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HKS 700E

April 25, 2024

The HKS 700E is a twin-cylinder, horizontally opposed, four stroke, carburetted aircraft engine, designed for use on ultralight aircraft, powered parachutes and ultralight trikes. The engine is manufactured by HKS, a Japanese company noted for its automotive racing engines.[1][2][3]

HKS 700E
HKS 700E mounted on a Flightstar II
Type Twin cylinder four-stroke aircraft engine
National origin Japan
Manufacturer HKS

Development edit

The HKS 700E has dual capacitor discharge ignition, dual carburetors and electric start. The engine is mainly air-cooled, but with oil-cooled cylinder heads. The OHV pushrod engine has four valves per cylinder, and nickel-ceramic coated cylinder bores. Lubrication is dry sump, with a trochoid pump.[1][3]

The reduction drive is a choice of two integral gearboxes: the A-type gearbox has a 2.58:1 ratio and can accommodate propellers of up to 4,000 kg/cm2 inertial load; the B-type gearbox has a 3.47:1 ratio and can accommodate propellers of up to 6,000 kg/cm2.[1][3]

The 700E burns 9 L (2.4 US gal) per hour in cruise flight at 4,750 rpm. The recommended time between overhauls is 1000 hours, although this is expected to be increased as experience is gained.[3]

 
 
HKS 700E on a Rans S-12 Airaile

Producing 60 hp (45 kW) at 6,200 rpm for three minutes for take-off and 56 hp (42 kW) at 5,800 rpm continuously, the 700E was designed as a fuel efficient four stroke alternative to the high fuel consumption two stroke engines, such as the Rotax 582.[1][3]

Coupe (facelift)HKS 700E engines from serial number 101105 and above meet ASTM standard 2339-05, which governs the design and manufacture of reciprocating engines for light-sport aircraft. Compliance with the ASTM standard means the aircraft is applicable for use on special or experimental light-sport aircraft (S-LSA or E-LSA).[4]

The company's owner's manual disclaimer states:

WARNING! This is a non-certified aircraft engine, the possibility of engine failure exists at all times. Do not operate this engine over densely populated areas. Do not operate this engine over terrain where a safe, power off landing cannot be performed. The operating and maintenance instructions supplied with this engine must be followed at all times. Flying any aircraft involves the risk of injury or death, building and maintaining your own aircraft requires great personal responsibility.[3]

Variants edit

700E
Initial version, normally aspirated and producing 60 hp (45 kW) at 6200 rpm for three minutes for take-off and 56 hp (42 kW) at 5800 rpm continuously.[1][3]
700T
Turbocharged version with a 62.5 mm (2.5 in) stroke and a compression ratio of 8.8:1, that produces 80 hp (60 kW) at 5300 rpm for three minutes for take-off and 77 hp (57 kW) at 4900 rpm continuously. The engine's dry weight is 57.5 kg (127 lb) equipped with electrical system, electric starter, fuel injectors, gearbox, exhaust system and turbocharger. The initial time between overhauls is recommended as 500 hours, but this is expected to rise with operational experience.[5][6]

Applications edit

Specifications (700E) edit

Data from Cliche & HKS[1][3]

General characteristics

  • Type: Two cylinder, four-stroke aircraft engine
  • Bore: 85 mm (3.3 in)
  • Stroke: 60 mm (2.4 in)
  • Displacement: 680 cc (41.49 cu in)
  • Dry weight: 55 kg (121 lb) equipped with electrical system, electric starter, carburetors, gearbox, exhaust system, oil tank and cooler

Components

  • Valvetrain: two intake and two exhaust valves per cylinder
  • Fuel type: unleaded auto fuel
  • Oil system: dry sump with a trochoid pump
  • Cooling system: free air cylinders, with oil-cooled cylinder heads
  • Reduction gear: A-type gearbox with 2.58:1 ratio, limit of 4,000kg/cm2 inertial load. The B-type gearbox with 3.47:1 ratio, limit of 6,000kg/cm2 inertial load

Performance

  • Power output: 60 hp (45 kW) at 6200 rpm for three minutes for take-off and 56 hp (42 kW) at 5800 rpm continuous
  • Compression ratio: 11.3:1

See also edit

References edit

  1. ^ a b c d e f Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, page G-9 Cybair Limited Publishing, 2001. ISBN 0-9680628-1-4
  2. ^ HKS (n.d.). . Archived from the original on 1999-10-13. Retrieved 2009-12-25.
  3. ^ a b c d e f g h HKS (2011). "HKS 700E Specifications". Retrieved 27 February 2014.
  4. ^ HKS Engines Compliance Statement July,2006
  5. ^ HKS Aviation Co. (2011). "HKS 700T four stroke turbo power". Retrieved 3 January 2012.
  6. ^ HKS Aviation Co. (2011). "HKS 700T Specifications". Retrieved 3 January 2012.

