# Ranger L-440 > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Ranger_L-440 > Markdown URL: https://mediated.wiki/source/Ranger_L-440.md > Source: https://en.wikipedia.org/wiki/Ranger_L-440 > Source revision: 1340036706 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) Type of aircraft engine L-440 A Ranger 6-440C-5 on display at the Museu do Ar, Portugal Type Piston aero-engine Manufacturer Ranger Aircraft Engine Division Major applications Fairchild PT-19/PT-26 Grumman Widgeon The **Ranger L-440** (company designation **6-440C**) are six-cylinder inline inverted air-cooled aero-engines produced by the [Ranger Aircraft Engine Division](/source/Ranger%2FFairchild_Engines) of the [Fairchild Engine and Airplane Corporation](/source/Fairchild_Aircraft) of [Farmingdale, New York](/source/Farmingdale%2C_New_York), United States. The engine was mainly produced for Fairchild's family of training aircraft in the mid-1930s. ## Design According to H. L. Puckett, “Ranger developed a system of air-cooling that kept all cylinders at a high degree of uniformity. The system used pressurized air admitted through an opening in the front of the engine cowling, which then traveled through a tunnel connected to the air scoop.” The tunnel, with one side fitted with corrugations, directed the air against the cylinders at relatively equal pressure and volume. Baffles between the cylinders directed the air past machined cooling fins around the cylinder barrels and heads. This gave remarkably balanced temperature range in level flight..."[1] The [Chromoly](/source/Chromoly) crankshaft with moveable counterweights on the rear to control torsional vibration. According to Puckett, "All main journals and [crankpins](/source/Crankpin) are hollow for lightness and so that they may serve as oil reservoirs. Oil passages from the main bearings to the connecting rod bearings are drilled in each crankcheck so that each rod bearing is fed by two oil passages. The crankshaft is drilled so that excess oil from the main bearings is forced into the hollow journal and thence through tubes in the crankchecks to hollow crank pins." The [crankcase](/source/Crankcase) is made of aluminum alloy.[1] Ranger manufactured the [cylinder barrels](/source/Cylinder_(engine)) from rough alloy steel forgings, while the pistons were machined from aluminum alloy castings, and the connecting rods were machined from chromoly steel forgings. The alloy steel forging [camshaft](/source/Camshaft) was bolted to the cylinder heads, and driven by a vertical drive shaft.[1] Oil pumps, scavenge and pressure, were provided for engine oil distribution and return, as well as an oil cooler. Two [Bendix](/source/Bendix_Corporation)-[Scintilla](/source/Scintilla_Magneto_Company) magnetos were standard, with the left one incorporating [impulse coupling](/source/Impulse_coupling). Also standard was a Stromberg carburetor, and either an electric or manual starter. Generators were either made by Ranger or Bendix, though the PT-26 used a wind driven generator.[1] ## Variants Ranger L-440-1 Model 6.444C-2 engine plate ### Company **6-440C-2** - 175 hp (130 kW) variant with a 6:1 [compression ratio](/source/Compression_ratio).[2] **6-440C-3** - 180 hp (130 kW) variant with a 6.2:1 compression ratio.[2] **6-440C-4** - 190 hp (140 kW) variant with a 6.8:1 compression ratio.[2] **6-440C-5** - 200 hp (150 kW) variant with a 7.5:1 compression ratio.[2] ### Military **L-440-1** - Military designation of the 6-440C-2[3] **L-440-2** - Military designation of the 6-440C-5[3] **L-440-3** - Military designation of the 6-440C-5[3] **L-440-5** - Military designation of the 6-440C-5[3] **L-440-7** - Military designation of the 6-440C-5[3] **L-440-9** - Military designation of the 6-440C-2[3] **L-440-11** - Military designation of the 6-440C-5[3] ## Applications - [Fairchild 24](/source/Fairchild_24) - [Fairchild PT-19/26](/source/Fairchild_PT-19) - [Falconar SAL Mustang](/source/Falconar_SAL_Mustang) - [Grumman Widgeon](/source/Grumman_Widgeon) - [Maestranza Central de Aviación HF XX-02](/source/Maestranza_Central_de_Aviaci%C3%B3n_HF_XX-02) - [St. Louis PT-LM-4](/source/St._Louis_PT-LM-4) ## Specifications (6-440C-2) A 