Originally Posted by AM03GT
depends on the 19T...
i run Reedy Quad-Mag 19T at ~5.7-5.8 FDR
100T Spur i'd start with a 43T pinion
in general if i run a 2-magnet 19T like a trinity chameleon i start 2 teeth lower and work from there...
i know it sounds a bit crazy since ususally the lower the turn motor the smaller the pinion, but this is what works for me...
How big are the tracks that you are running on? I have never ran a 40-100 on a C2. with todays batteries I would think that anything this high would come off the track at 300 degrees and would loose punch around 3 minutes