▁as ▁cont rolling ▁the ▁val ves ▁without ▁an ▁ecc ent ric , ▁which ▁made ▁it ▁easier ▁to ▁adjust ▁and ▁maintain ▁the ▁val ves . ▁It ▁had ▁been ▁successfully ▁used ▁on ▁the ▁East la ke ▁Park ▁Sc en ic ▁Railway , ▁but ▁at ▁ ▁a ▁bit ▁too ▁light ▁and ▁not ▁powerful ▁enough ▁for ▁the ▁planned ▁activity ▁at ▁Ven ice . ▁Therefore , ▁Co it ▁ordered ▁a ▁ ▁oil - f ired ▁steam ▁locomot ive ▁of ▁the ▁ 2 - 6 - 2 ▁( “ P ra irie ” ) ▁type ▁at ▁his ▁former ▁employ er , ▁the ▁Johnson ▁Machine ▁Works , ▁into ▁which ▁his ▁innov ations ▁had ▁to ▁be ▁integrated . ▁ ▁The ▁new , ▁nearly ▁identical ▁steam ▁locomot ives ▁No ▁ 1 ▁and ▁No ▁ 2 ▁were ▁called ▁ 1 - Sp ot ▁and ▁ 2 - Sp ot . ▁After ▁Co it ▁had ▁issued ▁the ▁engineering ▁draw ings , ▁he ▁contract ed ▁the ▁Johnson ▁Machine ▁Works ▁for ▁the ▁manufact ure . ▁The ▁bo ilers ▁were ▁made ▁and ▁supplied ▁by ▁the ▁Pacific ▁Coast ▁Bo iler ▁Works ▁in ▁Los ▁Angeles ▁and ▁were ▁fit ▁for ▁a ▁pressure ▁of ▁ 1 7 5 ▁p si ▁( 1 2 ▁bar ). ▁The ▁locomot ives ▁had ▁a ▁Wal sch a ert s ▁val ve ▁g ear ▁and ▁cost ▁$ 4 , 5 1 0 ▁() ▁each . ▁They ▁were ▁painted ▁in ▁black ▁with ▁pol ished ▁br ass ▁bands ▁and ▁silver ▁letter ing . ▁The ▁only ▁difference ▁between ▁them ▁was ▁the ▁shape ▁of ▁the ▁windows ▁of ▁their ▁c abs