42 Series

42 Series

42 Series

Product catalog summary
Overview: The 42 Series is a state-of-the-art, air-cooled, two-stroke engine designed for Unmanned Aerial Vehicles (UAVs). It offers optimal performance in extreme conditions, leveraging advanced closed-loop control technology.
Specifications:
  • Weight: 5700g (12.5 lb) with exhaust system, sensors, and wiring harness.
  • Additional Components: 600g (1.33 lb) for ECU, ignition system, and fuel supply; 800g (1.76 lb) for a 1kW generator; 600g (1.33 lb) for a 0.5kW/28V starter/regulator box; 400g (0.88 lb) for a 0.5kW/28V regulator box.
  • Dimensions: Length - 213 mm (8.38 in), Width - 330 mm (12.99 in).
  • Speed Range: 1800-6500 RPM.
  • Type: Two-cylinder, two-stroke (opposed).
  • Displacement: 183 cm3 (11.5 cu in).
  • Stroke: 40 mm (1.57 in).
  • Bore: 54 mm (2.13 in).
  • Max Performance: 11 kW (15 HP) at 6500 RPM.
  • Control: Integrated Throttle servo (Fa. Volz).
  • Mixture Formation: Fuel injection.
  • Ignition System: CDI controlled by the ECU.
  • Cooling: Air-cooled.
  • Fuel Mixture: 1:80 with 2-stroke-oil API TC or BLUEMAX, MOGAS or AVGAS fuel with a minimum of 95 octane (RON).
Features: The engine includes automatic altitude and temperature compensation for reliable operation across a wide range of conditions. It is based on the proven S1211 and S1212 engines.
Options:
  • Reduction drive ratios: 1:1.4, 1:1.7, 1:2.0.
  • Two exhaust styles.
  • Up to 1kW starter/generator.
  • Oil injection.
  • Customization options available (e.g., quality documentation, design, rotation direction).
Limitations: This engine is not certified for aircraft use and has not undergone safety and durability testing as per aircraft standards. It is intended for uncertificated experimental aircraft or vehicles where engine failure does not pose a safety risk. Users assume all risks associated with its use.
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Catalog excerpts

42 Series-1

42 Series 2-Stroke Air Cooled State-of-the-art engine technology Best performance for Unmanned Aerial Vehicles (UAV) Ultimate control in extreme conditions Perfectly matched with endurance. The 42 Series air cooled two-stroke engines utilise advanced closed-loop control, optimising performance for extreme environmental conditions. Based on the well-known S1211 and S1212 engines – which have been proven in theatre – the new 42 Series have been updated with the latest in engine technology providing a top shelf propulsion system that meets the demanding requirements of the unmanned aerial vehicle (UAV) market. This engine series features automatic altitude and temperature compensation allowing reliable start and operation in a wide operating range.

 Open the catalog to page 1
42 Series-2

TECHNICAL SPECIFICATION: TYPE: Two cylinder two stroke (opposed) WEIGHT: 5700g (12.5 lb) with exhaust system, sensors and wirring harness 600g (1.33 lb) subcomponents (ECU, ignition system, fuel supply) WEIGHT REDUCTION 1200g (2.65 lb) (option) DRIVE: CONTROL: Integrated Throttle servo (Fa. Volz) MIXTURE FORMATION: Fuel injecton (see seperate data sheet) IGNITION SYSTEM: CDI controlled by the ECU COOLING: Air cooled 2-stroke-oil API TC or BLUEMAX, MOGAS o. AVGAS fuel min. 95 octane (RON) RUNNING Clockwise, view to output shaft SPEED RANGE: 1800-6500 RPM OPTIONS — Reduction...

 Open the catalog to page 2

All HIRTH ENGINES GMBH catalogs and technical brochures

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  7. 32 Series

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.