Hi. When I do GetComponent().velocity = new Vector3(speed, 0f,0f); in Start function to a Unity Cube, the cube moves well. However when I do the same in a own object (model with 3d Studio) the object stop.
I have created a physic material without friction and the gameObject rigidbody properties (Unity cube or my own gameObject) have Drag 0, Angular Drag 0, gravity enabled and isKinematic disabled;
Thanks and sorry for my English level