Originally Posted by
gooba
depending on track size you'll want to start with a 4.0 fdr and adjust from there. I believe my car runs 60spur 38pinion which nets a fdr of 3.94. You can also run a 55t spur and drop a few pinion teeth. robinson racing is the gears i use
does a FDR of around 4.0 apply to any 17.5 motor setup?
so suggestion is to start at 4 and go up in FDR ?
thanks!