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/125878
; Kaw 100 double ;; pumper reed ~ conversion ~ Hey Mr. Flagman! New 250 Pro Dean St afford (at left) carries around some flags during a Cl\IC motocross at South Bay Speedway. Chula Vista, California September 4. (Below left) Crossed by a star at South Bay Speedway, Husky man cro sses it up. A child of the universe? (Below) Steve Genet " plays "me and my shadow" at CMC's Carlsbad race September 1. Continu ed fr om page 28 g -e- r0'1 Engine Masters, or directly from Kal Gard Corporation, 7118 Gerald Avenue, Van Nuys, California, 91406. Frame and com ponents: The frame is from a GT-3 Kawasaki that has been al tered just ahead of the seat, both for rigidity and to make it possible to mount the Green Streak tank onto it. The forks are from a 125cc Yamaha. The upper crown area was relieved so that the fork tubes can slide up through the crowns. This effectively lowers the center of gravity, places more weight on the front wheel, and decreases the rake angle, making th e motorcycle quicker-responding and more agile in a slide. At the rear we used a pair of chromed Betor shocks that have been re-angled seven degree more forward on the top mount . The swing arm has been extended one inch to give the motorcycle a breathtaking 49·inch wheel base. Wheels and hubs are standard GT ·3 items with a 58 ·tooth rear sprocket. Perfo rmance : Estimations of performance can be very misleading even if you have a dyno to give you a graphic display of what is occurring. In an effort to give an effective test on what the bike could do under actual p o w er-to-the-ground co nditio ns, we found an area that was th e eq uivalen t of a dirt drag strip and ran co m pe ti tive machinery against our experimen ta l b ike. We felt the 125 Suzuki TM, 125 YZ, and Honda 125 Elsinore would b e a good match for our IOOcc Kaw, As it w ork ed out , all the previously mentioned bikes were, to o urs an d everyone else's surprise, nowhere near our bike at the end of 26 standin g start races. Here's some good news for riders interested in improving their small bore Kawasakis. A reed valve conversion kit will b e availab le on an exchange basis starting this fall. The kits will included: (I) reed valve cylinder ported to our experimental specifications; the piston, head and cylinder will be Kal-Gard treated, (I) reed spec's - down pipe "u" weld kit. (I) reed cage for single set ups and (2) for duals, rear of cylinder milled and reed manifold heliarced in place and Zyglo'd (TM) for possible leaks, etc , TIre kits are complete, less carburetors, and should retail for S 174 for the single reed setup and S 199 for the dual reed. Interested parties should write to: Two Stroke Engine Masters , c / o Arthur Ridderhof, 10984 Culver Blvd., Culver City, CA 90230. • Though not defini tive. quickie d yno run helped sh ow t h e ex tent of t he horsepo wer boost of the dual ree d system. H.P. Experimental (2) reed l00ee Kaw • • 42 I • I. RPM x 1000 ... .. ., Corona IT & short track the quarter-mile. As the riders moved through the fourth tu m and towards the checkered flag, it was Tidwell edging ahead with Naymola right behind. . In t he 250 Expert short track feature, Tidwell grabbed the lead from th e start. Making his firs t appearance ever at Corona Raceway was Bobby Smallwood (Yam ) of Glendale, Arizona, who is the n umber one rider in t he 125 Expert class in Arizona. Smallwood challenged Tidwell a couple of times, but by the fourth round Tidwell h ad the number one spot wrapped up. Smallwood was second. Another rider making his first showing at Corona Raceway was Dean Sykes of Vancouver, Washington, getting warmed up for his first time at Ascot Park on the half-mile. In the By To m Blattler' CORONA, CAL., SEPT. 4 Little Mike Tidwell returned to his winning ways tonight at Corona Raceway in the IT and short track motorcycle program, capturing four main events in the 125 and 250 Expert classes riding Yamaha YZs. Tidwell, who rides for Yamaha of Montclair, had been beaten in the past few weeks in both. Last night, however, Mike put it all together. defeating some of the top riders from Southern California and Arizona. In the 125 Expert TT Main, three riders jumped starter Bob Pickle before the start, including Tidwell. The three were sent back to the penalty line, and the race was started. In the first tum, young Rick Naymola, making an appearance at Corona after a long absence, grabbed the lead followed by Wes Chandler and Tidw ell. Tidwell then moved by Chandler going into the right-hander before the jum p. Naymola still held a good size lead as the riders went by the grandstands for the first time. Then Tidwell tried to get underneath Naymola in the left tum into the infield. In the following right, Tidwell just got inside to grab th e lead for the first time. Rick was not about to give awa y the victory, and he challenged Tidwell throughout the six-lap feature. On the final lap, Ontario 's Eddie Lawson moved up to make it a three bike battle; all three were wheel -to-wheel into the third turn of northern parts of the West Co ast, TT racing pretty m uc h ru les with Sidewinders park and Castle Rock being the top tracks. So for Sykes, the Corona course see med familiar. He rod e his 350 Kawasaki to an excelle nt vic tory in the Open Expert class, defeating Doug Westly (Kaw) . Top AMA professional Novice rider Jim Wright (Bu l 350) returned to the short track wars at Corona for the first time in a while. Wright was fresh off his line fourth place finish in the MIA short track at the Antelope Valley Fairgrounds, the only Novice rider to make the main event at Lancaste r. Many feel it was his experience at Corona that made him so fast on other short tracks. Wright defeated Sykes. • Resul IS in the Resul ts Section. Eddie Drake (84) slid h is way into second in the 100 Nov ice TT feature race at Corona Raceway Sept em ber 4. He d oes alright in 125 Novice, too. u " d: ~ OJ o ..,