If it has a transmission, like a Traxxas with a built in diff, you would have to ignore the diff gear and just use the transmission ratio. So you would have pinion, spur, trans ratio, and tire diameter used in the equation.
You basically have to find every input and output shaft and know the...
One thing that would be cool, but I am sure very time consuming to put together would be an RC paint page, so we can see all the available colors from Parma Faskolor, Createx, Tamiya, Pro-Line, etc. I have been thinking about doing a thread on here, but I'm just too lazy 😜 Maybe one of these days.