Products / Hirth Engines / 33 Series

hirth engines logo.webp

Cutting-Edge Two-Stroke Gasoline & Heavy Fuel Engines for Unmanned Aerial Vehicles

Hirth Engines / 33 Series

33 Series

Air-cooled 30HP two-stroke engines for smaller UAV platforms

Socials
33 Series

Weighing just 12.7kg with 30HP of output power, the air-cooled 33 Series is an excellent choice for smaller UAV platforms, offering industry-leading power-to-weight ratio for its class

It can be optionally equipped with dual ignition, belt reduction options, and an electric starter, and can also be configured to provide 50W of generator power.

Specifications:

Dimensions (L x W x H): 299.5 x 380 x 300 mm (11.79 x 14.96 x 11.81”)
Weight: 12.7 kg (28 lb)
Displacement: 312 cm3 (19.1 cu in)
Stroke: 69 mm (2.72 in)
Bore: 76 mm (2.99 in)
Max Performance: 18.1 kW (24.6 HP) at 6200 rpm (B)
According to DIN 70020
20.6 kW (28 HP) at 6500 rpm (BS)
Max Torque: 29.3 Nm (21.6 ft.lb) at 5000 rpm (B)
32.3 Nm (23.8 ft.lb) at 5800 rpm (BS)

Other Products

Gasoline & heavy fuel air-cooled 15HP UAV engines with automatic altitude & temperature compensation
Air-cooled 8.1HP two-stroke engines with automatic altitude & temperature compensation
Gasoline or heavy fuel liquid-cooled UAV engines with 70HP output
Air-cooled 65HP two-stroke UAV engines with leading power-to-weight ratio
Air-cooled 50HP two-stroke engines for UAVs of up to 120 kg