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When we think tuning, we usually start contemplating tire compounds, shock oil, springs, camber, roll centers, droop, and a whole lot more. The list is almost never-ending, and these settings can all impact handling, but there’s a great device, literally right at your fingertips, that can be one of the best tuning tools available. I’m talking about your transmitter. Inside programmable transmitters such as the Spektrum DX5 Pro are a variety of adjustments that can take an RC racecar from also-ran to winner.
THE BASICS
Before we get into some of the tuning, let’s get through some basics.
Sub-trim: I almost never use regular steering trim, but I do use sub-trim every single time I set up a car or install a new servo. I use sub-trim to properly center my servos. I don’t use trim. I use trim on my RC airplanes in flight. It really doesn’t need