Respectfully, I reckon 0.32 Cd for a 120Y is very optimistic. I'd expect late
model hatchbacks to be about this or probably worse, and that's with modern
curved panel construction and hundreds of wind tunnel hours at the prototype
stage.
Even slick new cars are lucky to beat 0.30, so I'd be thinking 0.4x for our
'70s sedans, maybe high 0.3x for a 120y coupe.
Just my opinion of course, but I have seen a bit of wind and water tunnel work
in my time here at Uni of Ad, and it's the little turbulences and boundary layers
that build up on flat panels and in recesses that bump the drag right up, and
old Dattos have heaps of both.
DF
PS - don't you just love seeing someone who paid $30k+ for a new car with a
0.29 Cd, and then added 0.02 right off the bat by chucking on a spoiler for
the sake of 200 grams of downforce ?
>Its the atmospheric drag generated by your car's body shape.
>An streamlined car body with a low CD would measure in the high 2's. A =
>120Y coupe would be around 3.2 at a guess, a sedan may be .2 higher =
>again.=20
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