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/126477
Yamaha OW 41B bly, the Suzuki Rooter also differs in that its rocker arm assembly is the same width as the frame. A Kayaba coil-over deCarbon shock with remote reservoir controls 300mm of rear wheel travel. Front wheel travel is similar with Kayaba 43mm air/spring forks. Another vital statistic available is a minimum weight right on the RM limit of 224 pounds. The sand cast magnesium cases of the 440ce RN motor have been redesigned this year to allow working dearance at the back for the Floater suspension, but otherwise the motor is fairly unchanged from last season. Suzuki is the only Japanese manufacturer to run steel sleeve liners in its aluminum cyli nders. The cylinder reed induction system employs an eight petal V-shaped reed block feeding the 'engine Ithrough a OJ massive bridged intake port . Carburetion is by a 38mm M ikuni. The transm ission carries five speeds. Can-Am MX-6 406cc Here's an example of a production bike which has received extensive modifications to make it a serious competitoron the National circuit. Jimmy Weinert's Kolbe-sponsored Can-Am began life as the latest MX-6 showroom stocker and then changes were made to it lafter the accompa nying photo was taken) to improve the handling . The regular ' Marzocchi 38mm front forks we re replaced w ith th e latest Fox Factory 44mm air/spring forks w hich off er 300mm (12'" of travel, extensive adjsutability , as w ell as bette r handling and damping performance . Rear rear travel is 315mm, provided by a special aluminum swingarm from Can-Am. Can- Am 's optional Ohlins shocks have been replaced by Fox Factory Shox which allow quicker damping and spring changes and won't fade in 45minute motes. Whee lbase on the Kolbe Can-Am is pretty short for ,an Open bike at 57.8 inches, but for a production based machine the we ight is a low 221 pounds. The 406cc magnesium five-speed Rotax engine has case reed induction, some slight porting modifications and a factory built exhaust system , but is otherwise fairly stock. Carburetion is provided by a 40mm lectron. Husqvarna CR 412cc Clark Jones is sponsored by Anaheim Husqv arna wh ich has made a number of modifications to his production Husky CR 390. The most important change was the replacement of the espindlvsteck 35mm O forks"w ithM mm Fox Factory forks for a signi ficant improvement in front end handling. At the rear of the bike a lightweight Pro Circuit aluminum swingarm and a set of the latest Ohlins piggyback shocks also improve handling . Wheel travel at both ends of the bike is 300mm. The wheelbase remains at the stock setting of 150cm (59" '. . The availability of a special oversize piston kit from Husqvarna allowed Anaheim Husqvarna io bore the stock 390cc engine out to 412cc to make it a little more competitive against the factory bikes. Special cylinder porting and a new Pro Circuit Products exhaust pipe, also available from Anaheim Husqvarna, gives the bike additional power. Induction is by standard cylinder reed assembly and a 38mm Mikuni. Ready to race we ight of the bike is I slightly heavy at 244.5'poundsl • ••• • 23