[Suicide Junkie]

In order to get a battlemoon to move, IIRC, you need 67 Ion Engines, or 34 Quantum engines.
Just keep piling on the engines, and it'll go.

If you add too many engines, the speed will overflow, and SE4 resets it to zero.
Thus, the maximum speed available is 1mp on a battlemoon. If you have propulsion experts, this becomes 2mp on the system map.