 Pari gbolohun ti o tẹle: Biotilejepe Brabham ṣe idanwo pẹlu awọn airdams ati awọn aṣọ abẹ abẹ abẹ ni aarin ọdun 1970, ẹgbẹ naa, bii iyokù aaye naa, ko loye lẹsẹkẹsẹ idagbasoke Lotus ti ọkọ ayọkẹlẹ ipa ilẹ ni ọdun 1977. Brabham BT46B Fan car ti ọdun 1978, ṣe ipilẹṣẹ agbara agbara nla pẹlu afẹfẹ kan, eyiti o fa afẹfẹ lati isalẹ ọkọ ayọkẹlẹ, botilẹjẹpe lilo rẹ ti a sọ ni fun itutu ẹrọ. Ọkọ ayọkẹlẹ naa sáré lẹẹkan ṣoṣo nínú ìdíje Formula One World ChampionshipNiki Lauda gba ife ẹyẹ náà : 1978 Swedish Grand Prixṣaaju ki o to kan loophole ninu awọn ofin ti a ti pa nipa awọn FIA. 