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Lycoming O-435

March 08, 2023

The Lycoming O-435 is an American six-cylinder, horizontally opposed fixed-wing aircraft and helicopter engine made by Lycoming Engines. The engine is a six-cylinder version of the four-cylinder Lycoming O-290.

O-435
Type Piston tank and aircraft engine
National origin United States
Manufacturer Lycoming Engines
First run 1939
Major applications Beechcraft Bonanza
Bell 47
Helio Courier
Hiller OH-23 Raven
M22 Locust
Stinson L-5 Sentinel
Produced 1942–1975 out of production
Developed from Lycoming O-290

Design and development

The powerplant is a horizontally opposed Lycoming six-cylinder design. It is a direct-drive or geared, air-cooled, and normally aspirated engine. The cylinders have steel barrels with aluminum heads, and the valves are operated by hydraulic lifters. The crankshaft is supported in an aluminum-alloy split case by four main bearings and one ball-thrust bearing, and lubricating oil is supplied from a 12 quart wet sump. The camshaft rides in journals that do not employ bearing inserts. The accessory housing supports two magnetos, a starter, a generator, and a dual tach drive. A spare mounting pad is included for a vacuum pump.[1][2][3][4]

Variants

All engines have an additional prefix preceding the 435 to indicate the specific configuration of the engine. There are also numerous engine suffixes, denoting different accessories such as different manufacturers' carburetors, or different magnetos.[1][2]

O-435 models

O-435
Baseline engine model, producing 175 hp (130 kW) at 2300 rpm, with a compression ratio of 6.25:1, a dry weight of 347 lb (157 kg) and fitted with a Marvel MA-4 carburetor. Type certified on February 11, 1942.[1]
O-435-A
Engine model with provisions for automotive type accessories, producing 190 hp (142 kW) at 2550 rpm, with a compression ratio of 6.5:1, a dry weight of 348 lb (158 kg) with a -8 magneto and 342 lb (155 kg) with a -20 magneto and fitted with a Marvel MA-4-5 or PS-5C carburetor. Type certified on February 11, 1942.[1]
O-435-A2
Engine model with a redesigned improved crankcase, cylinders, valves and valve seats, exhaust valve guides and rocker shaft bushing. It also has provisions for automotive-type accessories. It produced 225 hp (168 kW) at 3000 rpm, with a compression ratio of 7.5:1, a dry weight of 365 lb (166 kg) and fitted with a Marvel MA-4-5 carburetor. Type certified on October 19, 1949 and cancelled on February 25, 1944.[1]
O-435-A3
Type certified on January 5, 1951 and cancelled on February 8, 1955.[1]
O-435-B (military designation O-435-5)
Engine model with provisions for AN type accessories, producing 235 hp (175 kW) at 3000 rpm, with a compression ratio of 7.5:1, a dry weight of 362 lb (164 kg) and fitted with a Marvel MA-4-5 carburetor. Type certified on October 7, 1943 and cancelled on November 2, 1950.[1]
O-435-C (military designation O-435-1)
Engine model with provisions for AN type accessories, producing 175 hp (130 kW) at 2300 rpm, with a compression ratio of 6.25:1, a dry weight of 356 lb (161 kg) and fitted with a Marvel MA-4SPA carburetor. Type certified on January 11, 1943.[1]
O-435-C1 (military designation O-435-11)
Engine model, with revised type valves, valve guides, an accessory case with generator and starter drive, producing 175 hp (130 kW) at 2300 rpm, with a compression ratio of 6.25:1, a dry weight of 366 lb (166 kg) and fitted with a Marvel MA-4 carburetor. Type certified on January 2, 1948.[1]
O-435-C2 (military designation O-435-13)
Engine model, with provisions for O-435-C accessories carburetor, producing 175 hp (130 kW) at 2300 rpm, with a compression ratio of 6.25:1, a dry weight of 368 lb (167 kg) and fitted with a Marvel MA-4SPA carburetor. Type certified on January 2, 1948.[1]
O-435-K
Engine model that incorporates a GO-435-C2 accessory case and crankcase. It produces 240 hp (179 kW) at 3000 rpm, with a compression ratio of 7.3:1, a dry weight of 405 lb (184 kg) and fitted with a Marvel MA-4-5 carburetor. Type certified on January 24, 1951.[1]
O-435-K1 (military designation O-435-4)
Engine model with increased maximum continuous rating and the generator pad omitted, approved for helicopter installations. It produces 250 hp (186 kW) at 3000 rpm, with a compression ratio of 7.3:1, a dry weight of 405 lb (184 kg) and fitted with a Marvel MA-4-5 carburetor. Type certified on March 30, 1951.[1]
O-435-2
Military engine model.[4]
O-435-2-M1
Civil modified military engine model, by the Associated Aircraft Modification Company, with Bendix PS-5C carburetor with 380123-1 setting. It produces 235 hp (175 kW) at 3200 rpm, with a compression ratio of 7.5:1, a dry weight of 405 lb (184 kg). Only military O-435-2 engines with serial numbers L00849-11 through L-1117-11 are eligible for this modification.[4]

