EF-4 "Little Joe" Chassis

Locomotive chassis to turn your EF-4 into a runner.  Designed to utilize mechanism components from Kato SD90 locomotives.  Some modifications may be required to dial in performance.  Worm gear covers double as weight wells - fill with lead buckshot/glue or tungsten putty to improve traction and pulling power.   Since this is not a split metal frame design, you'll want to add as much weight as you can.