts, Can-Am will makeASE performance pete every weekend without ASE's havehad an impressive even better. a teardown every other Some of them you can season across the country in week. the hands of both factory see just lookingat the bikes. Rotax reliability. It's the Air-deflector wingsand oor- heart of these new can-Am riders likeJohn Martin and Geoff Ballard aswell as hun- cuplned cylinder fins for bet- ASE's. And the logicbehind dredsof 100%privateers. ter cooling. Answerproducts your next successful season. What all those riders liked muffter/spark arrestor for best about the ASE's isstill ' improved exhaust efficiency. there. But dozens of improve- New alloy swingarm for less How to turn the deepest woods into a motocross track TheCan-Am liquid-cooled 250 ASE LlC isthe ultimate in built-to-win enduro machinery. It is, in effect, a motocross bike with a few refinements . to makeit suitably civilized in the woods- s-soeec gearbox, medium-weight flywheel. odometer, lights and an Answerproducts low- rest rict ion spark arrestor/ muffler. The 250 ASE LlC isavailableonly on special order _ from your Can-Am dealer. When you get it, you roll it straight out of the box and int o battle . And the only ex· tra YOU'll haveto buy is the trophy case. ,.,...--=."...."......,.,---=..,..,..,,"" ,;