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Wow, that sucks!j/k.
Yeah, i guess i'd rather race a car that creates its downforce naturally... the thought of artificial downforce caused by a snowblower engine frightens me...if one of them fails, you'd hope your kids have some serious life-insurance coming their way.
Engine failure is a problem with mechanically produced downforce such as that used in the 2J (and also the Brabham BT...ummmm 49 or maybe 52 or something). However, it has two safety advantages over a car with downforce produced naturally due to its shape and speed.
ADVANTAGE 1: The bits that make it all work are mostly internal and within the wheelbase, making it less prone to damage from light impact with other vehicles.
ADVANTAGE 2: It works at any angle. The wings on a formula car work best when the airflow is parallel with the cars longitudinal axis. This means that the more sideways an F1 driver gets his car, the less downforce he has. So, the more out of shape he gets, the less grip he has to recover his situation
The 2J may not have done so well, but the Brabham showed the superiority of fan assisted downforce when Niki Lauda gave it victory in its one and only race. In that race, he beat the Lotus 79 - the Black Beauty, and the original F1 ground effects car (the 78 was more of an inverted wing car), and a car doing well because of its high levels of downforce - in its championship year. Mario Andretti was driving the 79 when Lauda overtook him on what Andretti described as "an impossible line".
EDIT: hey I just noticed... I've been elevated to level of prime villain in an Austin Powers movie. Shagadelic, baby!