GO-435 models

GO-435
Baseline geared engine model. It incorporates six 3rd-order crankshaft torsional vibration dampers and reduction gearing. It produced 210 hp (157 kW) at 3000 rpm, with a compression ratio of 6.25:1, a dry weight of 407 lb (185 kg) and fitted with a Marvel MA-4-5 carburetor. Type certified on August 30, 1944 and cancelled on November 2, 1950.[1]
GO-435-A2
Type certified on October 19, 1949 and cancelled on February 8, 1955.[1]
GO-435-C2 (military designation O-435-17)
Geared engine model which incorporates an improved crankcase and cylinder assembly. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 422 lb (191 kg) and fitted with a Marvel MA-4-5 or PS-5BD carburetor. Type certified on October 19, 1949.[1]
GO-435-C2A
Geared engine model, incorporates S6LN-20 or -21 magnetos, producing 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 438 lb (199 kg) and fitted with a Marvel MA-4-5 or PS-5BD carburetor. Type certified on January 2, 1951, cancelled on February 8, 1955 and reinstated July 15, 1955.[1]
GO-435-C2A2
Geared engine model, with a dry sump and without provisions for a hydraulic propeller control or governor, producing 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 432 lb (196 kg) and fitted with a Marvel MA-4-5 or PS-5BD carburetor. Type certified on October 24, 1957.[1]
GO-435-C2B
Geared engine model with provisions for a hydraulic propeller and governor. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 430 lb (195 kg) and fitted with a Marvel MA-4-5 or PS-5BD carburetor. Type certified on November 6, 1952.[1]
GO-435-C2B1
Geared engine model which incorporates a dual generator and vacuum pump drive. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 430 lb (195 kg) and fitted with a Marvel MA-4-5 or PS-5BD carburetor. Type certified on February 8, 1955.[1]
GO-435-C2B2
Geared engine model with S6LN-20, or -21 magnetos. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 430 lb (195 kg) and fitted with a Marvel MA-4-5 or PS-5BD carburetor. Type certified on February 28, 1956.[1]
GO-435-C2C
Geared engine model producing 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 422 lb (191 kg) and fitted with a Marvel MA-4-5 or PS-5BD carburetor. Type certified on November 24, 1953 and cancelled on July 5, 1956.[1]
GO-435-C2D
Geared engine model producing 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 420 lb (191 kg) and fitted with a Marvel MA-4-5 or PS-5BD carburetor. Type certified on July 20, 1954 and cancelled on July 5, 1956.[1]
GO-435-C2E
Geared engine model with S6LN-20, or -21 magnetos. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 420 lb (191 kg) and fitted with a Marvel MA-4-5 or PS-5BD carburetor. Type certified on September 27, 1956.[1]
GO-435-D1
Geared engine model with a dry sump oil system and crosswise accessory drives. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1 and fitted with a Marvel MA-4-5 or PS-5BD carburetor. Type certified on September 25, 1953.[1]

