First race report, and first day of asphalt racing for the season.

I started with a mix of various setups, mainly based on the setup posted by Sandy Iavazzo. Main differences in my setup were to go softer all the way around, starting at about 75 gf/mm in front and 82 in the rear (f: a2, b2; r: a3, b2) srs/rhs II for both. I was also running .5mm of anti-squat and anti-dive. My theory was that the car's center of gravity is very low, so run the car soft to get roll but don't let it dive/squat real hard. I also ran a regular weight body to raise the center of gravity a bit.

Right off, given the track temperature, I was overheating tires running that soft, I was also getting far too much body roll. I went a bit stiffer, to around 82/88 front/rear mix, and the car was better, but still a little unstable, though the tire temperatures were better, not fading toward the end of the race.

Eventually, I ended up removing both the anti-squat and anti-dive, and the car was much more predictable, and responsive. I also ended up putting a front anti-sway bar on, making the front-end a bit more responsive. This unfortunately, though somewhat predictably, took away a bit of rotation. I then added a bit more toe-out in the front, and took out a little bit of rear camber. Also ended up adding a 1/2mm of camber gain, compared to Sandy's setup. Finally ended up a bit stiffer spring and more dampening all the way around, settling around 90f/98r.

In the end, Sputnik and I ended up qualified 3rd, and finished fourth. Tough racing with some fast racers here at NorCal.

I'd still like to try lower roll centers, going to 0mm under the arms, and of course try IAS as well. Final setup attached.

Thanks for reading this far, interesting day of racing, and I'm happy with the results, more work to be done.

PDF File