6-440C cutaway L-440 on display at [Museum of Aviation](/source/Museum_of_Aviation_(Warner_Robins)), [Robins AFB](/source/Robins_AFB) *Data from* [2] ### General characteristics - **Type:** Six-cylinder inline inverted air-cooled - **[Bore](/source/Bore_(engine)):** 4 1⁄8 in (104.8 mm) - **[Stroke](/source/Stroke_(engine)):** 5 1⁄2 in (139.7 mm) - **[Displacement](/source/Engine_displacement):** 441 in3 (7.2 litres) - **Length:** 53.156 in (1.351 m) - **Width:** 21.954 in (0.549 m) - **Height:** 33.50 in (0.854 m) - **[Dry weight](/source/Dry_weight):** 376 lb (171 kg) ### Components - **[Valvetrain](/source/Valvetrain):** [Overhead camshaft](/source/Overhead_camshaft) - **Fuel system:** [Updraft carburetor](/source/Updraft_carburetor) - **Fuel type:** 65 [octane rating](/source/Octane_rating) [gasoline](/source/Gasoline) - **Oil system:** Full pressure type - **Cooling system:** air-cooled (pressure type cylinder baffles) ### Performance - **Power output:** 175 hp (130 kW) at 2,450 rpm - **[Compression ratio](/source/Compression_ratio):** 6:1 ## See also **Comparable engines** - [de Havilland Gipsy Six](/source/De_Havilland_Gipsy_Six) - [Menasco B6](/source/Menasco_B6) - [Napier Javelin](/source/Napier_Javelin) **Related lists** - [List of aircraft engines](/source/List_of_aircraft_engines) ## References Wikimedia Commons has media related to [Ranger L-440](https://commons.wikimedia.org/wiki/Category:Ranger_L-440). ### Notes 1. ^ [***a***](#cite_ref-hlp_1-0) [***b***](#cite_ref-hlp_1-1) [***c***](#cite_ref-hlp_1-2) [***d***](#cite_ref-hlp_1-3) Puckett, H.L. (1980). *Sherman Fairchild's PT-19: Cradle of Heroes*. Flambeau Lith Corporation. p. 57-70,83. 1. ^ [***a***](#cite_ref-janes_2-0) [***b***](#cite_ref-janes_2-1) [***c***](#cite_ref-janes_2-2) [***d***](#cite_ref-janes_2-3) [***e***](#cite_ref-janes_2-4) Bridgman 1988 1. ^ [***a***](#cite_ref-may4ranggapp3a_3-0) [***b***](#cite_ref-may4ranggapp3a_3-1) [***c***](#cite_ref-may4ranggapp3a_3-2) [***d***](#cite_ref-may4ranggapp3a_3-3) [***e***](#cite_ref-may4ranggapp3a_3-4) [***f***](#cite_ref-may4ranggapp3a_3-5) [***g***](#cite_ref-may4ranggapp3a_3-6) [*Ranger Overhaul Manual*](http://app.aircorpslibrary.com/document/viewer/may4ranggapp3a). Farmingdale, New York: Ranger Aircraft Engines, Fairchild Engine and Airplane Corporation. August 1944. pp. 6–7. Retrieved 23 October 2025. ### Bibliography - Bridgman, Leonard (1988). *Jane's Fighting Aircraft of World War II*. New York: Crescent Books. [ISBN](/source/ISBN_(identifier)) [0-517-67964-7](https://en.wikipedia.org/wiki/Special:BookSources/0-517-67964-7). v t e Ranger/Fairchild aircraft engines Ranger military designations L-390 L-410 L-440 V-770 Ranger civil designations 6-390B 6-410B 6-440C SGV770B Fairchild turbojets J44 J83 American Helicopter XPJ49 See also: Fairchild aircraft v t e United States military piston aircraft engine designation system H (four-bank H-configuration inline) H-1640 XH-2240 XH-2470 XH-2600 XH-3130 XH-3730 H-4070 IV (inverted-V inline) IV-1430 IV-2040 IV-2220 L (single-bank inline) L-330 L-365 L-375 L-390 L-410 L-440 L-510 L-825 O (opposed) O-15 O-40 O-45 O-90 O-100 O-145 O-150 O-170 O-175 O-180 O-190 O-200 (C) O-200 (F) O-205 O-235 O-290 O-300 O-335 O-360 (C) O-360 (L) O-405 O-425 O-435 O-470 O-480 O-520 O-540 (F) O-540 (L) O-550 O-580 O-805 O-1230 R (radial) R-250 R-265 R-270 R-370 (LB) R-370 (K) R-420 R-440 R-500 R-540 (W) R-540 (K) R-545 R-550 R-600 R-670 R-680 R-720 R-755 R-760 R-790 R-830 R-915 R-975 DR-980 R-985 R-1044 R-1300 R-1340 R-1454 R-1510 R-1535 R-1640 R-1670 R-1690 R-1740 R-1750 R-1820 R-1830 R-1860 R-2000 R-2060 R-2160 R-2180 R-2600 R-2800 R-3350 R-4090 R-4360 R-7755 V (upright-V inline) V-720 V-1150 V-1237 V-1400 V-1440 V-1460 V-1510 V-1560 V-1570 V-1650 (P) V-1710 V-1950 V-3420 V (inverted-V inline) V-770 V-1650 (L) VG (inverted-V inline) VG-1410 W (three-bank W-configuration inline) W-2779 See also: X-1800 US military gas turbine aeroengines Piston engine configurations --- Adapted from the Wikipedia article [Ranger L-440](https://en.wikipedia.org/wiki/Ranger_L-440) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Ranger_L-440?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.