VO-435 models

VO-435
Base model, vertically-mounted engine for helicopters, with a dry sump oil system and side-mounted AN type accessory drives. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 396 lb (180 kg) and fitted with a Marvel MA-4-5 or MA-4-5AA carburetor. Type certified on October 11, 1954. Was re-designated as VO-435-A1A.[2]
VO-435-A1A (military designation O-435-21)
Vertically-mounted engine model for helicopters, with a dry sump oil system and side-mounted AN type accessory drives. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 396 lb (180 kg) and fitted with a Marvel MA-4-5 or MA-4-5AA carburetor. Type certified on October 29, 1954. Re-designated from VO-435.[2]
VO-435-A1B (military designation O-435-6)
Vertically-mounted engine model for helicopters, with a dry sump oil system and a modified accessory section. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 391 lb (177 kg) and fitted with a Marvel MA-4-5 or MA-4-5AA carburetor. Type certified on June 10, 1955.[2]
VO-435-A1C (military designations O-435-23, O-435-23A O-435-23B and O-435-23C)
Vertically-mounted engine model for helicopters, with a dry sump oil system, which incorporates a crankcase and oil sump modification giving increased strength and an oil pump housing which is machined for a hydraulic pump drive. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 399 lb (181 kg) and fitted with a Marvel MA-4-5 or MA-4-5AA carburetor. Type certified on July 18, 1954.[2]
VO-435-A1D (military designation O-435-6A)
Vertically-mounted engine model for helicopters, with a dry sump oil system, with crankcase and oil sump modifications for increased strength. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 390 lb (177 kg) and fitted with a Marvel MA-4-5 or MA-4-5AA carburetor. Type certified on September 27, 1956.[2]
VO-435-A1E
Vertically-mounted engine model for helicopters, with a dry sump oil system and 6RN-200 or S6LN-204 magnetos. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 392 lb (178 kg) and fitted with a Marvel MA-4-5AA carburetor. Type certified on October 15, 1959.[2]
VO-435-A1F
Vertically-mounted engine model for helicopters, with a dry sump oil system. It has internal piston cooling oil jets and heavy duty cylinders and may be converted to a model TVO-435-A1A. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 399 lb (181 kg) and fitted with a Marvel MA-4-5AA carburetor. Type certified on March 6, 1961.[2]
VO-435-B1A
Vertically-mounted engine model for helicopters, with a redesigned accessory drive section, a wet oil sump and a higher compression ratio. It produces 265 hp (198 kW) at 3200 rpm for takeoff, with a compression ratio of 8.7:1, a dry weight of 419 lb (190 kg) and fitted with a Marvel MA-4-5AA carburetor. Type certified on December 15, 1965.[2]
TVO-435-A1A
Turbocharged, vertically-mounted engine model for helicopters, with a dry sump oil system. It produces 260 hp (194 kW) at 3200 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 468 lb (212 kg) and fitted with a Marvel-Schebler MA-6AA carburetor. Type certified on May 12, 1961.[3]

TVO-435 models

TVO-435-A1A
Turbocharged, vertically-mounted engine model for helicopters, with a dry sump oil system. It produces 260 hp (194 kW) at 3200 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 468 lb (212 kg) and fitted with a Marvel-Schebler MA-6AA carburetor. Type certified on May 12, 1961.[3]
TVO-435-B1A (military designation O-435-25A)
Turbocharged, vertically-mounted engine model with internal piston cooling oil jets, for helicopters, with a dry sump oil system and cylinder assemblies machined for long-reach spark plugs. It produces 270 hp (201 kW) at 3200 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 478 lb (217 kg) and fitted with a Marvel-Schebler MA-6AA carburetor. Type certified on November 21, 1962.[3]
TVO-435-B1B
Turbocharged, vertically-mounted engine model for helicopters, with a dry sump oil system and TCM (formerly Bendix) S6RN-1208 and S6LN-1209 magnetos. It produces 270 hp (201 kW) at 3200 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 479 lb (217 kg) and fitted with a Marvel-Schebler MA-6AA carburetor. Type certified on June 20, 1966.[3]
TVO-435-C1A
Turbocharged, vertically-mounted engine model for helicopters, with a dry sump oil system and a T-1112 turbosupercharger. It produces 380 hp (283 kW) at 3200 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 478 lb (217 kg) and fitted with a Marvel-Schebler MA-6AA carburetor. Type certified on November 21, 1962.[3]
TVO-435-D1A
Turbocharged, vertically-mounted engine model for helicopters, with a dry sump oil system. It has a TK-0659 turbocharger and TCM (formerly Bendix) S6RN-1208 (retarded breaker) and S6LN-1209 magnetos. It produces 270 hp (201 kW) at 3200 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 465 lb (211 kg) and fitted with a Marvel-Schebler MA-6AA carburetor. Type certified on March 10, 1966.[3]
TVO-435-D1B
Turbocharged, vertically-mounted engine model for helicopters, with a dry sump oil system. It has TCM (formerly Bendix) S-200 series magnetos. It produces 270 hp (201 kW) at 3200 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 464 lb (210 kg) and fitted with a Marvel-Schebler MA-6AA carburetor. Type certified on February 23, 1967.[3]
TVO-435-E1A
Turbocharged, vertically-mounted engine model for helicopters, with a dry sump oil system and a Kelly Aerospace (formerly AiResearch) TK-0659 turbocharger. It produces 260 hp (194 kW) at 3200 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 490 lb (222 kg) and fitted with a Marvel-Schebler MA-6AA carburetor. Type certified on March 7, 1967.[3]
TVO-435-F1A
Turbocharged, vertically-mounted engine model for helicopters, with a wet sump oil system, different accessory section and a higher power rating. It produces 280 hp (209 kW) at 3200 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 490 lb (222 kg) and fitted with a Marvel-Schebler MA-6AA carburetor. Type certified on January 22, 1968.[3]
TVO-435-G1A
Turbocharged, vertically-mounted engine model for helicopters, with a dry sump oil system and a different automatic waste gate control setting for a higher power rating. It produces 280 hp (209 kW) at 3200 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 465 lb (211 kg) and fitted with a Marvel-Schebler MA-6AA carburetor. Type certified on January 11, 1968.[3]
TVO-435-G1B
Turbocharged, vertically-mounted engine model for helicopters, with a dry sump oil system and different magnetos. It produces 280 hp (209 kW) at 3200 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 464 lb (210 kg) and fitted with a Marvel-Schebler MA-6AA carburetor. Type certified on November 25, 1968.[3]
TVO-435-25
Turbocharged, vertically-mounted military engine model for helicopters, with a dry sump oil system. This military model is similar to the -A1A, except it has cylinder assemblies from the -B1A. It produces 260 hp (194 kW) at 3200 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 493 lb (224 kg) and fitted with a Marvel-Schebler MA-6AA carburetor. Type certified on June 10, 1963.[3]

