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aerohead · 07-31-2010, 02:26 PM

According to CAR and DRIVER magazine's experiments with Z-Cars in 1974,removing the spoiler will cause increased drag and loss of mpg.
The backlight angle is just too fast,and as lunarhighway has mentioned,the spoiler tricks the air into thinking that the hatch has a more gentle slope.
The 1978 ZX has an aft-body of 41.5% of 'Template.'
If the back of the Z-car was fleshed out up to the 'Template' curve and it had a decent windshield,you could get the Cd to 0.202.

07-31-2010, 02:26 PM	#5 (permalink)
aerohead Master EcoModder Join Date: Jan 2008 Location: Sanger,Texas,U.S.A. Posts: 16,228 Thanks: 24,375 Thanked 7,357 Times in 4,757 Posts	remove it and lose According to CAR and DRIVER magazine's experiments with Z-Cars in 1974,removing the spoiler will cause increased drag and loss of mpg. The backlight angle is just too fast,and as lunarhighway has mentioned,the spoiler tricks the air into thinking that the hatch has a more gentle slope. The 1978 ZX has an aft-body of 41.5% of 'Template.' If the back of the Z-car was fleshed out up to the 'Template' curve and it had a decent windshield,you could get the Cd to 0.202.