sentences:  Bell has tried several incarnations of a twin-engine version of its successful Bell 206 series.The "TwinRanger" name dates back to the mid-1980s when Bell first considered developing a twin-engine version of the LongRanger.The "Bell 400 TwinRanger" featured a reprofiled fuselage, two Allison 250 turboshafts, the OH-58D Kiowa's four-bladed main rotor, and a new shrouded tail rotor.