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Mac Attack – I look forward to following your progress!MvM - The OEM 1997-2001 front spoiler is probably the best you can get to minimize drag for a pop-up headlight NSX. If you want to maximize front downforce at the cost of higher drag, get a deeper spoiler.According to textbooks, if your car does not have a completely smooth underbody, you’ll minimize drag if the front spoiler is almost the lowest point of the body around the car’s middle and is as deep as you can live with in front of the wheels. Those are exactly the principles Honda followed when they redesigned the front spoiler in 1997. Even with a 2002+ NSX-R front undertray, an NSX still has a very rough underbody behind the passenger compartment so even then, the OEM 1997-2001 front spoiler is probably the best you can choose to minimize drag. If Mac Attack builds a completely smooth underbody from bumper to bumper, it may be best for him to cut out the center section of the OEM 1997-2001 front spoiler lip. Not only might that decrease drag a bit but the additional mass flow along the car’s centerline should increase the airspeed beneath the car and may net him additional downforce.That’s just textbook advice, though. Only computer simulations and physical testing would let you optimize all the details and let you know whether it actually holds in the case of an NSX.
Mac Attack – I look forward to following your progress!
MvM - The OEM 1997-2001 front spoiler is probably the best you can get to minimize drag for a pop-up headlight NSX. If you want to maximize front downforce at the cost of higher drag, get a deeper spoiler.
According to textbooks, if your car does not have a completely smooth underbody, you’ll minimize drag if the front spoiler is almost the lowest point of the body around the car’s middle and is as deep as you can live with in front of the wheels. Those are exactly the principles Honda followed when they redesigned the front spoiler in 1997. Even with a 2002+ NSX-R front undertray, an NSX still has a very rough underbody behind the passenger compartment so even then, the OEM 1997-2001 front spoiler is probably the best you can choose to minimize drag.
If Mac Attack builds a completely smooth underbody from bumper to bumper, it may be best for him to cut out the center section of the OEM 1997-2001 front spoiler lip. Not only might that decrease drag a bit but the additional mass flow along the car’s centerline should increase the airspeed beneath the car and may net him additional downforce.
That’s just textbook advice, though. Only computer simulations and physical testing would let you optimize all the details and let you know whether it actually holds in the case of an NSX.