Applications

 
A Lycoming TVO-435 installed in a Bell 47G
Aircraft
Other

Specifications (O-435-D)

Data from Jane's.[6]

General characteristics

  • Type: Six-cylinder horizontally-opposed gasoline piston engine
  • Bore: 4.875 in (123.8 mm)
  • Stroke: 3.875 in (98.4 mm)
  • Displacement: 434 cu in (7.1 L)
  • Width: 33.5 in (851 mm)
  • Height: 43.5 in (1,105 mm)
  • Dry weight: 433 lb (196.6 kg)

Components

  • Valvetrain: Overhead valve (OHV, pushrod actuated), one inlet and one exhaust valve per cylinder
  • Fuel system: Marvel-Schebler carburetor
  • Fuel type: 100 octane gasoline
  • Oil system: Pressure pump type
  • Cooling system: Air-cooled by fan (helicopter installations)
  • Reduction gear: Direct-drive

Performance

See also

Related development

Comparable engines

Related lists

References

Notes

  1. ^ a b c d e f g h i j k l m n o p q r s t u v w x Federal Aviation Administration (June 23, 2010). "Type Certificate Data Sheet No. E-228 Revision 17" (PDF). (PDF) from the original on December 16, 2016. Retrieved September 2, 2022.
  2. ^ a b c d e f g h i j Federal Aviation Administration (November 4, 2010). "Type Certificate Data Sheet No. E-279 Revision 10" (PDF). (PDF) from the original on December 20, 2016. Retrieved September 2, 2022.
  3. ^ a b c d e f g h i j k l m Federal Aviation Administration (November 4, 2010). "Type Certificate Data Sheet No. 1E13 Revision 8" (PDF). (PDF) from the original on April 11, 2021. Retrieved September 2, 2022.
  4. ^ a b c Federal Aviation Administration. "Type Certificate Data Sheet No. 5E-12" (PDF). (PDF) from the original on September 2, 2022. Retrieved September 2, 2022.
  5. ^ a b Federal Aviation Administration (September 26, 1950). "Helicopter Specification No. 1H1" (PDF). faa.gov. (PDF) from the original on April 19, 2021. Retrieved September 2, 2022.
  6. ^ Bridgman 1994, p. 78d.

