storing spare engines

the big problem with making anything movable is your dealing with dirt. i made a few out of shopping carts as well, and i left the handles on and fabed motor mounts so the motors were attached to the carts. it might be worth it to pour a bunch of bags of cement where your going to store the motors. if you need to move them to another spot, pour more cement, and before you know it, it will be an all cement floor.