Aerodynamic Forces

2015 Rules: Track Records I – The Example of Charlotte

@NASCARRealTime, @TheOrangeCone and @CircleTrackNerd had an interesting dialog when the 2015 rules were announced. They were debating whether the track records that are now standing are going to be essentially locked into history. The debate ended with an appeal to me and Goody’s Headache Powder. […]

Brakes

The Zen of Brake Bias II

In the last blog entry, I explained what brake bias was and how it could be used to improve the car’s handling during green-flag runs. This time, let’s look under the hood (or I guess, more accurately, under the dash) and see how this is accomplished. […]

Brakes

The Zen of Brake Bias

With all the talk about giving the drivers the ability to change aspects of the setup from within the car, I thought some comments on what types of changes they can make would be appropriate. […]

Aerodynamic Forces

Dive! Dive! Dive Planes… on Stock Cars?

A persistent motorsports issue (and not only with stock cars) is the aerodynamic passing problem. You can’t pass without grip. Grip is a direct result of downforce. Downforce comes from two places: the weight of the car (mechanical grip) and the billions and billions of air molecules hitting the car (a.k.a aerogrip). […]

Andy Randolph
Aerodynamic Forces
Asphalt

In the Zone: Goodyear’s New Tire Design

Kansas marks the second appearance of Goodyear’s “Multi-Zone Tread Tire”, which was first used at Atlanta Motor Speedway over Labor Day weekend. Stop for a moment to appreciate the challenge Goodyear has to face each […]

DNFs
Gen-6

Notes on Respect and Fines

A short note on Denny Hamlin’s comments on the Gen-6 car and subsequent fine.

I’ve talked to a lot of the people in the trenches involved in designing and creating the Gen-6 car. That includes people from manufacturers and teams. All of them have said that the development of the Gen-6 car is a major sea change for NASCAR. This is the most collaborative that NASCAR has been with introducing a new car in some time. Manufacturers and teams were consulted and they all feel that their opinions mattered and were taken into consideration. This was a very, very different process than the COT introduction, which was designed by NASCAR and plans delivered to teams. […]

Engines

Eliminating Restrictor Plates?

Every return to a restrictor plate track brings suggestions about how we might eliminate the restrictor plate. Restrictor plates serve the very necessary function of limiting car speeds at Daytona and Talladega so that the cars stay on the ground. The negative is that they remove throttle response. One suggestion from some readers that I hadn’t heard of before suggested that NASCAR could just change the rear-end gearing parameters to shift the power curve and reduce horsepower that way. Will that work? […]