Sikorsky S-58
Technical Specifications

First Flight: N/A
Number Built: N/A
Length: 46 feet  9 inches
Main Rotor Diameter: 56 feet 
Tail Rotor Diameter: N/A
Height: 15 feet 10 inches
Max Take-Off Wt.: 12,700 lbs.
Empty Wt.:   7,560 lbs.
Max Cruising Speed: 130 mph  113 kts
Normal Cruising Speed:   88 mph    77 kts
Service Ceiling: N/A
Fuel Capacity: 290 US gallons
Range: N/A
Fuel Type: 115/145 octane
Fuel Consumption: N/A
Engine: 1 Wright Cyclone R-1820-84 rated @ 1275 HP 
Seating: N/A
Crew: 2 Pilots 

Engine Specifications
Wright Cyclone R-1820-84

Type: 9 cylinder air cooled radial
Length: 50.07 inches
Diameter: 55.74 inches
Bore: 6.125 inches
Stroke: 6.875 inches
Displacement: 1820 cubic inches
Compression Ratio: 6.80 to 1
Dry Weight: 1405 lbs.
Ignition: Magnetos; Bendix Scintilla D9LN-2
Fuel Grade: 115/145 octane
Carburation: Bendix PD-12R1
Performance: Take-Off: 1525 HP @ 2800 RPM
Normal Rating: 1275 HP @ 2500 RPM