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During the final days of Southern Pacific's narrow gauge operations, the company augmented its roster of aging steam power with a relatively modern diesel. A 50 Ton narrow guage GE exprot model and sent out to desert Owens Valley. Numbered "X-1", and sometimes referred to as the "Little Giant," this unit came to dominate its operating area. RMI offers this muscular unit in 2.5" or 3.75" scales in either electric, gas, diesel or propane / hydraulic versions. This heavy hauler is perfect for club or commercial operations. 

Renently one of the export units has returned to the US and is now restored and running on the Sumpter Valley!  We are offering this unit in that paint job! Just add a note in the comment section on the order form that you would like it painted as "Sumpter Valley #720"


  • Solid riveted cab
  • All steel construction
  • Axle-mounted, heavy duty
    industrial gear boxes
  • 5/8 hp, continuous-duty,
    4-brush 24Vdc motors
  • Solid-state programmable
    control and power modules
  • Options:
    • Premium Sound System
    • Control Stalk
    • 22 hp electric start gas, diesel or propane engine with hydro-static drive system
    • Battery Charger
    • Knuckle Couplers