racer oZ-I would narrow the brush .30mm
jkerr0043- Both brushes. I have been to RC Heat once, the weekend before the Reedy Race. Definitely run hard springs and sprint brushes with the timing at the third line. Good Luck!
Kyosho America, Team Orion, Peak Racing, AKA, KO Propo, DiBrino Designs, JTP, RCE, Rockstar Energy Drink, www.thebigrc.com, Portland R/C Raceway (www.prcr1.blogspot.com)