Providing enough steam to power train heat and some air conditioning systems on postwar trains taxed the standard water supply of EMD F units set-up for passenger service, prompting EMD to rollout the new FP7 in 1949. Though outwardly similar, FP7s were actually four feet longer to accommodate bigger water tanks with a capacity of 950 US gallons. Standard passenger power into the Amtrak era and beyond (with some also handling freight chores), these WalthersProto HO replicas are fully assembled and ready for service with: New tooling matches the prototypes extended frame and body Available with ESU LokSound 5 Sound and DCC for DCC and DC layouts Railroad-specific details Limited edition - one-time run of these engine numbers Five-pole, skew-wound, high-torque, high-efficiency can motor Helical gears with 14:1 ratio for smooth, ultra-quiet running Easy multiple-unit operation Proto MAX(TM) metal knuckle couplers Based on former Southern Pacific FP7s acquired by Amtrak, these highly detailed WalthersProto HO replicas feature: Nathan M-5 horn Whip-type radio antenna with conduit Original SP-style snowplow pilot Upper headlight with twin sealed-beam (operating) and red emergency (UDE) lights (nonworking) Mars light Working rear back-up light Frame-mounted equipment box Rooftop photo-etched icicle breakers front and rear The matching F7B includes: Working back-up lights at both ends Lifting lugs at both ends Partial body skirt
