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Southern Pacific classes F-3 and F-4
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USA | 1921
65 produced
No. 3701, probably in Sacramento
No. 3701, probably in Sacramento
collection Taylor Rush

After the class F-1 2-10-2s, the Southern Pacific ordered 15 F-3 in 1921 from Lima. They had larger cylinders, a larger boiler and had a trailing truck booster like their predecessors. Like most SP steam locomotives, they were oil-fired. To improve running characteristics in curves, they got lateral motion boxes on the lead drivers.

Since the SP didn't want to use the name „Santa Fe” for this wheel arrangement and didn't have real Decapod locomotives, they called all their 2-10-2s “Decks” as short form for “Decapods”. In 1922, they ordered 50 very similar locomotives from Baldwin which were designated class F-4 and delivered in a single train.

All 15 F-3 were converted to coal burning in 1924. Between 1940 and 1944, they were converted back to oil burning. Both classes were retired between 1951 and 1958.

Allgemein
Bauzeit1921-1922
HerstellerLima, Baldwin
Achsfolge2-10-2 (Santa Fé) 
Spurweite4 ft 8 1/2 in (Normalspur)
Maße und Gewichte
Radstand42 ft 4 in
Fester Radstand22 ft 10 in
Gesamtradstand82 ft 7 1/2 in
Dienstmasse385,900 lbs
Reibungsmasse297,300 lbs
Gesamtmasse607,900 lbs
Achslast59,500 lbs
Wasservorrat12,000 us gal
Brennstoff4,000 us gal (Öl)
Kessel
Rostfläche82.5 sq ft
Strahlungsheizfläche381 sq ft
Rohrheizfläche4,722 sq ft
Verdampfungsheizfläche5,103 sq ft
Überhitzerfläche1,329 sq ft
Gesamtheizfläche6,432 sq ft
Triebwerk
Ø Treibräder63.5 in
Kesseldruck200 psi
DampfdehnungEinfach
Zylinderzwei, 29 1/2 x 32 in
Antrieb
AntriebDampf
Geschätzte Leistung3,350 hp (2,498 kW)
Opt. Geschwindigkeit29 mph
Anfahrzugkraft74,554 lbf
Booster10,800 lbf
Berechnete Werte
Dampflok
Güterzug
Booster
last changed: 06/2024
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