Reply To: Roller Coaster Home › Forums › All Things LEGO! › Roller Coaster › Reply To: Roller Coaster January 12, 2018 at 6:24 am #25552 Jack RimerParticipant That’s not our system. In fact, judging from the track, I don’t think it even functions. The transitions are not smooth enough for a train with no upstop wheels to negotiate the circuit.