Snowbirds update- There were 5 12x cars in the 27T main, 2 in 19T and 3 in modified. all with different drivers. So 10 out of 30 spots in the 1/12 scale mains were Corally SP12x cars, driven by 10 different racers.
Jeff Brown's setup (TQ 27T):
Tires: Jaco lilac front, 1.60 " and yellow rear, 1.71", full front and 1/2 rear tire sidewalls glued with CA
Front suspension: Corally WC (same as Assoc. dynamic strut) with 10 degree reactive caster blocks, 2 spacers rear and 1 front, 1 1/4 degree camber, raised steering arm ballstuds, threaded axles from Parma
Front springs: .020
Servo mounting: flat, rear mount (ballstuds for steering arms facing forward)
Front width: 165 mm at top of tires
Toe in/out: 0 degrees
T-bar: Corally 2mm, with center screw on rear pod removed and spacer cut to only have spacers under 2 pod mounting holes, no spacer under front pivot ball
Center shock: IRS VCS shock, front mount raised 1.5 mm and rear mount moved back 6 mm, 25 wt Assoc. shock oil, olive center spring
Ride height: 3.5 mm, chassis level when race ready
Rear pod droop: this is checked by lifting center shock rear mount and measuring height at rear of main chassis. Difference between static ride height and lifted height was 1 mm
Rear width: 171 mm
Chassis: stock kit chassis
Speed control: Novak GTX
Batteries: Team Kwik Ener-G 4600 NiMH (Note: the SAME pack of batteries was used twice in practice, in all 4 qualifiers, practice the morning of the main, and in the main
Motor: handout CO 27T tuned by Team Kwik
The carpet was high bite, and very smooth. Bumps were not an issue.
Let me know if I forgot to mention anything!