E maxx Flm ultimate bulkhead
 

whats up guys im having a bit of a dilemma with my flm maxx build. so if all four wheels are on the ground i cant push the truck, but if only two are down front or rear it rolls fine. Any clue on whats happening?

Did you make sure to orient the diffs opposite eachother? If you put the ring gears both on the same side, the front/rear will spin in opposite directions and the truck won't go anywhere.

ive never built any diffs or anything. this was my first time and i had no instructions. so that does seem like the problem. how do i fix this. thanks for the help

The orientation of the differentials, must be flipped when viewed from above. So if the ring gear is on the left in the front, it should be on the right in the rear. Otherwise when the motor tries to drive the truck, the front might try moving the truck forward but the rear would drive the truck in reverse. The transmission 'fighting itself' which leads to it feeling bound up when you try to roll it.

Calibrate the ESC and pick the truck off the ground, and apply throttle. Whichever end drives in reverse, remove that differential and flip it over. Rebuild and you're good to go.

thanks bro you helped me out greatly. i appreciate it.