BLI 7620 HO Scale GS-4 Southern Pacific 4438 In-Service Black Paragon4 Hybrid Servo Parts Prototypes in service from 1950s

Prototypes in service from 1950s to 1990s

roller bearings and bell cranks

Spektrum™ engineers also gave the transmitter extra water-resistance*

(6) 17x26x5

BLI 7620 HO Scale GS-4 Southern Pacific 4438 In-Service Black Paragon4 Hybrid Servo Parts Prototypes in service from 1950sBLI 7620 HO Scale GS 4 Southern Pacific 4438 In Service Black Paragon4 Hybrid The Southern Pacific GS 4 locomotives were a class of 4 8 4 "Northern" type steam locomotives operated by the Southern Pacific from 1941 to 1958. The SP owned a total of 28 GS 4 engines, numbered 4430 through 4457. The GS 4's were quite similar to the SP GS 3 Northerns, except with the GS 4, the SP introduced a dual headlight casing, with the top light being a Mars light,