Hirth 41 Series

The 41 Series air cooled two-stroke engines utilise advanced closed-loop control, optimising performance for extreme environmental conditions.

Based on the world-renowned 4103 engine – which has flown more than 20,000 missions in theatre across the globe – the new 41 Series has 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.

• 2-Stroke
• Air Cooled
• Exceptional reliability
• Latest unmanned aerial vehicle (UAV) technology
• Maximum performance in extreme conditions

TECHNICAL DATA

TYPE:

Two cylinder two stroke (opposed)

DISPLACEMENT:

100 cm3 (6.3 cu in)

STROKE:

34 mm (1.34 in)

BORE:

44mm (1.73 in)

MAX. PERFORMANCE:

6 kW (8.1 HP) at 6700 rpm
According to DIN 70020

CONTROL:

Disc valve

MIXTURE FORMATION:

Fuel injecton

IGNITION SYSTEM:

CDI controlled by the ECU

COOLING:

Air cooled

WEIGHT:

3400g (7.5 lb) with exhaust sytem,
sensors and wirring harness
600g (1.33 lb) Subcomponents
(ECU, ignition system, fuel supply,..)

LENGTH:

259 mm (10.20 in)

WIDTH:

286 mm (11.25 in)

HEIGHT:

308 mm (12.12 in)

RUNNING DIRECTION:

Clockwise, view to output shaft

SPEED RANGE:

1800-6500 rpm

FUEL MIXTURE :

Mixture 1:80
2-stroke-oil API TC or BLUEMAX
MOGAS o. AVGAS fuel min.
95 octane (RON)