Bibliography

  • Bridgman, Leonard. Jane's All the World's Aircraft 1945-46. Hammersmith, London: HarperCollinsPublishers (1994 reprint). ISBN 000 470831-8

External links

  •   Media related to Lycoming O-435 at Wikimedia Commons

March 08, 2023
lycoming, american, cylinder, horizontally, opposed, fixed, wing, aircraft, helicopter, engine, made, lycoming, engines, engine, cylinder, version, four, cylinder, lycoming, 435type, piston, tank, aircraft, enginenational, origin, united, statesmanufacturer, l. The Lycoming O 435 is an American six cylinder horizontally opposed fixed wing aircraft and helicopter engine made by Lycoming Engines The engine is a six cylinder version of the four cylinder Lycoming O 290 O 435Type Piston tank and aircraft engineNational origin United StatesManufacturer Lycoming EnginesFirst run 1939Major applications Beechcraft Bonanza Bell 47 Helio Courier Hiller OH 23 Raven M22 Locust Stinson L 5 SentinelProduced 1942 1975 out of productionDeveloped from Lycoming O 290 Contents 1 Design and development 2 Variants 2 1 O 435 models 2 2 GO 435 models 2 3 VO 435 models 2 4 TVO 435 models 3 Applications 4 Specifications O 435 D 4 1 General characteristics 4 2 Components 4 3 Performance 5 See also 6 References 6 1 Notes 6 2 Bibliography 7 External linksDesign and development EditThe powerplant is a horizontally opposed Lycoming six cylinder design It is a direct drive or geared air cooled and normally aspirated engine The cylinders have steel barrels with aluminum heads and the valves are operated by hydraulic lifters The crankshaft is supported in an aluminum alloy split case by four main bearings and one ball thrust bearing and lubricating oil is supplied from a 12 quart wet sump The camshaft rides in journals that do not employ bearing inserts The accessory housing supports two magnetos a starter a generator and a dual tach drive A spare mounting pad is included for a vacuum pump 1 2 3 4 Variants EditAll engines have an additional prefix preceding the 435 to indicate the specific configuration of the engine There are also numerous engine suffixes denoting different accessories such as different manufacturers carburetors or different magnetos 1 2 O 435 models Edit O 435 Baseline engine model producing 175 hp 130 kW at 2300 rpm with a compression ratio of 6 25 1 a dry weight of 347 lb 157 kg and fitted with a Marvel MA 4 carburetor Type certified on February 11 1942 1 O 435 A Engine model with provisions for automotive type accessories producing 190 hp 142 kW at 2550 rpm with a compression ratio of 6 5 1 a dry weight of 348 lb 158 kg with a 8 magneto and 342 lb 155 kg with a 20 magneto and fitted with a Marvel MA 4 5 or PS 5C carburetor Type certified on February 11 1942 1 O 435 A2 Engine model with a redesigned improved crankcase cylinders valves and valve seats exhaust valve guides and rocker shaft bushing It also has provisions for automotive type accessories It produced 225 hp 168 kW at 3000 rpm with a compression ratio of 7 5 1 a dry weight of 365 lb 166 kg and fitted with a Marvel MA 4 5 carburetor Type certified on October 19 1949 and cancelled on February 25 1944 1 O 435 A3 Type certified on January 5 1951 and cancelled on February 8 1955 1 O 435 B military designation O 435 5 Engine model with provisions for AN type accessories producing 235 hp 175 kW at 3000 rpm with a compression ratio of 7 5 1 a dry weight of 362 lb 164 kg and fitted with a Marvel MA 4 5 carburetor Type certified on October 7 1943 and cancelled on November 2 1950 1 O 435 C military designation O 435 1 Engine model with provisions for AN type accessories producing 175 hp 130 kW at 2300 rpm with a compression ratio of 6 25 1 a dry weight of 356 lb 161 kg and fitted with a Marvel MA 4SPA carburetor Type certified on January 11 1943 1 O 435 C1 military designation O 435 11 Engine model with revised type valves valve guides an accessory case with generator and starter drive producing 175 hp 130 kW at 2300 rpm with a compression ratio of 6 25 1 a dry weight of 366 lb 166 kg and fitted with a Marvel MA 4 carburetor Type certified on January 2 1948 1 O 435 C2 military designation O 435 13 Engine model with provisions for O 435 C accessories carburetor producing 175 hp 130 kW at 2300 rpm with a compression ratio of 6 25 1 a dry weight of 368 lb 167 kg and fitted with a Marvel MA 4SPA carburetor Type certified on January 2 1948 1 O 435 K Engine model that incorporates a GO 435 C2 accessory case and crankcase It produces 240 hp 179 kW at 3000 rpm with a compression ratio of 7 3 1 a dry