only way your goin to get 20 mins is with lipo batts. even then im not sure if it would make 20. Depends on your driving style.

rock crawler ppl say they get an hour runtime wit there txt and clods

u dink its cause of there 55 turn motors? of the slow going of rock crawling?

yep, in crawling the motors turn much slower, less power from the battery.

A lot of times its not the motors moving slow it the gearboxes. In my Clod i can can give it about 75* of throtal and it will only go a couple MPHs with to 17 singels. But that is with 2 gear reduction boxs and 4 8t pinions.

the sport is not a monster truck motor it is a light off road and touring motor. it made my light wheight all carbonfiber cat 3000 fly. but its not going to be a huge performer in an emaxx.