Rubuta ci gaba don wannan sakin layi - A farkon shekarun 1970, dan wasan tsere mai son Yip ya sadu da Sid Taylor kuma ya amince ya tallafawa Vern Schuppan a cikin Formula 5000. Wannan ya jagoranci Yip ya goyi bayan Schuppan a cikin Formula One tare da Ensign a 1974. An biyo bayan ƙarin shiga cikin Amurka tare da Schuppan sannan kuma goyon bayan Alan Jones a cikin jerin F5000 na Amurka a 1976. A Ostiraliya, Schuppan ya lashe gasar Rothmans International Series don Yip yana tuka Lola T332-Chevrolet a shekarar 1976. A wannan shekarar Yip ya kafa Theodore Racing. Taylor ne ya gudanar da shi kuma ya shiga Ensign don Patrick Tambay a F1. Bayan shekara mai wahala a 1977, Yip ya ba Ron Tauranac aikin gina masa motar F1. Motar, wanda ake kira Theodore TR1, ya kasance da wuya kuma Eddie Cheever ya kasa cancanta a Brazil da Argentina
amma sai Keke Rosberg ya dauki nauyin kuma ya lashe gasar cin kofin kasa da kasa a Silverstone a cikin rigar, ko da yake ya cancanci daya GP a Afirka ta Kudu. An yi watsi da motar a tsakiyar kakar wasa. A Amurka, Yip ya goyi bayan kungiyar Dan Gurney ta Eagle.