Aerodynamics

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How Fast Would NASCAR Cars Go at Daytona without Restrictor Plates?

Doug Yates was guest on Dave Moody’s SiriusXM Speedway last week. He brought up a conversion you hear a lot in the week before Daytona and Talladega. Every 25 horsepower in the engine translates to about a 1 second decrease in lap times. Dave did the math: Removing the plates would increase the engine by 450 horsepower. Four hundred and fifty more horsepower equates to 18 seconds off the lap time, assuming all other things equal. That last part was a very important qualification. It will come back to haunt us in a moment.

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Next-Gen Tires: Chewy on the Outside, Crunchy on the Inside

Listen to SiriusXM NASCAR radio, or peruse any of the racing websites and you will find a lot of theories about how races should be changed to make them ‘more exciting’. To try to amp up the All-Star Race, NASCAR went with four 20-lap segments, followed by a realignment (the cars were ordered in rank of average finish over the first four segments) and a 10-lap shootout. With no series points on the line, that should have made for an exciting evening of hard driving and competitive racing.

Or not.

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