How Tracks Take and Lose Rubber
The two words we heard most frequently last week in Pocono (after “still raining”) were “green racetrack”. Rain doesn’t just delay racing. When the race is finally run after a rain delay, it’s run on a different racetrack. To get the details of how a racetrack changes from “rubbered up” […]
Goodyear Tracking Change
Repaving is the last possible remedy a track wants to use, but when potholes (see: Daytona) show up, there is no choice but to tear up the old asphalt and replace it with new, fresh blacktop. In the last few years, Daytona, Phoenix, Michigan, Pocono and Kansas have all been […]
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 race. They must design a fast, durable and safe tire for each track on the […]
Are Cautions Really Going Down?
I honestly cannot help it – scientists are naturally skeptical. If you make an assertion, I will have to question you on what data you have that supports it. This is second nature to the people I work with, but I realize it is damned irritating to non-scientists (aka “normal”) people.
So when I started reading everywhere that “cautions were down 35%”, I had to go look into it. This is a preliminary post – more detailed analysis will follow as soon as I’ve read my students’ final projects and gotten comments back to them.
Potholes in Atlanta?
There was an interesting comment during practice this morning from Jeff Hammond (channeling Darryl Waltrip) about dark spots on the track, which indicate (he said) the cars were “knocking off” asphalt. I received a number of questions about this and whether it might indicate that Atlanta could have the same […]
The ABCs of Flying Cars: Aerodynamics, Brad and Carl
It is much harder to keep cars on the ground than it is to keep drivers from wrecking each other. You can’t call ‘air’ to the hauler…
Treading Lightly: Tires at Indy
Tire problems again, but the issue here was different than the tire problems we saw in Atlanta earlier in the year. At Atlanta, the tire was too hard. The drivers complained that they didnt have enough grip to race. That wasn’t the problem today. Lets look at the anatomy of […]
The Science of …Tires, Part II
Tires: What Goodyear Can’t Control Ive reproduced the figure from yesterday to reiterate that there are two factors that determine grip: the interaction between the track and the tire, and the force pushing down on the tire. In part I, we covered the interaction between the tire and the track. […]