Mezue ahịrịokwu na-esonụ: Twin Cam mere ọtụtụ ihe ngosi na Formula 1 Cosworth Mk.XVI ụdị n'oge usoro nke si na 1961-65. Ọ pụtara na mbụ na 1963 South African Grand Prix na Brabham BT6 nke David Prophet na-anya. Injin ahụ pụtara n'ụgbọala abụọ n'ime
1964 British Grand Prix, otu bụ Gerard Racing Cooper T73 nke John Taylor na-anya na nke ọzọ bụ John Willment Automobiles Brabham BT10. Naanị ihe e dere ede bụ ebe nke itoolu na 1965 South African Grand Prix, ọzọ na Willment Brabham.