We had a race this past weekend where I ran 1/12th for the first time in 11 years. The only class offered was 1s blinky 17.5. While the action was good, it was not very exciting to drive. Even on a not-so-great parking lot surface, the cars needed more motor. We are looking in to switching our local class over to 2s. I think there was only one or two people who had an ESC with a built-in booster. I personally ran a receiver pack.

What experiences have you had with 2s in 1/12th? We were thinking starting out with 21.5 to make sure they aren't out of control fast. Any ideas where to start with gearing/rollout on 2s?