Motor 3701

 Engine: 3701 ES/VS


Type: in-line engine

Cylinders: 3

Displacement: 939 cm³

Max. performance:74 kW (100 HP)

Max. torque:120 Nm

Cooling: water cooling

Weight: 45 kg (with muffler, add-on parts and water in the engine)

Starting device: electric starter included

Options: dual ignition, manifold injection instead of slide carburetters, separate lubrication, gear box G40 with or without centrifugal clutch, gear box G50 with or without centrifugal clutch (only 1:2,16, 1:2,29 and 1:2,59)

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.
Factory recommended TBO is rated at 1000 hours at 75 % power. The warranty of the crankshaft is 3 years.

Since 2003:

new UAV-engine 4201