When Rally America returns to the pine-filled forests of northern Minnesota for the Ojibwe Forests Rally, it’s pretty safe to say no one will be happier than Lauchlin O’Sullivan, driver of the Lucas Oil, Wolf LED-sponsored Super Production Subaru WRX STi, and his co-driver and team owner, Scott Putnam.
For Putnam, it’s a chance to compete on the national stage in his home state once again. And for both guys, it will be the culmination of a huge effort to rally back to the series with a rebuilt car after a rollover at the Oregon Trail Rally.
That story is an interesting one, and worth telling here.
It’s all about the Gs baby. No, we’re not talking about the rap song by Big Bang. We’re talking about the measurement of gravitational forces acting on objects such as the human body.
At launch for example, the Space Shuttle astronauts experienced 1.7 Gs.
In a rally car rollover, such as the one Lauchlin O’Sullivan and Scott Putnam endured at the Oregon Trail Rally, they experienced 2 Gs, and for a brief time, exponentially more than that.
There is in fact a mathematical formula to measure this combo platter of G-forces, kinetic energy and violent speed changes the two Rally America competitors and their Subaru were subjected to.
Notice the difference in how these cars come through this particular corner. Subaru’s David Higgins comes through cleanly, we have a flat on the passenger side rear which causes our car to be very loose. The flat tire shredding is what is tearing the bumper skin off.