Rubuta ci gaba don wannan sakin layi - Tare da nasara a Hockenheim, da Schauinsland Hillclimb, da Grenzlandring, Ulmen ya kasance zakara a cikin rukunin Motocin Wasanni na lita 2. Ya halarci gasar cin kofin duniya guda biyu a shekarar 1952, ya fara fitowa a ranar 18 ga Mayu, 1952, a cikin Großer Pries der Schweiz, amma ya yi ritaya saboda matsalolin tankin mai. Ya dawo ne domin ya lashe Grand Prix na Jamus.
, inda duk da rashin amfani da karfin Veritas dinsa idan aka kwatanta da abokan hamayyarsa, ya gama na takwas. Wannan kakar kuma ta ga Ulmen ta sake lashe DMV Grenalandringrennen. A lokacin kakar, ya sha wahala a cikin wani mummunan hadari a lokacin horo a kan Sachsenring wanda ya tsere kusan ba tare da rauni ba. Ya isa taron ƙarshe na kakar 1952, Avusrennen, a matsayin jagora a cikin aji na Formula 2 da motocin wasanni na lita 2. A kan AVUS, ya rasa gwagwarmayar gwagwarmaya mai ban mamaki tare da ɗan'uwansa Veritas, Fritz Rieß, a zagaye na ƙarshe. Wannan yana nufin duka direbobi biyu sun daidaita a maki, kuma bisa ga dokokin DMV, an ayyana Rieß a matsayin zakara, kamar yadda ya ci nasara a Eifelrennen. A matsayin ƙarfafawa, an ba Ulmen lambar yabo ta Formula 2, duk da cewa zai iya shiga cikin wannan tseren. Bayan haka ya yi gasa ne kawai a wasu lokuta a tseren mota.