There is then no structure to hinder the airflow, until the air passes around the rear wing support, which now doubles up as the top rear wishbone mounting. Thus with the Williams the air flows over the upper body and around the engine cover, the bodywork then curves in behind the engine and airbox in a sharp “V”. If they can be sufficiently stiff, then this area can be removed. So although it serves a structural purpose the stiffen the suspension mounting points.
Without this hardware mounted so high up, the area above the gearbox is just a void. By going to a Pullrod set up, the rockers, torsion bars and dampers that normally occupy the space above the gearbox are sited low down at the side of the gearbox (see ). In fact Williams Design team have completely rethought the rear suspension and gear case. In order to gain the maximum flow towards the lower beam wing, Williams have removed a large part of the gearbox case (as described in the below illustration shaded yellow) ,lowered the differential and reworked the rear suspension. Until the area above the gearbox is looked at. Williams said their new car would be aggressive, but at first look the FW33 seemed quite conventional.
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