Race report

PDF File

1. When you say "rounded edge of piston" is that both edges or just the bottom edge? Oh and how much, small rad, half piston thickness, full piston thickness?
I round both edges of the piston to improve small bump performance. In terms of how much, it's a small amount of around 1mm... basically trying to model the old Losi pistons.

2. I presume you ran the ball diff?
Yes I did use a ball diff