Quote:
Originally Posted by some_other_dave
A lot of the sports-racers from the 70s (e.g., Porsche 917K, Ferrari 512) had the fender cut away aft of the rear wheels. Not sure if it was more for down-force or if it helped drag.
-soD
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917 and the 512 did that to get rid of all the exhaust heat back then. They did know about wheel well aero resistance but they only did something in the front, look at your image can you see the louvers at the top of the front wheel arches? That was to vent it off. CanAm cars had the same thing. Till the Lotus 79 came out, there wasn't too much attention paid to anything after the rear axle in the early 70's. Wouldn't mind taking the 917 for a lap at the Ring though.