Fiala, the manufacturers of the engines, are a company that caters to the military; hence this is military grade equipment under constant development, it is and always will the most advanced engine manufacturer on the market.
At the moment we carry over 15 different models of Fiala engines.
Fiala 140cc opposed twin cylinder gas 4stroke engine with electronic ignition
Displacement: 140 cc
Bore: 47 mm
Stroke: 40 mm
Width including valve covers: 320 mm
Length from engine mount to prop hub: 184 mm
Engine weight, including ignition: 4670 g
Ignition voltage range: 4,8 - 9 V
Fiala is the only 4-stroke company in the world which produces both the engines and the propellers developed and designed to be used with them. They go hand in hand.
The Fiala propellers have quickly become a staple in the global UAV industry as no other propeller matches their efficiency.
Hence it is important to run the Fiala propellers with the Fiala engines should you want to run the diameters and pitches shown in the Fiala manual. These specifications are based only, and I cannot stress that enough, on their purpose designed and built Fiala propellers.
Other brands run the risk of over torquing and stressing the engine unnecessarily, limiting performance and service life.
Recommended props:
30 x 14 Fiala 2 blade
32 x 12 Fiala 2 blade
31 x 14 Fiala 2 blade
28 x 14 Fiala 3 blade
30 x 12 Fiala 3 blade
Volume 140 ccm
Bore 47 mm
Stroke 40 mm
Weight 4.01 kg
2-blade propeller 30/14, 32/12, 32/14, 34x12
3-blade propeller 28/14, 30/12
RPM Range 1000 - 6200
