Kato USA Model Train Products Union Pacific FEF-3 Steam Locomotive #844 Train Coreless motor design with dual brass Flywheels for silky-smooth performance at all speeds, even slow crawls Special cross-braced shock absorbers equalize the pressure on the locomotive drivers to maximize traction Illuminated headlight and locomotive number boards DCC friendly design, allowing for easy drop-in installation of DCC. All detail parts installed and ready-to-run! 11" (282mm) minimum turning radius on ground level track, 15" (381mm) minimum turning radius on viaduct track.