The LF39 produces 125 hp (93 kW) and has a dry weight of 74 kg (163 lb).
[4] Just like its smaller sibling, the LF26, this direct-drive aero-engine has a side-valve (flathead) valvetrain.
The engine has port injection, a dry sump lubrication system, and dual ignition.
[6] In September 2014, EDM Aerotec announced the results of test flying the engine in their EDM Aerotec CoAX 2D/2R coaxial rotor helicopter, saying, "We are glad to present the 6 cylinder in action.
After more than 100 hours testflying ... the coax helicopter equipped with the 6 cylinder... (proved) a perfect combination according to the test pilots."