Originally Posted by J-VET

I got a 21.5 and a 64p adapter for my F104. I was told a 89 or so roll out is a good place to start with a sphere tc esc. Is there a good size spur to run so I can make adjustments using my pinion? Or some recomended spurs and pinions to keep on hand. I'm new to roll outs, so any help would be great. One more question, How much of a difference in roll out makes a noticable difference? Do I need to re-gear every time my tires wear 1mm? Just in case it mattters I run outdoors in Camarillo most if the time.

Any help would be great, and if i'm heading in the wrong direction let me know.

Thanks in advance,

Jeff