weight of 405 lb 184 kg and fitted with a Marvel MA 4 5 carburetor Type certified on January 24 1951 1 O 435 K1 military designation O 435 4 Engine model with increased maximum continuous rating and the generator pad omitted approved for helicopter installations It produces 250 hp 186 kW at 3000 rpm with a compression ratio of 7 3 1 a dry weight of 405 lb 184 kg and fitted with a Marvel MA 4 5 carburetor Type certified on March 30 1951 1 O 435 2 Military engine model 4 O 435 2 M1 Civil modified military engine model by the Associated Aircraft Modification Company with Bendix PS 5C carburetor with 380123 1 setting It produces 235 hp 175 kW at 3200 rpm with a compression ratio of 7 5 1 a dry weight of 405 lb 184 kg Only military O 435 2 engines with serial numbers L00849 11 through L 1117 11 are eligible for this modification 4 GO 435 models Edit GO 435 Baseline geared engine model It incorporates six 3rd order crankshaft torsional vibration dampers and reduction gearing It produced 210 hp 157 kW at 3000 rpm with a compression ratio of 6 25 1 a dry weight of 407 lb 185 kg and fitted with a Marvel MA 4 5 carburetor Type certified on August 30 1944 and cancelled on November 2 1950 1 GO 435 A2 Type certified on October 19 1949 and cancelled on February 8 1955 1 GO 435 C2 military designation O 435 17 Geared engine model which incorporates an improved crankcase and cylinder assembly It produces 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 422 lb 191 kg and fitted with a Marvel MA 4 5 or PS 5BD carburetor Type certified on October 19 1949 1 GO 435 C2A Geared engine model incorporates S6LN 20 or 21 magnetos producing 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 438 lb 199 kg and fitted with a Marvel MA 4 5 or PS 5BD carburetor Type certified on January 2 1951 cancelled on February 8 1955 and reinstated July 15 1955 1 GO 435 C2A2 Geared engine model with a dry sump and without provisions for a hydraulic propeller control or governor producing 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 432 lb 196 kg and fitted with a Marvel MA 4 5 or PS 5BD carburetor Type certified on October 24 1957 1 GO 435 C2B Geared engine model with provisions for a hydraulic propeller and governor It produces 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 430 lb 195 kg and fitted with a Marvel MA 4 5 or PS 5BD carburetor Type certified on November 6 1952 1 GO 435 C2B1 Geared engine model which incorporates a dual generator and vacuum pump drive It produces 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 430 lb 195 kg and fitted with a Marvel MA 4 5 or PS 5BD carburetor Type certified on February 8 1955 1 GO 435 C2B2 Geared engine model with S6LN 20 or 21 magnetos It produces 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 430 lb 195 kg and fitted with a Marvel MA 4 5 or PS 5BD carburetor Type certified on February 28 1956 1 GO 435 C2C Geared engine model producing 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 422 lb 191 kg and fitted with a Marvel MA 4 5 or PS 5BD carburetor Type certified on November 24 1953 and cancelled on July 5 1956 1 GO 435 C2D Geared engine model producing 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 420 lb 191 kg and fitted with a Marvel MA 4 5 or PS 5BD carburetor Type certified on July 20 1954 and cancelled on July 5 1956 1 GO 435 C2E Geared engine model with S6LN 20 or 21 magnetos It produces 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 420 lb 191 kg and fitted with a Marvel MA 4 5 or PS 5BD carburetor Type certified on September 27 1956 1 GO 435 D1 Geared engine model with a dry sump oil system and crosswise accessory drives It produces 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 and fitted with a Marvel MA 4 5 or PS 5BD carburetor Type certified on September 25 1953 1 VO 435 models Edit VO 435 Base model vertically mounted engine for helicopters with a dry sump oil system and side mounted AN type accessory drives It produces 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 396 lb 180 kg and fitted with a Marvel MA 4 5 or MA 4 5AA carburetor Type certified on October 11 1954 Was re designated as VO 435 A1A 2 VO 435 A1A military designation O 435 21 Vertically mounted engine model for helicopters with a dry sump oil system and side mounted AN type accessory drives It produces 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 396 lb 180 kg and fitted with a Marvel MA 4 5 or MA 4 5AA carburetor Type certified on October 29 1954 Re designated from VO 435 2 VO 435 A1B military designation O 435 