XRAY - Model racing cars

hi all

i am racing 17.5 blinky soon and need a fdr around 3.5 ish and was after some advise on what spur/ pinion to go for .

the track is around 100 meters x 70 meters and a fast flowing track

tekin rs pro and 17.5 gen 2 motor

thanks

Buy some RW spurs for the Xray from Demon Products 67 or 68 tooth with a 37/38 tooth pinion should be about right.

You cannot get that type of ratio with true Xray Spurs they don't make them small enough (not enough demand they say )

I use arrowmax 92t 64p when running such low ratios.