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knowledge coz u know knowledge is power Pratt and Whitney R 1830 Twin Wasp
Updated on Apr 25, 2018
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Covid-19 The Pratt & Whitney R-1830 Twin Wasp was an American aircraft engine widely used in the 1930s and 1940s. Produced by Pratt & Whitney, it was a two-row, 14-cylinder, air-cooled radial design. It displaced 1,830 cu in (30.0 L) and its bore and stroke were both 5.5 in (140 mm). A total of 173,618 R-1830 engines was built, and from their use in two of the most-produced aircraft ever built, the four-engined B-24 heavy bomber and twin-engined DC-3 transport, more Twin Wasps may have been built than any other aviation piston engine in history. A "bored-out" version (to a 5.75 inch/146 mm cylinder bore) with a slightly higher power rating and other slight changes in detail design was produced as the R-2000.
R-1830-1 : 800 hp (597 kW)R-1830-9 : 850 hp (634 kW), 950 hp (708 kW)R-1830-11 : 800 hp (597 kW)R-1830-13 : 900 hp (671 kW), 950 hp (708 kW), 1,050 hp (783 kW)R-1830-17 : 1,200 hp (895 kW)R-1830-21 : 1,200 hp (895 kW)R-1830-25 : 1,100 hp (820 kW)R-1830-33 : 1,200 hp (895 kW)R-1830-35 : 1,200 hp (895 kW) Fitted with GE B-2 turbosuperchargerR-1830-41 : 1,200 hp (895 kW) Fitted with GE B-2 turbosuperchargerR-1830-43 : 1,200 hp (895 kW)R-1830-45 : 1,050 hp (783 kW)R-1830-49 : 1,200 hp (895 kW)R-1830-64 : 850 hp (634 kW), 900 hp (671 kW)R-1830-65 : 1,200 hp (895 kW)R-1830-66 : 1,000 hp (746 kW), 1,050 hp (783 kW), 1,200 hp (895 kW)R-1830-72 : 1,050 hp (783 kW)R-1830-75 : 1,350 hp (1,007 kW)R-1830-76 : 1,200 hp (895 kW)R-1830-82 : 1,200 hp (895 kW)R-1830-86 : 1,200 hp (895 kW)R-1830-88 : 1,200 hp (895 kW)R-1830-90 : 1,200 hp (895 kW)R-1830-90-B : 1,200 hp (895 kW)R-1830-92 : 1,200 hp (895 kW)R-1830-94 : 1,350 hp (1,007 kW)R-1830-S1C3-G : 1,050 hp (783 kW), 1,200 hp (895 kW)R-1830-S3C4 : 1,200 hp (895 kW)R-1830-S3C4-G : 1,200 hp (895 kW)R-1830-S6C3-G : 1,100 hp (820 kW)R-1830-SC-G : 900 hp (671 kW)R-1830-SC2-G : 900 hp (671 kW), 1,050 hp (783 kW)R-1830-SC3-G : 1,065 hp (749 kW) same engine built in Sweden as STWC-3G by SFA company for Swedish J 22, B 17 and B 18.Bristol Beaufort (Australian-built production)
Bloch MB.176
Budd RB Conestoga
Burnelli CBY-3
CAC Boomerang
CAC Woomera
Consolidated B-24 Liberator
Consolidated PBY Catalina
Consolidated PB2Y Coronado
Consolidated PB4Y Privateer
Curtiss P-36 Hawk
Douglas C-47 Skytrain
Douglas DC-3
Douglas DB-7 (early variants only)
Douglas TBD Devastator
FFVS J 22
Grumman F4F Wildcat
Laird-Turner Meteor LTR-14
Lioré et Olivier LeO 453
Lisunov Li-3 - A Yugoslav version of the Soviet Lisunov Li-2
Martin Maryland
Restored Mitsubishi A6M Zero warbird aircraft
Republic P-43 Lancer
Saab 17
Saab 18
Short Sunderland V
Seversky P-35
Vickers Wellington IV
VL Myrsky
Vultee P-66 Vanguard
Model R-1830-92 displayed at the Smithsonian Institution's National Air and Space Museum in Washington, DC
Model R-1830-86 on display at the New England Air Museum, Bradley International Airport, Windsor Locks, CT.
Model R-1830 on display at the Northeast Classic Car Museum in Norwich, NY
Model R-1830 on display at the Dutch aviation museum Aviodrome
Model R-1830/65 on display at the Museo Nacional de Aeronautica- Buenos Aires - Argentina
Data from
Type: Fourteen-cylinder two-row supercharged air-cooled radial engineBore: 5.5 in (139.7 mm)Stroke: 5.5 in (139.7 mm)Displacement: 1,829.4 in³ (29.978 l)Length: 59.06 in (1,500 mm)Diameter: 48.03 in (1,220 mm)Dry weight: 1,250 lb (567 kg)Valvetrain: Two overhead valves per cylinderSupercharger: Single-speed General Electric centrifugal type supercharger, 1:7.15 speed increaseFuel system: Two-barrel Stromberg carburetorFuel type: 95-100 octane rating gasolineCooling system: Air-cooledReduction gear: Epicyclic gearing, 2:3Power output: 1,200 hp (895 kW) at 2,700 rpm for takeoff
700 hp (522 kW) at 2,325 rpm cruise power at 13,120 ft (4,000 m)
Specific power: 0.66 hp/in³ (29.83 kW/l)Compression ratio: 6.7:1Specific fuel consumption: 0.49 lb/(hp•h) (295 g/(kW•h))Power-to-weight ratio: 0.96 hp/lb (1.58 kW/kg)Pratt & Whitney R-1830 Twin Wasp Wikipedia