6 Vertically mounted engine model for helicopters with a dry sump oil system and a modified accessory section It produces 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 391 lb 177 kg and fitted with a Marvel MA 4 5 or MA 4 5AA carburetor Type certified on June 10 1955 2 VO 435 A1C military designations O 435 23 O 435 23A O 435 23B and O 435 23C Vertically mounted engine model for helicopters with a dry sump oil system which incorporates a crankcase and oil sump modification giving increased strength and an oil pump housing which is machined for a hydraulic pump drive It produces 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 399 lb 181 kg and fitted with a Marvel MA 4 5 or MA 4 5AA carburetor Type certified on July 18 1954 2 VO 435 A1D military designation O 435 6A Vertically mounted engine model for helicopters with a dry sump oil system with crankcase and oil sump modifications for increased strength It produces 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 390 lb 177 kg and fitted with a Marvel MA 4 5 or MA 4 5AA carburetor Type certified on September 27 1956 2 VO 435 A1E Vertically mounted engine model for helicopters with a dry sump oil system and 6RN 200 or S6LN 204 magnetos It produces 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 392 lb 178 kg and fitted with a Marvel MA 4 5AA carburetor Type certified on October 15 1959 2 VO 435 A1F Vertically mounted engine model for helicopters with a dry sump oil system It has internal piston cooling oil jets and heavy duty cylinders and may be converted to a model TVO 435 A1A It produces 260 hp 194 kW at 3400 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 399 lb 181 kg and fitted with a Marvel MA 4 5AA carburetor Type certified on March 6 1961 2 VO 435 B1A Vertically mounted engine model for helicopters with a redesigned accessory drive section a wet oil sump and a higher compression ratio It produces 265 hp 198 kW at 3200 rpm for takeoff with a compression ratio of 8 7 1 a dry weight of 419 lb 190 kg and fitted with a Marvel MA 4 5AA carburetor Type certified on December 15 1965 2 TVO 435 A1A Turbocharged vertically mounted engine model for helicopters with a dry sump oil system It produces 260 hp 194 kW at 3200 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 468 lb 212 kg and fitted with a Marvel Schebler MA 6AA carburetor Type certified on May 12 1961 3 TVO 435 models Edit TVO 435 A1A Turbocharged vertically mounted engine model for helicopters with a dry sump oil system It produces 260 hp 194 kW at 3200 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 468 lb 212 kg and fitted with a Marvel Schebler MA 6AA carburetor Type certified on May 12 1961 3 TVO 435 B1A military designation O 435 25A Turbocharged vertically mounted engine model with internal piston cooling oil jets for helicopters with a dry sump oil system and cylinder assemblies machined for long reach spark plugs It produces 270 hp 201 kW at 3200 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 478 lb 217 kg and fitted with a Marvel Schebler MA 6AA carburetor Type certified on November 21 1962 3 TVO 435 B1B Turbocharged vertically mounted engine model for helicopters with a dry sump oil system and TCM formerly Bendix S6RN 1208 and S6LN 1209 magnetos It produces 270 hp 201 kW at 3200 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 479 lb 217 kg and fitted with a Marvel Schebler MA 6AA carburetor Type certified on June 20 1966 3 TVO 435 C1A Turbocharged vertically mounted engine model for helicopters with a dry sump oil system and a T 1112 turbosupercharger It produces 380 hp 283 kW at 3200 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 478 lb 217 kg and fitted with a Marvel Schebler MA 6AA carburetor Type certified on November 21 1962 3 TVO 435 D1A Turbocharged vertically mounted engine model for helicopters with a dry sump oil system It has a TK 0659 turbocharger and TCM formerly Bendix S6RN 1208 retarded breaker and S6LN 1209 magnetos It produces 270 hp 201 kW at 3200 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 465 lb 211 kg and fitted with a Marvel Schebler MA 6AA carburetor Type certified on March 10 1966 3 TVO 435 D1B Turbocharged vertically mounted engine model for helicopters with a dry sump oil system It has TCM formerly Bendix S 200 series magnetos It produces 270 hp 201 kW at 3200 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 464 lb 210 kg and fitted with a Marvel Schebler MA 6AA carburetor Type certified on February 23 1967 3 TVO 435 E1A Turbocharged vertically mounted