This Broadway Limited Class S2 6-8-6 Turbine locomotive is based on the world's first and only locomotive with a 6-8-6 wheel configuration was introduced in 1944. The Pennsy Railroad's S2 direct-drive steam turbine powered locomotive was a unique experiment in motive power. Its six-wheel leading truck, eight drive wheels, and six-wheel trailing truck made for a massive running platform that was quite efficient when the S2 was at speed. This brass-hybrid engine features a brass boiler, cab and tender body, plus a heavy die cast chassis. This model has full Paragon4 sound and DCC with a GoPack for realistic, reliable sound and motor control. The Paragon4 sound system works with all Broadway Limited Rolling Thunder(TM) advanced sound systems. Other features include a smooth-running flywheel-equipped drive, era-appropriate detailing and magnetic knuckle couplers. The Class S2 6-8-6 can be operated on all DCC systems as well as on standard DC railroads (with limited sound functionality). This model has wheels profiled to operate on Code 70 and larger rail and curves of 22" radius but larger curves are recommended. The Class S2 6-8-6 is one of many Broadway Limited HO Scale Paragon4 locomotives.