Rubuta ci gaba don wannan sakin layi - Lokacin da yake da shekara 17, Blash ya sami aiki a RRC Walker Racing Team a matsayin makaniki. Ya yi aiki tare da Jo Siffert da Jo Bonnier waɗanda ke da gogewa a cikin Formula One. A cikin 1968, Blash ya zama injiniyan tsere ga Graham Hill a Lotus kafin ya yi aiki tare da Jochen Rindt shekara guda daga baya. A ranar gasar Grand Prix ta Spain ta 1969
, Blash ba da gangan ya yanke sassan sabon, babban fuka-fuki na gaba daga bangarorin aluminum. Lokacin da Chapman ya duba fuka-fuki, sai ya yi fushi kuma ya bukaci a janye motocin daga tseren. A ƙarshe, Lotus ya ƙare a tseren kuma dukkanin motoci uku sun yi ritaya. Bayan mutuwar Rindt yayin cancanta a gasar Grand Prix ta Italiya ta 1970, Blash ya ɗauki nauyin gudanarwa a cikin Lotus har sai ya fita tare da ma'aikata da yawa. A shekara ta 2010, shekaru 28 bayan mutuwar Chapman, Blash ya tuna "Mista Chapman shine ƙaunar da Allah yake da mu". Ya bukaci ma'aikatansa su yi amfani da su don yin watsi da kansu. Blash: "Na fara a ranar Litinin da safe a Lotus. Lokacin da na ga gidana a karo na farko, ranar Laraba ne da yamma.. "