Union Pacific 18

Union Pacific 18 (HMQ8D)

Location: Union, IL 60180 McHenry County
Country: United States of America

N 42° 13.673', W 88° 31.627'

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1960 Gas Turbine-Electric Cab Unit

Early diesels had relatively low power (800-2000 hp). Beginning in 1948, the Union Pacific and GE developed alternatives for heavy freight. The resulting 55 units replaced the usual diesel prime mover with an aircraft gas turbine.

The last thirty turbines (UP 1-30) were the largest (166 ft) and most powerful internal combustion locomotives ever built, but were not fuel-efficient. The lead unit contained a cab, controls, and an 850 hp diesel to start the turbine and for low-speed movement. In the second unit, the turbine drove two main generators to supply electricity for twelve traction motors. The tender (from a retired steamer) held thick "bunker C" fuel oil for the turbine. All turbines were retired by 1969, as new diesels were developed and fuel costs rose.

UP 18 was obtained from another museum in 1992. Only two turbines survive.

Builder: General Electric
Prime Mover: GE gas turbine
Horsepower: 10,000
Weight (less tender): 839,000 lbs
Axles/Motors: 12 (less tender)/ 12
Service: Freight
HM NumberHMQ8D
Placed ByIllinois Railway Museum
Marker ConditionNo reports yet
Date Added Monday, October 27th, 2014 at 4:38am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)16T E 373978 N 4676207
Decimal Degrees42.22788333, -88.52711667
Degrees and Decimal MinutesN 42° 13.673', W 88° 31.627'
Degrees, Minutes and Seconds42° 13' 40.38" N, 88° 31' 37.62" W
Driving DirectionsGoogle Maps
Area Code(s)815
Closest Postal AddressAt or near 136-198 Depot St, Union IL 60180, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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