Searchable Light Aviation Database

Hirth 3701 ES/VS

Specifications:

Power: 100 hp / 6000 rpm
Torque: 120 Nm / 5500 rpm
Displacement: 939 cc
Weight: 99 lbs (45 kg)
Cycles: Two cycle
Cylinders configuration: 3 inline
Fuel: Gasoline
Cooling: Liquid
Propeller drive: Mechanical redrive
Hirth 3701 ES/VS

3701 ES/VS`s description

The 3701 ES/VS is a liquid cooled, reed valve controlled 3-cylinder-inline-2-stroke engine with electronic injection or carburettors and Nikasil coated cylinders.
It has one of the highest power to weight ratios available on the 100 HP engine market. Ideally suited for Ultralights, hovercrafts, gyrocopters, light experimental aircrafts and all applications where weight is an issue.

Description from the website http://www.hirth-motoren.de/en/engine-3701.html on 2014-05-18.

Another engines from Hirth:

2702 V

Weight: 68 lbs (31 kg)
Power: 40 hp
Torque: 57 Nm
Displacement: 521 cc
Hirth 2702 V

2703 V

Weight: 68 lbs (31 kg)
Power: 55 hp
Torque: 67 Nm
Displacement: 521 cc
Hirth 2703 V

3002 E/V

Weight: 93 lbs (42 kg)
Power: 83 hp
Torque: 110 Nm
Displacement: 1042 cc
Hirth 3002 E/V

3502 E/V

Weight: 79 lbs (36 kg)
Power: 60 hp
Torque: 84 Nm
Displacement: 625 cc
Hirth 3502 E/V

F33 A/AS

Weight: 29 lbs (13 kg)
Power: 25 hp
Torque: 31 Nm
Displacement: 313 cc
Hirth F33 A/AS

F36

Weight: 20 lbs (9.4 kg)
Power: 15 hp
Torque: 18 Nm
Displacement: 208 cc
Hirth F36

Comparable engines:

Victor 2

Weight: 115 lbs (52 kg)
Power: 92 hp
Torque: 104 Nm
Displacement: 724 cc
Simonini Racing Victor 2