External links edit

 
Wikimedia Commons has media related to HKS 700E.
  • Official website
  • Distributor's website

April 25, 2024
700e, twin, cylinder, horizontally, opposed, four, stroke, carburetted, aircraft, engine, designed, ultralight, aircraft, powered, parachutes, ultralight, trikes, engine, manufactured, japanese, company, noted, automotive, racing, engines, mounted, flightstar,. The HKS 700E is a twin cylinder horizontally opposed four stroke carburetted aircraft engine designed for use on ultralight aircraft powered parachutes and ultralight trikes The engine is manufactured by HKS a Japanese company noted for its automotive racing engines 1 2 3 HKS 700E HKS 700E mounted on a Flightstar II Type Twin cylinder four stroke aircraft engine National origin Japan Manufacturer HKS Contents 1 Development 2 Variants 3 Applications 4 Specifications 700E 4 1 General characteristics 4 2 Components 4 3 Performance 5 See also 6 References 7 External linksDevelopment editThe HKS 700E has dual capacitor discharge ignition dual carburetors and electric start The engine is mainly air cooled but with oil cooled cylinder heads The OHV pushrod engine has four valves per cylinder and nickel ceramic coated cylinder bores Lubrication is dry sump with a trochoid pump 1 3 The reduction drive is a choice of two integral gearboxes the A type gearbox has a 2 58 1 ratio and can accommodate propellers of up to 4 000 kg cm2 inertial load the B type gearbox has a 3 47 1 ratio and can accommodate propellers of up to 6 000 kg cm2 1 3 The 700E burns 9 L 2 4 US gal per hour in cruise flight at 4 750 rpm The recommended time between overhauls is 1000 hours although this is expected to be increased as experience is gained 3 nbsp nbsp HKS 700E on a Rans S 12 Airaile Producing 60 hp 45 kW at 6 200 rpm for three minutes for take off and 56 hp 42 kW at 5 800 rpm continuously the 700E was designed as a fuel efficient four stroke alternative to the high fuel consumption two stroke engines such as the Rotax 582 1 3 Coupe facelift HKS 700E engines from serial number 101105 and above meet ASTM standard 2339 05 which governs the design and manufacture of reciprocating engines for light sport aircraft Compliance with the ASTM standard means the aircraft is applicable for use on special or experimental light sport aircraft S LSA or E LSA 4 The company s owner s manual disclaimer states WARNING This is a non certified aircraft engine the possibility of engine failure exists at all times Do not operate this engine over densely populated areas Do not operate this engine over terrain where a safe power off landing cannot be performed The operating and maintenance instructions supplied with this engine must be followed at all times Flying any aircraft involves the risk of injury or death building and maintaining your own aircraft requires great personal responsibility 3 Variants edit700E Initial version normally aspirated and producing 60 hp 45 kW at 6200 rpm for three minutes for take off and 56 hp 42 kW at 5800 rpm continuously 1 3 700T Turbocharged version with a 62 5 mm 2 5 in stroke and a compression ratio of 8 8 1 that produces 80 hp 60 kW at 5300 rpm for three minutes for take off and 77 hp 57 kW at 4900 rpm continuously The engine s dry weight is 57 5 kg 127 lb equipped with electrical system electric starter fuel injectors gearbox exhaust system and turbocharger The initial time between overhauls is recommended as 500 hours but this is expected to rise with operational experience 5 6 Applications editAeroalcool Quasar Aeros del Sur Manta Aero Services Guepard Guepe Air Creation Skypper Air Creation Trek Airsport Sonet Antares MA 33 Aviation Products Star Trike BAaer Guri BB Microlight BB two seater Bede BD 6 Bede BD 17 Nugget ASAP Chinook Plus 2 Capella T Raptor CBB O2 CGS Hawk Club ULM Rotor Ptenets 2 Cyclone AX2000 DTA Combo Earthstar Thunder Gull Excalibur Aircraft Excalibur Fletcher Hercules Flightstar II Flying K Sky Raider Flying Machines FM301 Harmening High Flyer Garland Vampire GA 3 Green Sky Adventures Micro Mong Hy Tek Hurricane Hauler Murphy JDM 8 Murphy Maverick North Wing Sport X2 Phoenix Air Phoenix Quad City Challenger Quicksilver GT400 RagWing RW22 Tiger Moth Rainbow Aerotrike SlipStream Ultra Sport Solo Wings Aquilla Sport Flight Talon Stellar Astra Summit Steel Breeze Sundog Two Seater TechProAviation Merlin 100 Titan TornadoSpecifications 700E editData from Cliche amp HKS 1 3 General characteristics Type Two cylinder four stroke aircraft engine Bore 85 mm 3 3 in Stroke 60 mm 2 4 in Displacement 680 cc 41 49 cu in Dry weight 55 kg 121 lb equipped with electrical system electric starter carburetors gearbox exhaust system oil tank and cooler Components Valvetrain two intake and two exhaust valves per cylinder Fuel type unleaded auto fuel Oil system dry sump with a trochoid pump Cooling system free air cylinders with oil cooled cylinder heads Reduction gear A type gearbox with 2 58 1 ratio limit of 4 000kg cm2 inertial load The B type gearbox with 3 47 1 ratio limit of 6 000kg cm2 inertial load Performance Power output 60 hp 45 kW at 6200 rpm for three minutes for take off and 56 hp 42 kW at 5800 rpm continuous Compression ratio 11 3 1See also editJabiru 2200 KFM 112M Pegasus PAL 95 Rotax 912 ULPower UL260iReferences edit a b c d e f Cliche Andre Ultralight Aircraft Shopper s Guide 8th Edition page G 9 Cybair Limited Publishing 2001 ISBN 0 9680628 1 4 HKS n d HKS Aviation Archived from the original on 1999 10 13 Retrieved 2009 12 25 a b c d e f g h HKS 2011 HKS 700E Specifications Retrieved 27 February 2014 HKS Engines Compliance Statement July 2006 HKS Aviation Co 2011 HKS 700T four stroke turbo power Retrieved 3 January 2012 HKS Aviation Co 2011 HKS 700T Specifications Retrieved 3 January 2012 External links edit nbsp Wikimedia Commons has media related to HKS 700E Official website Distributor s website Retrieved from https en wikipedia org w index php title HKS 700E amp oldid 1188518358, wikipedia, wiki, book, books, library,

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