UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale

71 Minecraft Maps
Big Boy
Reference:[1]
Power type Steam
Builder American Locomotive Company
Build date 1941–1944
Total produced 25
hideSpecifications
Configuration:
 ​
• Whyte 4-8-8-4
• UIC (2′D)D2′ h4
Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge
Leading dia. 36 in (914 mm)
Driver dia. 68 in (1,727 mm)
Trailing dia. 42 in (1,067 mm)
Wheelbase
  • Locomotive: 72 ft 5 1⁄2 in (22.09 m)
  • Overall: 117 ft 7 in (35.84 m)
Length Locomotive: 85 ft 3 2⁄5 in (25.99 m)
Overall: 132 ft 9 1⁄4 in (40.47 m)
Width 11 ft (3.35 m)
Height 16 ft 2 1⁄2 in (4.94 m)
Axle load 4884-1: 67,500 lb (30,600 kg)
4884-2: 68,150 lb (30,900 kg)
Adhesive weight 4884-1: 540,000 lb
(245,000 kg)
4884-2: 545,200 lb
(247,000 kg)
Loco weight 4884-1: 762,000 lb
(346,000 kg)
4884-2: 772,250 lb
(350,000 kg)
Tender weight 4884-1: 427,500 lb
(193,910 kg)
4884-2: 436,500 lb
(198,000 kg)
Total weight 4884-1: 1,189,500 lb
(539,500 kg)
4884-2: 1,208,750 lb
(548,300 kg)
Fuel type Coal (No. 4014 converted to No. 5 fuel oil)
Fuel capacity 28 short tons
(25.4 t; 25.0 long tons)
Water cap 4884-1: 24,000 US gal
(91,000 l; 20,000 imp gal)
4884-2: 25,000 US gal (95,000 l; 21,000 imp gal)
Firebox:
• Firegrate area		 150 sq ft (14 m2)
Boiler 95 in (2,413 mm)
Boiler pressure 300 lbf/in2 (2.1 MPa)
Feedwater heater Elesco TP400 Exhaust Steam Injector
Heating surface 5,889 sq ft (547 m2) (4884-1)
5,735 sq ft (533 m2) (4884-2)
• Tubes 967 sq ft (90 m2) (4884-1)
2,734 sq ft (254 m2) (4884-2)
• Flues 4,218 sq ft (392 m2) (4884-1)
2,301 sq ft (214 m2) (4884-2)
• Tubes and flues 5,185 sq ft (482 m2) (4884-1)
5,035 sq ft (468 m2) (4884-2)
• Firebox 704 sq ft (65 m2) (4884-1)
720 sq ft (67 m2) (4884-2)
Superheater:
 ​
• Type Type E (4884-1)
Type A (4884-2)
• Heating area 2,466 sq ft (229 m2) (Type E)
2,043 sq ft (190 m2) (Type A)
Cylinders 4
Cylinder size 23.75 in × 32 in
(603 mm × 813 mm)
Valve gear Walschaerts
Valve type Piston
Valve travel 7 in (178 mm)
Valve lap 1 3⁄8 in (35 mm)
Valve lead 1⁄4 in (6 mm)
Train heating Steam heat
Loco brake Pneumatic, Schedule 8-ET
Train brakes Pneumatic
Safety systems Cab signals
hidePerformance figures
Maximum speed 80 mph (130 km/h)
Power output 5,500–6,290 hp (4,100–4,690 kW) @ 41 mph (Drawbar)
Tractive effort 135,375 lbf (602.18 kN)
Factor of adh. 3.99 (4884-1)
4.02 (4884-2)
hideCareer
Operators Union Pacific Railroad
Class 4884-1, 4884-2
Numbers 4000-4019 (-1)
4020-4024 (-2)
Last run June 21, 1959 (revenue service)
Retired 1961-1962
Preserved Eight (Nos. 4004, 4005, 4006, 4012, 4014, 4017, 4018 and 4023) preserved, remainder scrapped
Restored May 2019 (No. 4014)
Disposition Seven on display and one (No. 4014) operational in excursion service
Cost to build US$ 265,000 in 1941, equivalent to $4,606,324 in 2019

UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale Screenshots

UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale
UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale
UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale
UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale
UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale
UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale
UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale
UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale
UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale
UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale
UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale
UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale

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UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale
UP 4884-1 Class (Big Boy) 4-8-8-4 Steam Locomotive 1.5:1 Scale

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