Curtiss V-1570 Conqueror
1926 V12 engine family by Curtiss
The Curtiss V-1570 Conqueror was a V12 liquid-cooled aircraft engine. Representing a more powerful version of the Curtiss D-12, the engine entered production in 1926 and flew in numerous aircraft.
Design and development
Designed in 1924 as a military successor to the Curtiss D-12, initially named the Conqueror, it was later given the military designation of V-1570 based on its displacement of 1,570 cubic inches (26 L). The engine featured open-ended cylinder liners (advanced technology for the period) and pressurized liquid cooling. Developments including the use of a supercharger gradually increased power output until reliability problems due to overheating and coolant leaks became apparent. Military funding for further development of the Conqueror was cut in 1932, efforts by Curtiss to market the engine for civil airliners failed and the line was dropped from production.
Variants
Applications
Other applications
Mormon Meteor III (custom Bonneville salt flat race car)
Specifications (V-1570 direct drive)
Data from Grey and Gunston.
General characteristics
Type: V-12 liquid-cooled aircraft piston engine
Bore: 5+1⁄8 in (130 mm)
Stroke: 6+11⁄32 in (161 mm)
Displacement: 1,570.4 cu in (25.7 L)
Length: 64 in (1,600 mm)
Width: 26+5⁄16 in (668 mm)
Height: 39+1⁄16 in (992 mm)
Dry weight: 835 lb (379 kg)
Components
Valvetrain: Inlet and exhaust overhead camshafts operating two exhaust and two inlet valves per cylinder, via 'T' head cam followers.
Fuel system: Two Stromberg NA-Y6-O carburetors
Oil system: Dry sump, pressure feed and spray with scavenge.
The public source identifies “Curtiss V-1570 Conqueror” as 1926 V12 engine family by Curtiss. This brief keeps that definition visible, then builds a research path around Curtiss, V-1570 and Conqueror.
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This entry incorporates text from “Curtiss V-1570 Conqueror” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.