Originally Posted by blueb8llz

i chose 7xl becuase i hear alot of ppl are running 7xl with no problems. i mean they say there motor gets hot, but its fine. but main thing is i KNOW i dont run nearly as hard as any of them either. i rarely do speed runs, i pretty much only full throttle it only for like 3 secs and then i let off. i just like to go up hills and go over terrain. but i jus like the speed of bl so when i do feel the need for speed i can.
oh, ill be running 2 packs 2s. and is there a difference when ppl lower the spur instead of raising the pinion. i know the pinion is more costly but say...if 24t/68spur got me 42mph, and 21t/62spur got me 42mph, how come i always see more ppl lowering the spur and pinion when they could have just changed one thing which is the pinion. does having a lower spur count reduce temps, run smoother, more effieciant or something.