▁a ▁job ▁to ▁develop ▁the ▁O ss a ▁ 2 5 0 cc ▁race ▁bi ke . ▁The ▁O ss a ' s ▁mon oco que ▁ch ass is ' ▁superior ▁st iff ness ▁and ▁weight ▁im bu ed ▁it ▁with ▁exception al ▁corner ing ▁and ▁bra king ▁ab ilities ▁which , ▁in ▁turn ▁allowed ▁for ▁faster ▁corner ing ▁spe eds ▁than ▁the ▁competition . ▁T ogether ▁they ▁won ▁the ▁ 2 5 0 cc ▁Spanish ▁National ▁Championship ▁in ▁ 1 9 6 7 . ▁ ▁Grand ▁Prix ▁championship ▁In ▁ 1 9 6 8 , ▁he ▁would ▁move ▁up ▁to ▁comp ete ▁in ▁the ▁ 2 5 0 cc ▁Grand ▁Prix ▁world ▁championship . ▁Although ▁the ▁single ▁cyl inder ▁O ss a ▁had ▁ 2 0 ▁horse power ▁( 1 5   k W ) ▁less ▁than ▁the ▁powerful ▁V 4 ▁Yam ah as ▁of ▁Phil ▁Read ▁and ▁Bill ▁I vy , ▁the ▁O ss a ▁was ▁ 4 5 ▁pounds ▁( 2 0   kg ) ▁l ighter ▁and ▁its ▁mon oco que ▁frame ▁was ▁much ▁st iffer , ▁giving ▁it ▁superior ▁ag ility . ▁Her rero ▁was ▁able ▁to ▁take ▁advantage ▁of ▁the ▁O ss a ' s ▁light ▁weight ▁and ▁superior ▁handling ▁characteristics ▁to ▁remain ▁compet itive , ▁especially ▁on ▁t ighter ▁race ▁tracks . ▁The ▁Yam ah as ▁swe pt ▁the ▁championship , ▁but ▁Her rero ▁left ▁no ▁doubt ▁that ▁the ▁little ▁O ss a ▁was ▁quick ▁and ▁depend able . ▁He ▁finished ▁sevent h ▁in ▁the ▁championship