Quote:
Originally Posted by jtbo
Back of car, underside is quite ugly in aero wise,
I did eye that area and if I put some kind of plane there, it will be almost vertical, so that there is not much rise towards rear, this is perhaps good, was 4 degrees for that area some number to seek?
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A diffusor would help with a sedan or a sloping liftback design, but it increases drag on a station wagon / break / estate kind of car !
I'd keep the belly pan more or less horizontal right up to the rear bumper.