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/125619
~ Harley 750(( OHY ; Tria.ph 3 Flattracker ~ 2 WAYS TO GO ~ ...:l U ;., U DeMoiley conwrted the Triumph Trident witIl a minimum of effort. Bu1Ier'.75Occ Spew bl8f NP_b much Ii...., effort lII1d tllallllht. powerplant, though new sprockets had to be fabricated to get proper gearing to the rear wheel. To mount the taU Sportster motor in the lowboy frame, the backbone had to be cut away and replaced for an extra 1Yl inch clearance. Robert's brother did most of the brain work. With his engineering guidance and help from friends at Pontiac, Robert is confident that he can come up with a successful machine when minor teething problems are solved. Johnny OeMoisey decided to get his CuD share of cubic inches by preparing a new Triumph Trident Three for racing. Many years of scrambling experience with a 500cc Triumph influenced his decision, since the 750' is virtually a row of three of the 250cc cylinders. Internally the Trident is uDchanged, except for the stripping, clearancing, and careful rebuilding that normaUy goes into a racing engine. The stock frame and front end are By Ed Youngblood Chillicothe, like Springfield, the week three-cylinder, the bike that Baltimore before was teamin8 with examples of what reportedly rejected in faven of the Bonneville. Extemally, Butler's mount looks like a the new AMA rules have brought forth in stock Sportstex in the KR lowboy road-racing professional acing. The new BSA Lightnings, frame. But the innards have been re-worked Triumph Bonnevilles, and Nortons were along the general lines that the factory will present, and the lCRs, Gold Stan, and 500cc foUow in production of its new 750 overhead. Triumphs were still trying. But the lCR is the The standard bore of three inches with a only older bike that continues to keep pace .005" overbore has been retained, so the with the 6505, and that it still does necessary reduction has been achieved by handsomely. We fiDally got wend, though, shortening the stroke. that the new 750cc overhead HoO will soon go To bring the stock 883cc Sportster down to into production. 750cc Butler and his comndes at Plant 14 of Two Amateurs, however, are not waiting the Pontiac Motor Division where he works fen the factories. Repreoentin8 the sreat riYals have welded over the crank pin holes in the H-O and Triumph, they have adventwed on stock Oywheels, and re-<1rilled them .312" to the logical conclusions of the new rule c100er to the crankshaft center. Replacing the book. Robert Butier (Amateur 95E from pin at this distance brings the volume down to Oxford, Michlgan) has beaten Milwaukee to the legal limit, then the cylinders are the tracl< with a 750 overhead, and Johnny shortened accordingly. OeMoisey (~ur 4lL from Covington, Lirt1e else has been changed in the KentuckJf1l"Pis fieldinl a Triumph retained, and the only alteration to suspension is a pair of Koni shock absorbers at the rear. Johnny reports that handling is good and that the motor supplies large amoun 15 of weU-distributed power. Bigger carburetors are attached, and exhaust is channeled through very small and gradually tapered megaphones, one to the left and two to the tight. The Trident measures out two fuD inches longer than the Bonneville. OeMoisey carries a small brake on the rear, and uses it via a right~and handlebar lever. He feels that the smooth power supplied by the multi is a definite advantage and reports no problem with width or high center of gravity. He says the greater length probably makes up for any handling problems that might result from the 365 pound weight. Butler and OeMoisey, we wish you luck. It is your kind of adventurous attitude that makes Class C acing the exciting sport it is. Dude Criswell Presents Autllentic EurfJpefln c.\\\\6teo A(fJtfJrcycleE,ery Sat. Night 8:30 p.m. Whiteman Stadium 13020 Pierce St. Pacoi.a San Fernando Rd• . • • -----------~._-- - = • • • • • •• ~~~ Save ADMIT TWO $1.00 $8v.. $1.00 ptrCouple ~~~----------; Save $1.00 22 Event Proeram· with suell creats as RIck Woods· Sunny Nutl8r· S'..e Bast· Sammy Tanner· Eddie MlXllder & many others. Every sat. Night 8:30 p.m. Dude Criswell Presents Authentic European Speedway WIllteman Stadium • • = • ·l=S~a:n~D~i:ee~o~Fr~e:ew~a~y~====~~;;J • • ~~~:~e~:II~~. f Pie· ree ar 'ng rw.••••••••••••••••••••••••••••••••••••••••••• .n OOOll:lOClCaooa_l:IOCICaooa_I:IOCIC'"