RE: How can I speed up my E-MAXX without going brushless?
Good battery packs make a world of difference. Just going from some ok 6-cell packs to something like IB4200 6-cell packs will really wake the truck up. And if you go dual 7-cell packs with good batteries it's even better. I bumped the motor pinions up to 20 teeth and gained a fair amount of top speed. I also had the Novak Superduty XR ESC, so it could handle it. I wouldn't recommend gearing up and using 7-cells with the EVX. The EVX2 should be able to handle it though. A guy I work with put dual 12 turn titans from the newer Stampede in his E-Maxx and said it was crazy fast. But the motors couldn't handle the voltage, so they didn't last long. They may be ok at say 10-cells total though.