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/125661
Cover Sequence Continued TIle clant deadlall shown on the cover upset mare than'one rider durIn&. the SCTA trials. Some· times an all out eflort Is needed just to Cet throuch the section at all and lIeverythlnc doesn't Co just rlcht•••• / The Yamaha street scramblers can be set up as a suitable trials mount with a IIltle effort and judcment. Replacement 01 the seat, relocation 01 the loot pecs and Internal cearlnc chances are some 01 the key modifications. Set Up Your Yamaha For Trials By Bill Brokaw Highly sophisticated Tr1a1s motorcycles are getting more common and easier to buy. These out-of-the-box cycles leave nothing to desire, unless a person has a desire to own a competitive machine that 15 not just another production model. Mark Mllck of Colorado Springs 15 one of these. He bought a 175 Yamaha Enduro because of Its versaWe on the road, off the road features. Becoming more interested in Trials he decided against buying a production Trials Iron and he went to work on his bike with some help from Bill 3rokaw, his dealer. The bike 15 not yet completed. Plans are to buUd a different exhaust system and oU tank that w1l1 slim the bike for leg clearance. To date the mod1f1catlons and set uP are these: The front loop 15 a 3.00 x 2l ' ~ Metzler knobby. An alloy fork brace for more positive steering. A raised plastic front fender • Handlebars are scrambler type that have been rebent to provide a flatter grip angle. Fork stops were ground down to allow the greatest turning without the forks strikIng the gas tank. A small solo saddle was fitted. Rear tire 15 a 4.00 X IS" Dunlop Trials. internal gearing was changed by fitting the low gear set from Yamahas close ratio racing gear set. This brought low gear closer to second. Final drive 15 a 12/55 sprocket combination. Footrests were buIlt using Bates competition folding weld-on units. The right side peg was brought in line with the swing arm pivot and the broke peda1 was shortened on both the pedal and lever ends. This maintained approximately ortg1nal leverage. The left side footrest 15 mounted approximately 3" to the rear of the right side peg. The gear lever was then shortened and reverse. This staggered arrangement of the footrests enables the rider to balance his body on the machine' without - tugging on the handlebars. The torque cbaracteristics of the Yamaha l75cc engine are very good. The bike 15 impressive to ride and there 15 little doubt that it w1l1 be a trophy getter. 1970 Beris'lire In". Tr;a' Se' for Ma, 16 &17 The tiny rural village of Middlefield, Mass. in the heart of the Berkshire Hllis will host some 400 trail -riding enthusiasts for the 6th annual Berkshire Tr1a1s this coming May. The Berkshire Is the only event of Its kind presently held In the U.S.A., a two day cross country trial patterned after the International Six Days Trials, held for 44 years In Europe. Because of Its ISDT nature, the Berkshire this year will be one of the qual1fyIng events for U.S. riders interested in selection as U.S. entries for the 45th ISDT, to be held In October in SPain. According to a spokesman for MICUS, the U.S. aff111ate of the Federation Internatlonale Motorcycllste (FIM) , the Berkshire performances of those riders indicating Inter est in the ISDT will be taken Into account when the U.S. entry If selected. Entry for ms will be maIled directly to over 1000 eastern U.S. endur o riders, with the first 400 returned to be accepted. Already inquiry fr om California for team entry has bee n received. Teams representing most major dis tributor s of off-road motorcycles will be entering the Berkshire this year . FROM SUL.T~C::O Torque UPSWEPT, TUNED EXPANSION CHAMBERS. ANY Moon. COMPLETE WITH BUI LT·IN HEAT ,.,.: I SHlnO. BOLT ON· NO MOOI'ICA TIONS REQUIREO~ $39.95 T.N.T. RTE. I, 1248, McMINNVILLE, ORE. 91128 Special offer: Girlin g 's 3·wc y ad ju stable shocks . $29.001 pair . Specify make c nd t ype of mach ine . CYcle Trends -- M ore r igid Cer ia ni or Sherpa ' fr o n t f o r k s w it h " SM " c hro med , t ub u l e r fen d er stays. $14.9S /palr Sto p changing St op eti In a nd s p ro cket wear - f it " SM " ch a in oile r . Fits any bik e . Spe cify fende r or e ng ine bo lt mo unting . $14.95 NYLON CONTROL CASLES N yl on interfaced cab les (and o ute rs wit h o il n ipp les ) for smoother a ct ion e nd longer l ife. For evrreee and Ma nte sc . Fro nt br o ke $3 .25. Clutch $3 .25 . Th rott le 52.75. Comple t e set $9 .2 5 Be tter r id ing pos it ion with " SM " ).4." lowe r foot re st s . $12.95 Bu f t c c c e xp e n s iv e bus hes - swi ngorm bronze fit " SM" Silent bloc S et yo u r s, conversion. $16.50 up f r ont f o rk sp rings w ith a lloy pre loa de rs.. Suitable for for ks with u p to 30mm d iem. in ne rs . $3.65 .... It These Gnd many more Super-So", goodies ovailable trom CYCLE TRENDS , P.O, Box 3 539. Santa Mon ica . CA 90403. 21 3 · 45 1,5077 Send check or money order, Calif. resident s add 5% sales tax .