[Tachyon]

Originally Posted by rose0529

I raced the '70 Challenger on monday, and got to the point where i could lead the deep forest raceway for the first 4 3/4 laps and that little white thing comes out of no where and beats me by 2 seconds. I don't understand where it comes from!!! I'm tempted to start making extra PSN accounts with 1970 bday's to try and get that white thing gifted to me as a bday present!!

The little white thing:

The most unusual Chaparral was the 2J. In addition to a powerful 700 hp engine, and a three-speed semi automatic transmission, the back of the 2J housed two 17-inch fans driven by a single 45 hp snowmobile engine. The Can Am Series had no engine size limit, so the snowmobile engine wasn't affected by an engine displacement maximum.

The purpose of the fans was to 'suck' air from under the car to provide downforce. This gave the car tremendous gripping power and enabled greater maneuverability at all speeds, which cannot be achieved by simpler aerodynamic devices such as diffusers and wings.

Since it created the same levels of low pressure under the car at all speeds, down-force did not decrease at lower speeds. With other aerodynamic devices, down-force decreases as the car slows down or achieves too much of a slip angle, both of which were not problems for the 'sucker car'. It also had ground effect Lexan-plastic skirts to keep air from leaking in, a technology that would appear in Formula One several years later.

Hacker...