engine model for helicopters with a dry sump oil system and a Kelly Aerospace formerly AiResearch TK 0659 turbocharger It produces 260 hp 194 kW at 3200 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 490 lb 222 kg and fitted with a Marvel Schebler MA 6AA carburetor Type certified on March 7 1967 3 TVO 435 F1A Turbocharged vertically mounted engine model for helicopters with a wet sump oil system different accessory section and a higher power rating It produces 280 hp 209 kW at 3200 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 490 lb 222 kg and fitted with a Marvel Schebler MA 6AA carburetor Type certified on January 22 1968 3 TVO 435 G1A Turbocharged vertically mounted engine model for helicopters with a dry sump oil system and a different automatic waste gate control setting for a higher power rating It produces 280 hp 209 kW at 3200 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 465 lb 211 kg and fitted with a Marvel Schebler MA 6AA carburetor Type certified on January 11 1968 3 TVO 435 G1B Turbocharged vertically mounted engine model for helicopters with a dry sump oil system and different magnetos It produces 280 hp 209 kW at 3200 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 464 lb 210 kg and fitted with a Marvel Schebler MA 6AA carburetor Type certified on November 25 1968 3 TVO 435 25 Turbocharged vertically mounted military engine model for helicopters with a dry sump oil system This military model is similar to the A1A except it has cylinder assemblies from the B1A It produces 260 hp 194 kW at 3200 rpm for takeoff with a compression ratio of 7 3 1 a dry weight of 493 lb 224 kg and fitted with a Marvel Schebler MA 6AA carburetor Type certified on June 10 1963 3 Applications Edit A Lycoming TVO 435 installed in a Bell 47G AircraftAero Commander 500 AISA I 115 Beechcraft Bonanza Bell 47 Bell H 13 Sioux Bellanca Cruisemaster Boisavia Mercurey D Apuzzo Senior Aero Sport de Havilland Canada Super Chipmunk Fleetwings BQ 2 Fleetwings PQ 12 Fokker F 25 Fokker S 11 Helio Courier Hiller OH 23 Raven Interstate TDR Jeffair Barracuda Kaman K 190A 5 Kaman K 225 5 Karhumaki Karhu Kawasaki KH 4 LIBIS KB 11 Miles Aerovan Piaggio P 148 Piaggio P 149 Pilatus P 4 Ra Son Warrior Ryan Navion Saab 91 Safir Stinson 108 Stinson L 5 Sentinel St Croix Sopwith Triplane UTVA Aero 3 UTVA 56 Vertical Hummingbird OtherM22 Locust tankSpecifications O 435 D EditData from Jane s 6 General characteristics Type Six cylinder horizontally opposed gasoline piston engine Bore 4 875 in 123 8 mm Stroke 3 875 in 98 4 mm Displacement 434 cu in 7 1 L Width 33 5 in 851 mm Height 43 5 in 1 105 mm Dry weight 433 lb 196 6 kg Components Valvetrain Overhead valve OHV pushrod actuated one inlet and one exhaust valve per cylinder Fuel system Marvel Schebler carburetor Fuel type 100 octane gasoline Oil system Pressure pump type Cooling system Air cooled by fan helicopter installations Reduction gear Direct drivePerformance Power output 212 hp 158 kW at 3 000 rpm at sea level Compression ratio 7 5 1See also EditRelated development Lycoming O 290Comparable engines Franklin O 335Related lists List of aircraft enginesReferences EditNotes Edit a b c d e f g h i j k l m n o p q r s t u v w x Federal Aviation Administration June 23 2010 Type Certificate Data Sheet No E 228 Revision 17 PDF Archived PDF from the original on December 16 2016 Retrieved September 2 2022 a b c d e f g h i j Federal Aviation Administration November 4 2010 Type Certificate Data Sheet No E 279 Revision 10 PDF Archived PDF from the original on December 20 2016 Retrieved September 2 2022 a b c d e f g h i j k l m Federal Aviation Administration November 4 2010 Type Certificate Data Sheet No 1E13 Revision 8 PDF Archived PDF from the original on April 11 2021 Retrieved September 2 2022 a b c Federal Aviation Administration Type Certificate Data Sheet No 5E 12 PDF Archived PDF from the original on September 2 2022 Retrieved September 2 2022 a b Federal Aviation Administration September 26 1950 Helicopter Specification No 1H1 PDF faa gov Archived PDF from the original on April 19 2021 Retrieved September 2 2022 Bridgman 1994 p 78d Bibliography Edit Bridgman Leonard Jane s All the World s Aircraft 1945 46 Hammersmith London HarperCollinsPublishers 1994 reprint ISBN 000 470831 8External links Edit Media related to Lycoming O 435 at Wikimedia Commons Retrieved from https en wikipedia org w index php title Lycoming O 435 amp oldid 1108158334, wikipedia, wiki, book, books, library,

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