Originally Posted by
TonyK
What I thought about doing is running a 21.5 in the car. I really would like to learn setup before I start bringing in speed.
That's pretty smart and not something I usually hear. Usually it's, "What's the fastest motor I can use in this?" or something to that nature.
That said, 17.5 is very easy to drive in 1/12th and is a great place to start for someone just beginning. If there is a 17.5 class where you race, I would run that. If you want to be faster than everyone else, just don't hit anything.