I built this dump truck, because I have an excavator and the LEGO bucket wheel excavator, and I just needed a truck to have the complete construction side vehicle park. This truck has 3 axles, one in front and two rear. It has one xl motor to keep the truck going forward, one L motor to power the bed lift cylinder and a servo motor to steer. Its powered by Sbrick because it needs to have more than one speed to operate with the truck, otherwise, it would be so hard to operate the truck at small places. Here is the link for the video of it, I hope you like it.